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1.
Nutrition ; 103-104: 111791, 2022.
Article in English | MEDLINE | ID: mdl-35986981

ABSTRACT

Creatine supplementation has been shown to increase measures of lean body mass (LBM); however, there often is high heterogeneity across individual studies. Therefore, the aim of this study was to systematically review and meta-analyze randomized controlled trials (RCTs) investigating creatine supplementation on LBM. Subanalyses were performed based on age, sex, and type of exercise. Based on PRISMA guidelines, we searched the following databases: Pubmed, SPORTDiscus, Web of Science, and Scopus (PROSPERO register: CRD42020207122) until May 2022. RCTs for investigation of creatine supplementation on LBM were included. Animal studies and studies on individuals with specific diseases were excluded. Thirty-five studies were included, with 1192 participants. Overall (i.e., inclusion of all studies with and without exercise training interventions) revealed that creatine increased LBM by 0.68 kg (95% confidence interval [CI], 0.26-1.11). Subanalyses revealed greater gains in LBM when creatine was combined with resistance training (mean difference [MD], 1.10 kg; 95% CI, 0.56-1.65), regardless of age. There was no statistically significant effect of creatine on LBM when combined with mixed exercise (MD, 0.74 kg; 95% CI, -3.89 to 5.36) or without exercise (MD, 0.03 kg; 95% CI, -0.65 to 0.70). Further subanalyses found that males on creatine increased LBM by 1.46 kg (95% CI, 0.47-2.46), compared with a non-significant increase of 0.29 kg (95% CI, -0.43 to 1.01) for females. In conclusion, the addition of creatine supplementation to a resistance training program increases LBM. During a resistance training program, males on creatine respond more favorably than females.


Subject(s)
Body Composition , Creatine , Male , Female , Animals , Creatine/pharmacology , Randomized Controlled Trials as Topic , Exercise , Dietary Supplements , Muscle Strength
2.
Med. UIS ; 34(2): 49-60, mayo-ago. 2021. tab, graf
Article in Spanish | LILACS | ID: biblio-1375819

ABSTRACT

RESUMEN La preeclampsia es una importante causa de mortalidad materna mundial, identificar de manera temprana las gestantes con riesgo de desarrollarla, es una medida preventiva de gran impacto. La medición del agua corporal se ha documentado desde 1994, y desde 2015 se demostró su relación con el riesgo de desarrollar preeclampsia. Por lo anterior se realizó una revisión de la relación del agua corporal y la preeclampsia hasta junio de 2019, con 17 artículos seleccionados. Producto de la revisión se concluyó que la medición del agua corporal en gestantes podría detectar la aparición de preeclampsia para establecer un seguimiento estricto temprano a las mujeres con mayor riesgo de presentarla. Estas mediciones se realizan con métodos sencillos, no invasivos y de bajo costo, como la impedancia eléctrica por análisis espectral. Sin embargo, se requieren estudios con mayor rigor metodológico para el estudio de una prueba diagnóstica como la que se propone. MÉD.UIS.2021;34(2): 49-60.


ABSTRACT Preeclampsia is an important cause of maternal mortality worldwide. Early identification of pregnant women at risk of developing it is a preventive measure of great impact. Body water measurement has been documented since 1994, and since 2015 it was stablished its relationship with risk of developing preeclampsia. Therefore, a review of the relationship between body water and preeclampsia was carried out until June 2019, with 17 papers selected. As a result of the review, it was concluded that the measurement of body water in pregnant women could detect the appearance of preeclampsia to establish a strict early follow-up of women with a higher risk of presenting it. These measurements are made with simple, non-invasive and low-cost procedure, such as electrical impedance by spectral analysis. However, studies with greater methodological rigor are required for the study of a diagnostic test such as the one proposed. MÉD.UIS.2021;34(2): 49-60.


Subject(s)
Humans , Female , Pregnancy , Maternal Mortality , Pre-Eclampsia , Body Water , Pregnancy , Indicators of Morbidity and Mortality , Electric Impedance , Extracellular Fluid , Forecasting
3.
J Int Soc Sports Nutr ; 18(1): 7, 2021 Jan 09.
Article in English | MEDLINE | ID: mdl-33422070

ABSTRACT

BACKGROUND: Bioelectrical impedance vector analysis (BIVA) is able to identify differences in hydration status and body composition components, such as body cell mass (BCM) by means of plotting individuals in ellipses, when comparing groups with different characteristics. OBJECTIVE: Compare the confidence and tolerance ellipses of BIVA in individual and team sports athletes with a non-athlete reference population. DESIGN AND PARTICIPANTS: One hundred sixty-seven college athletes (team sports: 117 athletes, individual sports: 50 athletes) aged between 18 and 35 years. Bioelectrical impedance was used to measure resistance (R) and reactance (Xc) values that were used in the BIVA analysis to identify hydration status and BCM, respectively. Hotelling's t-test was used to identify differences between groups in the confidence ellipses and the comparison was made with a non-athlete Italian reference population. RESULTS: There were no differences between male team sports and individual athletes (p = 0.151) and for female athletes (p = 0.624). Most athletes were located in the 50% tolerance ellipses, indicating adequate hydration. Compared to the Italian a non-athlete population, athletes of both sexes presented left impedance vector deviation in the minor axis (Xc) of the tolerance ellipses, indicating higher BCM. CONCLUSION: There were no differences in BIVA between team and individual sports athletes, but most athletes presented an adequate hydration state and, compared to a non-athlete population, the athletes of the present study presented higher BCM.


