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1.
Eat Behav ; 53: 101882, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38723487

RESUMO

INTRODUCTION: A more comprehensive understanding of the factors regarding weight control in individuals with overweight or obesity after quitting smoking is needed. The study aimed to analyze the changes of in-treatment variables during a smoking cessation intervention and examine their impact on weight. METHODS: A total of 120 individuals who smoke with overweight or obesity (MBMI = 31.75 ± 4.31; 54.16 % female) participated in a cognitive-behavioral therapy for smoking cessation and weight control or the same treatment plus contingency management. Weight, smoking variables (cotinine and continuous abstinence), eating behaviors (appetite, grazing), exercise, and sleep were assessed weekly throughout the treatment. RESULTS: More participants gained weight over time with reduced nicotine use or abstinence. There was a tendency during treatment to increase appetite and exercise time, while grazing episodes and sleeping hours remained stable. Higher baseline weight (p < .001), greater cotinine reduction (p = .021) and time (p = .009) were associated with greater weight gain, while more hours of exercise (p = .003), no appetite changes (p = .003) and diminished appetite (p < .001) were associated with less gain over the treatment. Both treatment conditions showed similar results in all in-treatment variables. DISCUSSION: Individuals with overweight and obesity with higher baseline weight and higher baseline cotinine levels during smoking cessation interventions may require special attention to improve weight outcomes. Exercise and appetite regulation may be useful for mitigating weight gain in smoking cessation interventions for individuals with overweight or obesity.


Assuntos
Obesidade , Sobrepeso , Abandono do Hábito de Fumar , Humanos , Abandono do Hábito de Fumar/métodos , Abandono do Hábito de Fumar/psicologia , Feminino , Masculino , Adulto , Sobrepeso/terapia , Sobrepeso/psicologia , Obesidade/terapia , Obesidade/psicologia , Exercício Físico/psicologia , Exercício Físico/fisiologia , Terapia Cognitivo-Comportamental/métodos , Peso Corporal/fisiologia , Comportamento Alimentar/psicologia , Aumento de Peso/fisiologia , Pessoa de Meia-Idade , Apetite/fisiologia
2.
Brain Res ; 1838: 148996, 2024 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-38744387

RESUMO

INTRODUCTION: The excessive fat accumulation in obesity, resulting from an unbalanced diet, can lead to metabolic and neurological disorders and increase the risk of developing anxiety and depression. AIM: Assess the impact of dietary intervention (DI) on the serotonergic system, brain-derived neurotrophic factor (BDNF) expression and behaviors of obese mice. METHODS: Male C57BL/6 mice, 5 weeks old, received a high-fat diet (HFD) for 10 weeks for the induction of obesity. After this period, for 8 weeks, half of these animals received a control diet (CD), group obese (OB) + control diet (OB + CD, n = 10), and another half continued being fed HFD, group obese + HFD (OB + HFD, n = 10). At the end of the eighth week of intervention, behavioral tests were performed (sucrose preference test, open field, novel object recognition, elevated plus maze and tail suspension). Body weight and food intake were assessed weekly. Visceral adiposity, the hippocampal and hypothalamic protein expression of BDNF, 5-HT1A (5-HT1A serotonin receptor) and TPH2 (key enzyme in serotonin synthesis), were evaluated after euthanasia. RESULTS: The dietary intervention involved changing from a HFD to a CD over an 8-week period, effectively reduced body weight gain, adiposity, and anhedonia-like behavior. In the OB + HFD group, we saw a lower sucrose preference and shorter traveled distance in the open field, along with increased pro-BDNF expression in the hypothalamus compared to the OB + CD mice. However, the levels of TPH2 and 5-HT1A remained unchanged. CONCLUSION: The HFD model induced both obesity and anhedonia, but the dietary intervention successfully improved these conditions.


Assuntos
Adiposidade , Anedonia , Peso Corporal , Fator Neurotrófico Derivado do Encéfalo , Dieta Hiperlipídica , Camundongos Endogâmicos C57BL , Obesidade , Serotonina , Animais , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Masculino , Anedonia/fisiologia , Serotonina/metabolismo , Obesidade/metabolismo , Dieta Hiperlipídica/efeitos adversos , Adiposidade/fisiologia , Camundongos , Peso Corporal/fisiologia , Camundongos Obesos , Hipocampo/metabolismo , Receptor 5-HT1A de Serotonina/metabolismo , Triptofano Hidroxilase/metabolismo , Comportamento Animal/fisiologia , Hipotálamo/metabolismo , Padrões Dietéticos
3.
Physiol Behav ; 282: 114582, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-38750805

RESUMO

Food restriction can have profound effects on various aspects of behavior, physiology, and morphology. Such effects might be amplified in animals that are highly active, given that physical activity can represent a substantial fraction of the total daily energy budget. More specifically, some effects of food restriction could be associated with intrinsic, genetically based differences in the propensity or ability to perform physical activity. To address this possibility, we studied the effects of food restriction in four replicate lines of High Runner (HR) mice that have been selectively bred for high levels of voluntary wheel running. We hypothesized that HR mice would respond differently than mice from four non-selected Control (C) lines. Healthy adult females from generation 65 were housed individually with wheels and provided access to food and water ad libitum for experimental days 1-19 (Phase 1), which allowed mice to attain a plateau in daily running distances. Ad libitum food intake of each mouse was measured on days 20-22 (Phase 2). After this, each mouse experienced a 20 % food restriction for 7 days (days 24-30; Phase 3), and then a 40 % food restriction for 7 additional days (days 31-37; Phase 4). Mice were weighed on experimental days 1, 8, 9, 15, 20, and 23-37 and wheel-running activity was recorded continuously, in 1-minute bins, during the entire experiment. Repeated-measures ANOVA of daily wheel-running distance during Phases 2-4 indicated that HR mice always ran much more than C, with values being 3.29-fold higher during the ad libitum feeding trial, 3.58-fold higher with -20 % food, and 3.06-fold higher with -40 % food. Seven days of food restriction at -20 % did not significantly reduce wheel-running distance of either HR (-5.8 %, P = 0.0773) or C mice (-13.3 %, P = 0.2122). With 40 % restriction, HR mice showed a further decrease in daily wheel-running distance (P = 0.0797 vs. values at 20 % restriction), whereas C mice did not (P = 0.4068 vs. values at 20 % restriction) and recovered to levels similar to those on ad libitum food (P = 0.3634). For HR mice, daily running distances averaged 11.4 % lower at -40 % food versus baseline values (P = 0.0086), whereas for C mice no statistical difference existed (-4.8 %, P = 0.7004). Repeated-measures ANOVA of body mass during Phases 2-4 indicated a highly significant effect of food restriction (P = 0.0001), but no significant effect of linetype (P = 0.1764) and no interaction (P = 0.8524). Both HR and C mice had a significant reduction in body mass only when food rations were reduced by 40 % relative to ad libitum feeding, and even then the reductions averaged only -0.60 g for HR mice (-2.6 %) and -0.49 g (-2.0 %) for C mice. Overall, our results indicate a surprising insensitivity of body mass to food restriction in both high-activity (HR) and ordinary (C) mice, and also insensitivity of wheel running in the C lines of mice, thus calling for studies of compensatory mechanisms that allow this insensitivity.


Assuntos
Peso Corporal , Ingestão de Alimentos , Atividade Motora , Corrida , Animais , Camundongos , Feminino , Peso Corporal/fisiologia , Peso Corporal/genética , Ingestão de Alimentos/fisiologia , Ingestão de Alimentos/genética , Atividade Motora/fisiologia , Corrida/fisiologia , Privação de Alimentos/fisiologia , Seleção Artificial , Análise de Variância
4.
Technol Health Care ; 32(S1): 361-369, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38759061