Subject(s)
Athletes , Body Composition/physiology , Electric Impedance/therapeutic use , Organism Hydration Status/physiology , Sports/physiology , Adult , Cell Count/methods , Cross-Sectional Studies , Female , Humans , Male , Sex Factors , Sports/statistics & numerical data , Students , Team Sports , Universities , Young Adult
4.
Cuad. Hosp. Clín ; 61(2): 33-46, dic. 2020. ilus.
Article in Spanish | LILACS, LIBOCS | ID: biblio-1179186

ABSTRACT

PREGUNTA DE INVESTIGACIÓN: ¿Cuál será la composición corporal, el agua corporal total, y el agua extra e intracelular relacionados a los cambios después del ejercicio submáximo de 30 minutos y post rehidratación con agua pura en adultos residentes permanentes de gran altitud, La Paz, Bolivia, gestión 2019? OBJETIVO: Determinar la composición corporal, el agua corporal total, y el agua extra e intracelular relacionados a los cambios después del ejercicio submáximo de 30 minutos y post rehidratación con agua pura en adultos residentes permanentes de gran altitud, La Paz, Bolivia, gestión 2019. MATERIAL Y MÉTODOS: el trabajo de investigación fue tipo experimental, antes y después, sobre Fisiología de Altitud, en 29 jóvenes residentes de gran altitud (3600 m.s.n.m.). Se evaluó variables antes y después de realizar una prueba de ejercicio submáxima, de 30 minutos, y la rehidratación post ejercicio, tras el consumo de agua pura. Variables dependientes fueron: 1. Composición corporal, medida a través del análisis de impedancia bioeléctrica (AIB), 2. Volumen de agua corporal total, determinado por AIB. 3. Agua extra e intracelular evaluada por AIB y 4. Estado de rehidratación, evaluado por el cambio de peso post ejercicio, y mediante el AIB. Las variables independientes fueron el ejercicio a través de la prueba submáxima de 30 minutos y la rehidratación con agua pura. RESULTADOS: en jóvenes residentes de gran altitud, se estima que el porcentaje de agua corporal total en las mujeres está disminuida en relación a la referencia de poblaciones del nivel del mar. La masa grasa corporal está muy incrementada en las mujeres. La diferencia de agua basal versus el agua post ejercicio entre varones y mujeres no es significativa. La diferencia de agua del líquido extra e intracelular basal versus el agua post ejercicio entre varones y mujeres no es significativa. La diferencia en la distancia recorrida en 30 minutos de ejercicio de trote submáximo es estadísticamente significativa a favor de los varones (4424 vs. 3619 metros). La correlación del IMC y el porcentaje de masa grasa es muy baja (r=0.109). El IMC entre varones y mujeres no presenta diferencia estadísticamente significativa (26±3 vs 24±3 respectivamente). La frecuencia de exceso de grasa corporal evaluada por AIB, es del 55% en las mujeres y de 0% en varones. La presión arterial sistémica en varones (PS: 107±6 y PD:73± 4mmHg) y en mujeres (PS:104±8 y PD:70± 7mmHg), está disminuida en relación a referencia del nivel del mar. La frecuencia respiratoria esta incrementada tanto en varones (21±2) y mujeres (23±3). CONCLUSIONES: el método de AIB permite evaluar la composición corporal y el agua corporal total y por tanto la masa grasa, mismo que fue validado en altitud por el método estándar de referencia de dilución isotópica en estudios previos en altitud. El ejercicio de trote submáximo ejecutado, ha exigido más a los universitarios estudiados. Se verifica que en el mismo tiempo los varones han recorrido una mayor distancia que las mujeres. Se estima que en mujeres la masa grasa corporal (MGC) esta incrementada y que el exceso de grasa (obesidad) es del 55%. La diferencia del agua al momento basal y post ejercicio y el LEC y LIC entre varones y mujeres no es significativa. El IMC subestima en este grupo la frecuencia de obesidad, principalmente en mujeres. El uso de técnicas nucleares, ha permitido a través del análisis del deuterio estudiar el agua, la composición corporal, y se asocia fuertemente con determinaciones similares mediante el uso de la bioimpedancia eléctrica.


RESEARCH QUESTION: what will be the body composition, the total body water, and the extra and intracellular water related to the changes after submaximal exercise of 30 minutes and post rehydration with pure water in permanent resident adults of high altitude, La Paz, Bolivia, management 2019? OBJECTIVE: to determine the body composition, the total body water, and the extra and intracellular water related to the changes after submaximal exercise of 30 minutes and post rehydration with pure water in permanent residents of high altitude adults, La Paz, Bolivia, management 2019. MATERIAL AND METHODS: the research work was experimental, before and after, on Altitude Physiology, in 29 young residents of high altitude (3600 m.a.s.l.). Variables were evaluated before and after performing a 30-minute submaximal exercise test and post-exercise rehydration after consuming pure water. Dependent variables were: 1. Body composition, measured through bioelectrical impedance analysis (AIB), 2. Total body water volume, determined by AIB. 3. Extra and intracellular water evaluated by AIB and 4. Rehydration status, evaluated by post-exercise weight change, and by AIB. The independent variables were exercise through the 30-minute submaximal test and rehydration with pure water. RESULTS: in young residents of high altitude, it is estimated that the percentage of total body water in women is decreased in relation to the reference of sea level populations. Body fat mass is greatly increased in women. The difference in basal water versus post-exercise water between men and women is not significant. The difference in water from basal extra and intracellular fluid versus post-exercise water between men and women is not significant. The difference in distance covered in 30 minutes of submaximal jogging exercise is statistically significant in favor of men (4424 vs. 3619 meters). The correlation of BMI and the percentage of fat mass is very low (r = 0.109). The BMI between men and women did not present a statistically significant difference (26 ± 3 vs 24 ± 3 respectively). The frequency of excess body fat evaluated by AIB is 55% in women and 0% in men. The systemic blood pressure in men (PS: 107 ± 6 and PD: 73 ± 4mmHg) and in women (PS: 104 ± 8 and PD: 70 ± 7mmHg), is decreased in relation to the sea level reference. Respiratory rate is increased in both men (21 ± 2) and women (23 ± 3). CONCLUSIONS: the AIB method allows evaluating body composition and total body water and therefore fat mass, which was validated at altitude by the isotopic dilution reference standard method in previous studies at altitude. The submaximal trot exercise performed has demanded more from the university students studied. It is verified that in the same time the men have traveled a greater distance than the women. It is estimated that in women the body fat mass (FGM) is increased and that the excess fat (obesity) is 55%. The difference in water at baseline and post-exercise and the LEC and LIC between men and women is not significant. The BMI underestimates the frequency of obesity in this group, mainly in women. The use of nuclear techniques has allowed the analysis of deuterium to study water, body composition, and is strongly associated with similar determinations through the use of electrical bioimpedance.


Subject(s)
Humans , Body Water , Water Quantity , Drinking , Altitude , Students , Universities , Exercise , Respiratory Rate
5.
Med. UIS ; 33(2): 85-93, mayo-ago. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1346449

ABSTRACT

Resumen La hiponatremia es el trastorno hidroelectrolítico más frecuente observado en pacientes hospitalizados y es importante resaltar que se ha asociado a morbilidad y mortalidad de estos. Esta entidad representa un proceso fisiopatológico relacionado con una alteración en la homeostasis del agua, en la cual los pacientes presentan síntomas en su mayoría neurológicos, que se correlacionan con el nivel de sodio y el tiempo de aparición del trastorno. Se realizó una búsqueda en las bases de datos PubMed y Lilacs de monografías, artículos de revisión y artículos originales con el objetivo de revisar aspectos sobre la clínica, diagnóstico y manejo de la entidad. Para el diagnóstico, la batería de estudios se solicita en función del contexto clínico, actuando temprano y permitiendo la corrección del trastorno de acuerdo al escenario respectivo. La hiponatremia es un problema médico frecuente que bajo un abordaje práctico y sencillo permite tomar decisiones clínicas de forma oportuna. MÉD.UIS. 2020;33(2):85-93.


Abstract Hyponatremia is the most frequent hydroelectrolytic disorder observed in hospitalized patients and it is important to note that it has been associated with morbidity and mortality in this patients. This entity represents a pathophysiological process related to an alteration in water homeostasis, in which patients present symptoms mostly neurological, that correlate with the sodium level and the time of onset of the disorder. A search of the PubMed and Lilacs databases of monographies, review articles and originals articles was performed with the objective to review clinical, diagnostic and management aspects of this entity. For diagnosis, the clinical laboratory studies are requested depending on the clinical context, acting early and allowing correction of the disorder according to the respective scenario. Hyponatremia is a frequent medical problem that requires a practical and simple approach favoring clinical decisions in a timely manner. MÉD.UIS. 2020;33(2):85-93.


Subject(s)
Humans , Sodium , Electrolytes , Hyponatremia , Body Water , Saline Solution
6.
Braz J Cardiovasc Surg ; 35(2): 169-174, 2020 04 01.
Article in English | MEDLINE | ID: mdl-32369296

ABSTRACT

OBJECTIVE: To analyze the dual interference between cardiac implantable electronic devices (CIEDs) and bioelectrical impedance analysis (BIA). METHODS: Forty-three individuals admitted for CIEDs implantation were submitted to a tetrapolar BIA with an alternating current at 800 microA and 50 kHz frequency before and after the devices' implantation. During BIA assessment, continuous telemetry was maintained between the device programmer and the CIEDs in order to look for evidence of possible electric interference in the intracavitary signal of the device. RESULTS: BIA in patients with CIEDs was safe and not associated with any device malfunction or electrical interference in the intracardiac electrogram of any electrode. After the implantation of the devices, there were significant reductions in BIA measurements of resistance, reactance, and measurements adjusted for height resistance and reactance, reflecting an increase (+ 1 kg; P<0.05) in results of total body water and extracellular water in liter and, consequently, increases in fat-free mass (FFM) and extracellular mass in kg. Because of changes in the hydration status and FFM values, without changes in weight, fat mass was significantly lower (-1.2 kg; P<0.05). CONCLUSION: BIA assessment in patients with CIEDs was safe and not associated with any device malfunction. The differences in BIA parameters might have occurred because of modifications on the patients' body composition, associated to their hydration status, and not to the CIEDs.


Subject(s)
Body Composition , Heart , Aged , Body Weight , Electric Impedance , Female , Humans , Male , Middle Aged
7.
Braz J Cardiovasc Surg ; 35(1): 16-21, 2020 02 01.
Article in English | MEDLINE | ID: mdl-32270955

ABSTRACT

OBJECTIVE: To evaluate preoperative and postoperative body fluid distribution with a bioelectrical impedance analyzer in patients undergoing cardiopulmonary bypass. METHODS: Fifteen adult patients undergoing cardiopulmonary bypass were included in this study. Total body fluid changes, basal metabolism rates, body fat masses, lean body masses, and total cell masses were recorded. The patients' values were measured before anesthesia, after anesthesia, after sternotomy, at the 5th, 30th, and 60th minutes of cardiopulmonary bypass, and on the 1st, 3rd, and 5th postoperative days. All values were compared with preoperative values. RESULTS: Total body fluid changed significantly after cardiopulmonary bypass (P<0.01). Metabolic velocity significantly changed compared to preoperative measurements (P<0.05). Fat mass and lean body mass also changed significantly. Body mass index and phase angle did not change significantly (P>0.05). CONCLUSION: Changes in body fluids during and after cardiopulmonary bypass are inevitable. The increase in total body weight shows that this fluid load shifts to the extracellular space during bypass and the fluid load in this area passes into the intravascular area in the early postoperative period. This may cause edema and dysfunction in the major organs. Therefore, the fluid balance should be adjusted very carefully, especially during the bypass phase and the early postoperative period.