RESUMO

BACKGROUND: Studies investigating postural balance during various infant care postures have not been reported yet. OBJECTIVE: The aim of this study was to measure static postural balance when holding an infant dummy in-arms and carrying an infant dummy on back according to different infant dummy weights. METHODS: Sixteen healthy young subjects participated in a balance test. Infant dummies with weights of 4.6 kg (1-month) and 9.8 kg (12-month) were used in this study. All subjects were asked to naturally stand on a force platform in two infant care postures (holding an infant in-arms and carrying an infant on one's back). Center of pressure (COP) was measured from the force platform. Quantitative variables were derived from the COP. Two-way repeated measure analysis of variance (ANOVA) was performed to determine main effects of infant care postures, infant weight, and their interactions on COP variables. RESULTS: Back carrying a 12-month infant dummy had the greatest amplitude in all COP variables. Back carrying posture showed significantly greater mean distance and peak power, faster mean velocity, and wider COP area compared to holding posture (P< 0.05). There were significant weight effects of most COP variables mainly in AP direction (P< 0.01). CONCLUSIONS: Our results could contribute to the prevention of musculoskeletal diseases or prevention of fall due to various infant care activities by developing an assisting device to improve postural balance.


Assuntos
Peso Corporal , Equilíbrio Postural , Postura , Humanos , Equilíbrio Postural/fisiologia , Masculino , Postura/fisiologia , Lactente , Feminino , Peso Corporal/fisiologia , Cuidado do Lactente/métodos , Adulto Jovem
5.
Biol Psychol ; 190: 108807, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38703810

RESUMO

Attentional bias toward weight-related stimuli plays a crucial role in the development and maintenance of body image disturbances. However, the temporal dynamics of attentional biases responsible for the previously reported behavioral effects caused by the task-irrelevant but spatial-relevant weight-related stimuli presented in the peripheral visual field among females with high weight dissatisfaction (HWD) remain unclear. The present study combined the modified dot-probe task and event-related potentials to explore the temporal dynamics of spatial attentional biases toward weight-related words among females with HWD. The results showed significantly larger N2pc amplitudes were elicited by fat-related and thin-related words than neutral words only in the HWD group. Moreover, only fat-related words elicited a significant PD for the HWD group, and the PD amplitudes were larger in the HWD group than in the control group. These findings revealed that weight-related words initially captured spatial allocation among females with HWD, and then fat-related words were actively suppressed after the initial capturing.


Assuntos
Viés de Atenção , Eletroencefalografia , Potenciais Evocados , Humanos , Feminino , Adulto Jovem , Viés de Atenção/fisiologia , Potenciais Evocados/fisiologia , Peso Corporal/fisiologia , Insatisfação Corporal/psicologia , Adulto , Tempo de Reação/fisiologia , Percepção Espacial/fisiologia , Estimulação Luminosa/métodos , Atenção/fisiologia
6.
Narra J ; 4(1): e533, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38798838

RESUMO

Study assessing the correlation between body weight and body mass index (BMI) with blood pressure in young adults is still limited. The aim of this was to investigate the link between body weight and BMI with blood pressure, as well as to assess how much increasing of body weight and BMI contribute to raising blood pressure in young men and women. A cross-sectional study was conducted among 1,107 healthy young adults aged 18-22 years (women, n=705; men, n=402). Chi-squared test was used to assess the association between body weight and BMI with blood pressure. The Pearson correlation and linear regression analysis were used to determine the correlation and direction of the relationship between body weight and BMI with blood pressure. Our data indicated the associations between body weight and BMI with blood pressure (both had p=0.001). There was a strong correlation between body weight and systolic blood pressure (SBP) (r=0.709; p<0.001), whereas the correlation between body weight and diastolic blood pressure (DBP) was moderate (r=0.374; p<0.001). BMI moderately influenced SBP and DBP (r=0.488 and r=0.358; p<0.001). A linear correlation analysis revealed a positive correlation between body weight and BMI with blood pressure, where an increase in body weight of 1 kg resulted an increase in SBP of 0.725 mmHg and DBP of 0.318 mmHg. In addition, an increase in BMI of 1 kg/m2 followed by an increase in SBP and DBP of 1.6 mmHg and 0.834 mmHg, respectively. This study highlights that nutritional status in young men and women is linked and has a positive correlation with blood pressure.