Subject(s)
Body Composition , Cardiopulmonary Bypass , Body Weight , Electric Impedance , Female , Humans , Male , Middle Aged , Postoperative Period
8.
Rev. méd. hered ; 31(2): 85-94, abr.-jun 2020. tab, graf
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1144821

ABSTRACT

Resumen Objetivo: Estudiar los cambios en el agua corporal, grasa y masa magra de personas sanas y enfermas (20-80 años) categorizadas según tasa de filtración glomerular (TFG). Material y métodos: Estudio descriptivo y analítico de 198 sujetos (sanos, con enfermedades crónicas sin azoemia y con diferentes estados de enfermedad renal crónica normalizados por sexo) según categorías: Categoría 1 (TFG >140 ml/min/1,73 m2SC); Categoría 2 (TFG 90-140); Categoría 3 (TFG 60-89); Categoría 4 (TFG 30-59); Categoría 5 (TFG<30) y Categoría 6 (diálisis). Se midió peso, talla, agua corporal, grasa y masa magra con balanza de bioimpedancia; aclaramiento de creatinina (TFG), aclaramiento de urea y sodio y potasio en orina de 24 horas. Con estos datos se calculó la masa corporal, agua corporal, grasa y masa magra, la ingesta de sal sódica, potasio y proteínas. Se relacionaron las diversas variables según categorías propuestas con ANOVA y eta cuadrado. Se correlacionó con la TFG y la masa magra mediante regresión bivariada y el resto de variables mediante regresión múltiple lineal, para definir las relevantes. Resultados: Las variables relevantes asociadas con pérdida de TFG fueron la masa magra y el agua corporal: ANOVA (p=0,000 ambas) y eta cuadrado (0,178 y 0,165), respectivamente. El análisis multivariado solo relacionó la TFG con la edad (r=-0,34; p=0,000) y la masa magra mostró correlación bivariada relevante con el agua (r=0,861; p=0,000). Conclusión: La pérdida de TFG implica fundamentalmente pérdida de masa magra y agua corporal en la estructura corporal.


SUMMARY Objective : Study changes in body water, fat and lean mass of healthy and sick people (20-80 years) categorized according to glomerular filtration rate (GFR). Material and Methods: Descriptive and analytical study of 198 subjects (healthy, with chronic disease without azotemia and with different stages of chronic kidney disease standardized by sex) according to stages: Stage 1 (GFR> 140 ml / min / 1.73 m2SC); Stage 2 (TFG 90-140); Stage 3 (TFG 60-89); Stage 4 (TFG 30-59); Stage 5 (TFG <30) and Stage 6 (dialysis). We measured weight, height, body water, fat and lean (with bio impedance scales); creatinine clearance (GFR) and urea clearance. In 24-hour urine: sodium and potassium. With these data, body mass, body water, fat and lean mass, sodium salt intake, potassium and proteins were calculated. The analysis was descriptive and analytical, relating the various variables according to the proposed categories with ANOVA and eta squared. The rest of the variables were correlated with the TFG and lean mass by bivariate regression and linear multiple regression to define the relevant ones. Results: The relevant variables associated with loss of GFR were lean body mass and water: ANOVA (p = 0.000 both) and eta squared (0.178 and 0,165) respectively. The multivariate analysis only related the GFR with age (r = -0.34, p = 0.000) and the lean mass showed significant bivariate correlation with water (r = 0.861, p = 0.000). Conclusion: The loss of TFG mainly involves loss of lean body mass and water in the body structure.

9.
Rev. bras. cir. cardiovasc ; Rev. bras. cir. cardiovasc;35(1): 16-21, Jan.-Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1092470

ABSTRACT

Abstract Objective: To evaluate preoperative and postoperative body fluid distribution with a bioelectrical impedance analyzer in patients undergoing cardiopulmonary bypass. Methods: Fifteen adult patients undergoing cardiopulmonary bypass were included in this study. Total body fluid changes, basal metabolism rates, body fat masses, lean body masses, and total cell masses were recorded. The patients' values were measured before anesthesia, after anesthesia, after sternotomy, at the 5th, 30th, and 60th minutes of cardiopulmonary bypass, and on the 1st, 3rd, and 5th postoperative days. All values were compared with preoperative values. Results: Total body fluid changed significantly after cardiopulmonary bypass (P<0.01). Metabolic velocity significantly changed compared to preoperative measurements (P<0.05). Fat mass and lean body mass also changed significantly. Body mass index and phase angle did not change significantly (P>0.05). Conclusion: Changes in body fluids during and after cardiopulmonary bypass are inevitable. The increase in total body weight shows that this fluid load shifts to the extracellular space during bypass and the fluid load in this area passes into the intravascular area in the early postoperative period. This may cause edema and dysfunction in the major organs. Therefore, the fluid balance should be adjusted very carefully, especially during the bypass phase and the early postoperative period.


Subject(s)
Humans , Male , Female , Middle Aged , Body Composition , Cardiopulmonary Bypass , Postoperative Period , Body Weight , Electric Impedance
10.
J. Anim. Behav. Biometeorol ; 8(1): 17-24, Jan. 2020. tab
Article in English | VETINDEX | ID: biblio-1484291

ABSTRACT

The objective of this study is studying the effect of genetic crossing on body water and body solids in growing calves under winter or summer season in Egypt. Twenty calves including 10 native calves and 10 F1 calves (♀ Egyptian cow × ♂ Holstein) were used through two experiments. The first experiment was conducted during winter season on ten calves including 5 native and 5 F1 calves with average 5-6 months of age. The second experiment was conducted during summer season on another ten calves with the same age and body weight including 5 native calves and 5 F1 calves. Results showed that summer season induced significant decreases in live body weight (LBW) by 27.2 kg in native and by 32.9 kg in F1 through 3 months and F1 calves were better than native calves by 23.2 kg and 17.5 kg under winter and summer seasons, respectively. Total body water (TBW) as percentage of LBW values increased significantly and total body solids (TBS) as absolute values through three months decreased significantly by 6.9 kg in native calves and by 9.0 kg in F1 calves due to exposure calves to summer season. Daily gain (BG) and daily solids gain (SG) decreased significantly due to exposure calves to summer season and F1 calves were better than native calves in live BG as well as in SG. The best values in gain were in F1 calves under winter condition and the worsted values were in native calves under summer season.


Subject(s)
Animals , Cattle , Body Composition , Heat Stress Disorders/veterinary , Body Water
11.
J. Anim. Behav. Biometeorol. ; 8(1): 17-24, Jan. 2020. tab
Article in English | VETINDEX | ID: vti-25818

ABSTRACT

The objective of this study is studying the effect of genetic crossing on body water and body solids in growing calves under winter or summer season in Egypt. Twenty calves including 10 native calves and 10 F1 calves (♀ Egyptian cow × ♂ Holstein) were used through two experiments. The first experiment was conducted during winter season on ten calves including 5 native and 5 F1 calves with average 5-6 months of age. The second experiment was conducted during summer season on another ten calves with the same age and body weight including 5 native calves and 5 F1 calves. Results showed that summer season induced significant decreases in live body weight (LBW) by 27.2 kg in native and by 32.9 kg in F1 through 3 months and F1 calves were better than native calves by 23.2 kg and 17.5 kg under winter and summer seasons, respectively. Total body water (TBW) as percentage of LBW values increased significantly and total body solids (TBS) as absolute values through three months decreased significantly by 6.9 kg in native calves and by 9.0 kg in F1 calves due to exposure calves to summer season. Daily gain (BG) and daily solids gain (SG) decreased significantly due to exposure calves to summer season and F1 calves were better than native calves in live BG as well as in SG. The best values in gain were in F1 calves under winter condition and the worsted values were in native calves under summer season.(AU)


Subject(s)
Animals , Cattle , Body Water , Body Composition , Heat Stress Disorders/veterinary
12.
Rev. bras. cir. cardiovasc ; Rev. bras. cir. cardiovasc;35(2): 169-174, 2020. tab
Article in English | LILACS | ID: biblio-1101473

ABSTRACT

Abstract Objective: To analyze the dual interference between cardiac implantable electronic devices (CIEDs) and bioelectrical impedance analysis (BIA). Methods: Forty-three individuals admitted for CIEDs implantation were submitted to a tetrapolar BIA with an alternating current at 800 microA and 50 kHz frequency before and after the devices' implantation. During BIA assessment, continuous telemetry was maintained between the device programmer and the CIEDs in order to look for evidence of possible electric interference in the intracavitary signal of the device. Results: BIA in patients with CIEDs was safe and not associated with any device malfunction or electrical interference in the intracardiac electrogram of any electrode. After the implantation of the devices, there were significant reductions in BIA measurements of resistance, reactance, and measurements adjusted for height resistance and reactance, reflecting an increase (+ 1 kg; P<0.05) in results of total body water and extracellular water in liter and, consequently, increases in fat-free mass (FFM) and extracellular mass in kg. Because of changes in the hydration status and FFM values, without changes in weight, fat mass was significantly lower (-1.2 kg; P<0.05). Conclusion: BIA assessment in patients with CIEDs was safe and not associated with any device malfunction. The differences in BIA parameters might have occurred because of modifications on the patients' body composition, associated to their hydration status, and not to the CIEDs.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Body Composition , Heart , Body Weight , Electric Impedance
13.
Medisan ; 23(5)sept.-oct. 2019. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1091134

ABSTRACT

Introducción: El agua mantiene un rango normal en personas aparentemente sanas, el cual se altera ante la existencia de diversas enfermedades. Objetivo: Conocer cuánto se diferencian los valores de agua corporal total estimados por las ecuaciones de agua corporal total, de Kushner, de Deurenberg y de Heitman, con respecto a los obtenidos clínicamente por el método de impedancia bioeléctrica a 50 kHz. Métodos: Se realizó un estudio descriptivo y transversal, de abril a diciembre del 2018, en 62 individuos: 31 adultos aparentemente sanos y 31 niños y adolescentes con diferentes enfermedades, ingresados en el Hospital Infantil Docente Sur Dr. Antonio María Béguez César de Santiago de Cuba (24 en el Servicio de Misceláneas y 7 en el de Oncopediatría). El agua corporal total y los parámetros bioeléctricos se estimaron con el analizador de impedancia bioeléctrica Bodystat® 1500-MDD, a 50 kHz, por el método tetrapolar ipsilateral derecho. Se utilizó el criterio de Bland-Altman, para un 95 % de confianza, a fin de conocer si las ecuaciones de Kushner, de Deurenberg y de Heitman podían sustituir a la ecuación de referencia. Resultados: Las ecuaciones de agua corporal total, de Kushner y de Deurenberg no mostraron diferencias significativas respecto a la ecuación de referencia, mientras que la ecuación de Heitman sí presentó diferencias significativas en relación con el resto de las ecuaciones. El método de Bland-Altman demostró que la ecuación de Kushner posee mayor concordancia con la ecuación de referencia. Conclusiones: La ecuación de Kushner es la de mayor exactitud para la estimación del agua corporal total en personas sanas y en las afectadas por entidades clínicas.