Assuntos
Pressão Sanguínea , Índice de Massa Corporal , Peso Corporal , Humanos , Masculino , Feminino , Adulto Jovem , Pressão Sanguínea/fisiologia , Estudos Transversais , Peso Corporal/fisiologia , Adolescente , Adulto
7.
Tunis Med ; 102(4): 235-240, 2024 Apr 05.
Artigo em Francês | MEDLINE | ID: mdl-38746964

RESUMO

INTRODUCTION-AIM: Flexible insulin therapy is currently considered the gold standard therapy of type 1 diabetes. We aimed to study the evolution of glycemic control, weight and nutritional intake of a group of patients with type 1 diabetes, three months after the initiation of functional insulin therapy (FIT). METHODS: This was a prospective longitudinal study having included 30 type 1 diabetic patients hospitalized for education to FIT. Each patient underwent an assessment of glycemic control (glycated hemoglobin (A1C) and number of hypoglycemia), weight and nutritional intake before FIT and 3 months after the initiation of this educative approach. RESULTS: The mean age of patients was 21,8 ± 7,9 years and the sex ratio was 0,5. The mean duration of diabetes was 7,2 ± 6 years. Three months after initiation of FIT, we observed a significant lowering of A1C, which went from 9,2 ± 1,6% to 8,3 ± 1,4% (p<0,001) of the number of minor hypoglycemia (p=0,001) and that of severe hypoglycemia (p= 0,021). the average weight went from 64,6 ± 13,1 kg to 65,5 ± 13,5 kg (p = 0,040) with a significant increase in BMI (p = 0,041). Weight gain was observed in 67% of patients. This weight gain contrasted with a significant decrease in caloric (p = 0,040) and in carbohydrates intakes (p = 0,027). CONCLUSION: Weight gain, associated with better glycemic control, should encourage the healthcare team to strengthen therapeutic education of patients undergoing FIT in order to limit weight gain.


Assuntos
Peso Corporal , Diabetes Mellitus Tipo 1 , Hipoglicemiantes , Insulina , Humanos , Diabetes Mellitus Tipo 1/tratamento farmacológico , Diabetes Mellitus Tipo 1/sangue , Feminino , Masculino , Insulina/administração & dosagem , Insulina/uso terapêutico , Adulto , Adulto Jovem , Estudos Prospectivos , Estudos Longitudinais , Adolescente , Hipoglicemiantes/administração & dosagem , Hipoglicemiantes/uso terapêutico , Peso Corporal/fisiologia , Hemoglobinas Glicadas/análise , Hemoglobinas Glicadas/metabolismo , Hipoglicemia/prevenção & controle , Hipoglicemia/induzido quimicamente , Hipoglicemia/epidemiologia , Controle Glicêmico/métodos , Ingestão de Energia , Aumento de Peso/fisiologia , Aumento de Peso/efeitos dos fármacos , Fatores de Tempo , Glicemia/análise , Glicemia/metabolismo
8.
BMC Med ; 22(1): 185, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38693528

RESUMO

BACKGROUND: We investigated the effects of a physical activity encouragement intervention based on a smartphone personal health record (PHR) application (app) on step count increases, glycemic control, and body weight in patients with type 2 diabetes (T2D). METHODS: In this 12-week, single-center, randomized controlled, 12-week extension study, patients with T2D who were overweight or obese were randomized using ratio 1:2 to a group using a smartphone PHR app (control group) or group using the app and received individualized motivational text messages (intervention group) for 12 weeks. During the extension period, the sending of the encouraging text messages to the intervention group was discontinued. The primary outcome was a change in daily step count after 12 weeks and analyzed by independent t-test. The secondary outcomes included HbA1c, fasting glucose, and body weight analyzed by paired or independent t-test. RESULTS: Of 200 participants, 62 (93.9%) and 118 (88.1%) in the control and intervention group, respectively, completed the 12-week main study. The change in daily step count from baseline to week 12 was not significantly different between the two groups (P = 0.365). Among participants with baseline step counts < 7,500 steps per day, the change in the mean daily step count at week 12 in the intervention group (1,319 ± 3,020) was significantly larger than that in control group (-139 ± 2,309) (P = 0.009). At week 12, HbA1c in the intervention group (6.7 ± 0.5%) was significantly lower than that in control group (6.9 ± 0.6%, P = 0.041) and at week 24, changes in HbA1c from baseline were significant in both groups but, comparable between groups. Decrease in HbA1c from baseline to week 12 of intervention group was greater in participants with baseline HbA1c ≥ 7.5% (-0.81 ± 0.84%) compared with those with baseline HbA1c < 7.5% (-0.22 ± 0.39%) (P for interaction = 0.014). A significant reduction in body weight from baseline to week 24 was observed in both groups without significant between-group differences (P = 0.370). CONCLUSIONS: App-based individualized motivational intervention for physical activity did not increase daily step count from baseline to week 12, and the changes in HbA1c levels from baseline to week 12 were comparable. TRIAL REGISTRATION: ClinicalTrials.gov (NCT03407222).