Introduction: The water maintains a normal range in apparently healthy people, which changes with the existence of diverse diseases. Objective: To know how the values of total body water estimated by Kushner, Deurenberg and Heitman equations of total body water, differ regarding those obtained clinically by the method of bioelectric impedance at 50 kHz. Methods: A descriptive and cross-sectional study was carried out, from April to December, 2018, in 62 individuals: 31 apparently healthy adults and 31 children and adolescents with different diseases, admitted to "Dr. Antonio María Béguez César" Southern Teaching Children Hospital in Santiago de Cuba (24 in the Miscellaneous Service and 7 in Oncopediatrics Service). The total body water and the bioelectric parameters were considered with the analyzer of bioelectric impedance Bodystat® 1500-MDD, at 50 kHz, for the right ipsilateral tetrapolar method. The approach of Bland-Altman was used, for 95% of confidence in order to know if Kushner, Deurenberg and Heitman equations could substitute the reference equation. Results: Kushner and Deurenberg equations of total body water didn't show significant differences regarding the reference equation, while Heitman equation presented significant differences related to the rest of the equations. The Bland-Altman method demonstrated that the equation of Kushner has higher concordance with the reference equation. Conclusions: Kushner equation has the highest accuracy for the estimate of total body water in healthy people and in those affected by diseases.


Subject(s)
Body Water , Electric Impedance
14.
Rev. méd. hered ; 30(3): 139-147, jul.-sept. 2019. ilus, tab
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1144769

ABSTRACT

Objetivo: Determinar si hay diferencia entre la persona crónicamente enferma sin azoemia respecto al sano en: estructura corporal, función renal y hábitos alimentarios. Material y métodos: Conclusiones: Las enfermedades crónicas disminuyen tempranamente la función renal, la excreción urinaria de creatinina y limitan la ingesta de proteínas y potasio respecto al sano. Esto ocurre aun cuando la creatinina sérica está en límites normales.


Objective: To determine if there are differences between persons with chronic diseases with no renal insufficiency compared to health persons in body structure, renal function and dietary habits. Methods: Conclusions: chronic diseases reduce early the renal function, urinary excretion of creatinine and reduce daily intake of proteins and potassium compared to healthy people. These abnormalities do occur despite of normal serum creatinine levels.

15.
J. Anim. Behav. Biometeorol ; 7(2): 52-59, Apr. 2019. tab, graf
Article in English | VETINDEX | ID: biblio-1484266

ABSTRACT

The purpose of this study was to investigate the total water turnover rate of fasting subadult hooded seals in order to elucidate to what extent these animals rely in seawater drinking/mariposia at this life stage. Considering mariposia is important for later accurate estimations of food consumption using water turnover rate as a proxy. Five subadult hooded seals were kept fasting for 4 days in a seawater pool. Total body water (39.6 ± 2.5 % of total body mass) decreased by 3.1 ± 0.4 % of initial body water over the experimental period. Turnover rates were 16.7 ± 3.9 (influx) and 24.6 ± 4.6 (efflux) ml · dayˉ¹ · kgˉ¹ with a net water loss of 710 ± 51 ml · day-1. It was estimated that the seals drank approximately 947 ml of seawater per day, which corresponds to 61 % of total daily water influx. Initial body water was relatively low as a result of the high body fat (46.9 ± 3.2 % of initial body mass) shown in the animals. It is concluded that subadult fasting hooded seals drink significant amounts of seawater during fasting. Although mariposia stands out as the major source of free water in fasting hooded seals, the amount of seawater ingested is unlikely to provide a net gain of free water as it is provided by metabolic water. However, it may contribute to excrete the excess of urea produced during early phase I of fasting.


Subject(s)
Animals , Feeding Behavior , Seals, Earless/physiology , Drinking/physiology , Fasting , Body Water , Saline Waters , Homeostasis
16.
J. Anim. Behav. Biometeorol. ; 7(2): 52-59, Apr. 2019. tab, graf
Article in English | VETINDEX | ID: vti-19346

ABSTRACT

The purpose of this study was to investigate the total water turnover rate of fasting subadult hooded seals in order to elucidate to what extent these animals rely in seawater drinking/mariposia at this life stage. Considering mariposia is important for later accurate estimations of food consumption using water turnover rate as a proxy. Five subadult hooded seals were kept fasting for 4 days in a seawater pool. Total body water (39.6 ± 2.5 % of total body mass) decreased by 3.1 ± 0.4 % of initial body water over the experimental period. Turnover rates were 16.7 ± 3.9 (influx) and 24.6 ± 4.6 (efflux) ml · dayˉ¹ · kgˉ¹ with a net water loss of 710 ± 51 ml · day-1. It was estimated that the seals drank approximately 947 ml of seawater per day, which corresponds to 61 % of total daily water influx. Initial body water was relatively low as a result of the high body fat (46.9 ± 3.2 % of initial body mass) shown in the animals. It is concluded that subadult fasting hooded seals drink significant amounts of seawater during fasting. Although mariposia stands out as the major source of free water in fasting hooded seals, the amount of seawater ingested is unlikely to provide a net gain of free water as it is provided by metabolic water. However, it may contribute to excrete the excess of urea produced during early phase I of fasting.(AU)


Subject(s)
Animals , Seals, Earless/physiology , Saline Waters , Drinking/physiology , Body Water , Fasting , Feeding Behavior , Homeostasis
17.
Obes Surg ; 29(1): 183-189, 2019 01.
Article in English | MEDLINE | ID: mdl-30232726

ABSTRACT

INTRODUCTION: Bariatric surgery has a significant influence on body composition (BC), which should be monitored. However, there is a need to recommend low-cost practical methods, with good estimation of BC for class III obese and/or bariatric patients. OBJECTIVE: The aim of this study was to determine accuracy and agreement between BC assessed by direct segmental multifrequency bioelectrical impedance analysis (DSM-BIA) and doubly labeled water (DLW) as reference method. MATERIAL AND METHODS: Twenty class III obese women (age 29.3 ± 5.1 years; body mass index 44.8 ± 2.4 kg/m2) underwent Roux-en-Y gastric bypass surgery. BC (fat mass [FM], fat-free mass [FFM], and total body water [TBW]) was assessed by InBody 230 and DLW in the following periods: before and 6 and 12 months after surgery. Accuracy between the methods was evaluated by the bias and root mean square error. Pearson's correlation, concordance correlation coefficient (CCC), and Bland-Altman method were used to evaluate agreement between the methods. RESULTS: Correlations were significant (p < 0.001) and CCC was good/excellent between both methods for the evaluation of FM (r = 0.84-0.92, CCC = 0.84-0.95), FFM (r = 0.73-0.90, CCC = 0.68-0.80), and TBW (r = 0.76-0.91, CCC = 0.72-0.81) before and after bariatric surgery. In addition, no significant bias was observed between DSM-BIA and DLW for FM (mean error [ME] = - 1.40 to 0.06 kg), FFM (ME = 0.91-1.86 kg), and TBW (ME = 0.71-1.24 kg) measurements. CONCLUSION: The DSM-BIA was able to estimate the BC of class III obese women submitted to bariatric surgery with values consistent with those of the DLW method.


Subject(s)
Bariatric Surgery , Body Composition/physiology , Obesity/metabolism , Obesity/surgery , Water/metabolism , Adult , Bariatric Surgery/methods , Body Mass Index , Electric Impedance , Female , Gastric Bypass , Humans , Middle Aged , Obesity, Morbid/metabolism , Obesity, Morbid/surgery , Staining and Labeling , Water/analysis , Young Adult
18.
Audiol., Commun. res ; 24: e2236, 2019. tab, graf
Article in Portuguese | LILACS | ID: biblio-1100894

ABSTRACT

RESUMO Objetivos trata-se de revisão sistemática da literatura científica sobre a associação entre o acidente vascular cerebral, desidratação e disfagia orofaríngea. Estratégia de pesquisa o levantamento bibliográfico foi realizado nas bases de dados científicos: MEDLINE, LILACS, SciELO, Web of Science e Cochrane. Critérios de seleção foram incluídos os estudos que preencheram os seguintes critérios de inclusão: ser artigo original, com resumo disponível; ter sido publicado entre os anos de 2001 e 2018 e nos idiomas português, inglês ou espanhol; abordar o tema desidratação em indivíduos após acidente vascular cerebral. A triagem e análise dos estudos foram realizadas por dois avaliadores independentes. Resultados dentre os 484 artigos localizados para a triagem, 43 foram selecionados para leitura completa e 18 foram incluídos na análise final. Foram descritos diferentes métodos de avaliação do estado de hidratação nos indivíduos após acidente vascular cerebral, tais como: análise da relação BUN /creatinina, osmolaridade plasmática, relação ureia/creatinina, gravidade específica da urina, coloração da urina, ingestão hídrica, balanço hídrico, bioimpedância elétrica, avaliação clínica, análise de eletrólitos isolados. A prevalência de desidratação em pacientes após acidente vascular cerebral, durante a internação, variou de 11% a 66% e está associada à gravidade e piora na evolução clínica. Conclusão foi possível compreender a complexidade do processo de mensuração do estado de hidratação em indivíduos após acidente vascular cerebral e sua associação com a disfagia. Estudos enfocando essa temática são de extrema relevância, visto a sua influência sobre a taxa de mortalidade e morbidade nesta população.


ABSTRACT Purpose this is a systematic review of scientific literature associated with stroke, dehydration and oropharyngeal dysphagia (OD). Research Strategy bibliographic survey was conducted in scientific databases: MEDLINE, LILACS, SciELO, Web of Science and Cochrane. Selection criteria studies that met the following inclusion criteria were included: being original article with summary available; have been published in the last seventeen years (2001-2018) and in Portuguese, English or Spanish languages; and addressing dehydration in individuals after stroke Screening and analysis of the studies were performed by two independent evaluators. Results among the 484 articles found for screening, 43 were selected for full reading and 18 articles were included in the final analysis. Different methods of assessing hydration status have been described in individuals post-stroke, such as ratio analysis blood urea nitrogen (BUN)/creatinine, plasma osmolality, urea / creatinine, urine specific gravity, urine color, water intake, water balance, bioelectrical impedance analysis (BIA), clinical evaluation and analysis of electrolytes. The prevalence of dehydration in post-stroke during hospitalization varied from 11% to 66% and is associated with severity and deterioration in the clinical evolution. Conclusion It was possible to understand the complexity of the measurement of hydration status in individuals after stroke and its association with dysphagia. Studies focusing on the association between dehydration and stroke are very important, due to its influence on mortality and morbidity in this population.


Subject(s)
Humans , Deglutition Disorders/complications , Stroke/complications , Dehydration/complications , Deglutition Disorders/epidemiology , Prevalence , Dehydration/epidemiology , Organism Hydration Status
19.
Rev. bras. ciênc. mov ; 26(2): 5-11, abr.-jun. 2018.
Article in Portuguese | LILACS | ID: biblio-948309

ABSTRACT

A existência de mudanças cíclicas no peso corporal e no metabolismo de água e eletrólitos no ciclo menstrual é amplamente estudada na literatura, porém os resultados a este respeito mostram-se divergentes. Acredita-se que a progesterona seja a principal responsável pela retenção de líquidos e sódio, principalmente após a fase ovulatória, onde ocorre a maior concentração deste hormônio e, desta forma, a retenção de líquidos pode interferir na composição corporal. Para confirmar essa hipótese, sete mulheres saudáveis (22,71 ± 2,63 anos; 62,20 ± 7,62 kg; 161,57 ± 3,15 cm; 27,40 ± 3,58 %G), praticantes de treinamento resistido com peso, há no mínimo, dois meses e que não faziam uso de contraceptivos orais, foram avaliadas durante as fases do ciclo menstrual ­ fase folicular, entre o 3º e 5º dia; fase ovulatória, entre o 9º e 10º dia; e fase lútea, entre 17º e 21º dia ­ pelo método da impedância bioelétrica (Quantum BIA-II® - RJL Systems, Inc. Clinton: MI-EUA), no qual foram mensuradas as variáveis: água corporal total, água intracelular e água extracelular em litros; percentual de gordura; massa gorda e massa magra em kg. Para verificar a distribuição da amostra foi utilizado o teste de Shapiro Wilk e a homogeneidade através do teste de Levene. Foi adotado o teste ANOVA One Way, com o Post-Hoc de Bonferroni. Para comprovação estatística foi adotado o p ≤ 0,05. Não foram encontradas diferenças significativas entre as variáveis analisadas em cada fase do ciclo menstrual. Sendo assim, conclui-se que variações que ocorrem durante o CM não são capazes de influenciar morfologicamente a composição corporal de mulheres saudáveis e fisicamente ativas....(AU)


The existence of cyclical changes in body weight and in the metabolism of water and electrolytes in the course of the menstrual cycle is widely studied in the literature, but the results in this regard show themselves to be divergent. It is believed that progesterone is the main responsible for the retention of liquids and sodium, especially after the ovulatory phase, when the highest concentration of this hormone occurs and, in this way, fl uid retention can interfere in body composition. To confi rm this hypothesis, seven healthy women (22.71 ± 2.63 years, 62.20 ± 7.62 kg, 161.57 ± 3.15 cm, 27.40 ± 3.58 % fat), training practitioners who were weighted for at least two months and did not use oral contraceptives, were evaluated during the menstrual cycle - follicular phase, between the 3rd and 5th days; ovulatory phase, between the 9th and 10th days; and Luteal Phase, between 17 and 21 days - by the bioelectrical impedance method (Quantum BIA-II® - RJL Systems, Inc. Clinton: MI-USA), in which the following variables were measured: total body water, intracellular water and extracellular water in liters; fat percentage; fat mass and lean mass in kg. The Shapiro Wilk test and the homogeneity through the Levene test were used to verify the distribution of the sample. The ANOVA One Way test was adopted with Bonferroni Post-Hoc. For statistical proof, p ≤ 0.05 was adopted. No signifi cant diff erences were found between the variables analyzed at each stage of the menstrual cycle. Therefore, it is concluded that variations that occur during MC are not able to morphologically infl uence the body composition of healthy and physically active women....(AU)


Subject(s)
Humans , Female , Body Composition , Body Water , Menstrual Cycle , Physical Education and Training
20.
Cuad. Hosp. Clín ; 59(1): 77-82, 2018. ilus
Article in Spanish | LILACS | ID: biblio-972871

ABSTRACT

Mediante la utilización de la Ciencia Nuclear es posible hacer uso de los isótopos estables, identificados como trazadores, que permiten la aplicación del principio fisiológico de "dilución isotópica" en el organismo y con él se puede medir el agua corporal total. En los estudios de fisiología de altura, también se aplica el fundamento que aporta la ley de conservación de masas en un organismo. La práctica de este método permite generar conocimiento en altitud, haciendo bien las cosas correctas, por lo que se logra ser efectivo en los estudios realizados en diferentes grupos poblacionales habitantes permanentes de gran altitud. La técnica nuclear, ha permitido mediante el análisis del deuterio en sujetos estudiados, establecer la composición corporal, determinando el porcentaje del agua corporal total y la masa grasa corporal. Se estima que los habitantes permanentes de gran altitud presentarían una composición corporal con menor porcentaje de agua corporal que los habitantes de nivel del mar.


Using the Nuclear Science it is possible to make use of stable isotopes, identified as tracers, which allow the application ofthe physiological principle of "isotopic dilution" in the organism and with it the total body water can be measured. In the studies of physiology at high altitude, the foundation that the law of conservation of masses in an organism is also applied. The practice of this method allows to generate knowledge at altitude doing the right things well, so it is effective in studies conducted in different population groups permanent inhabitants of high altitude. The nuclear technique, has allowed by means of the analysis of the deuterium in studied subjects, to establish the corporal composition, determining the percentage of the total corporal water and the body  fat mass. It is estimated that permanent inhabitants of high altitude would have a body composition with a lower percentage of body water than sea level inhabitants.


Subject(s)
Humans , Body Composition , Body Water
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