Assuntos
Diabetes Mellitus Tipo 2 , Controle Glicêmico , Aplicativos Móveis , Humanos , Diabetes Mellitus Tipo 2/terapia , Masculino , Pessoa de Meia-Idade , Feminino , Controle Glicêmico/métodos , Idoso , Exercício Físico/fisiologia , Adulto , Glicemia/metabolismo , Hemoglobinas Glicadas/metabolismo , Hemoglobinas Glicadas/análise , Peso Corporal/fisiologia , Smartphone , Envio de Mensagens de Texto
9.
Exp Brain Res ; 242(6): 1373-1385, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38565782

RESUMO

BACKGROUND AND OBJECTIVES: Alterations of the sensory-motor body schema question the origins of such distortions. For example, in anorexia nervosa where patients think they are broader than they really are (body image) but act as if it was really the case (body schema). To date, the results of studies about what hinders the updating of the body schema so much (weight, body image) have been contradictory. METHODS: We therefore conducted two studies that aimed to assess the impact of weight and body image problems on body schema in 92 young women without anorexia nervosa. For this purpose, we used a new body schema assessment tool (SKIN) that is sensitive enough to detect fine alterations of body schema in seven different body parts. RESULTS: In Study 1, the thinness or overweight of the young women had a major impact on their tactile perception, especially because the assessed body part was a sensitive area for body dissatisfaction in young women (e.g., belly, thigh). In Study 2, the level of body dissatisfaction of the participants in its attitudinal and perceptual dimension also had a negative impact on their body schema, again in interaction with weight and body part. CONCLUSIONS: These results imply that body dissatisfaction and thinness are predictors of massive body schema distortions. An oversized body schema could maintain various weight-control behaviors, thus risking the development, maintenance, or relapse of an eating disorder.


Assuntos
Imagem Corporal , Peso Corporal , Humanos , Feminino , Imagem Corporal/psicologia , Adulto Jovem , Peso Corporal/fisiologia , Adulto , Estudantes/psicologia , Adolescente , Universidades , Insatisfação Corporal , Inquéritos e Questionários , Percepção do Tato/fisiologia
10.
Med Sci Monit ; 30: e943765, 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38659197

RESUMO

BACKGROUND The human foot has a complex structure and the ligamentous and muscular apparatus undergoes transformation and adaptation during its ontogenetic development. Excessive body mass may be one of the factors disrupting proper foot formation. This study aimed to assess the foot structure in preschool children in relation to body mass. MATERIAL AND METHODS A total of 105 children aged 6.27±0.60 years were examined. Height, weight, and segmental body composition were determined using the Tanita MC-780 body composition analyzer. The foot structure was assessed using the Kasperczyk method, supplemented with digital analysis using the Podoscan 2D camera. The Weisflog index and gamma angle for feet were calculated. Children were divided into 2 groups: children in Group I did not have foot deformities and those in Group II had foot deformities. RESULTS No correlation was observed between body mass and the occurrence of anomalies in foot structure. A correlation was noted between the Weisflog index for the right foot and height in both groups. The Weisflog index for both feet was correlated with BMI, with higher values obtained for the left foot in both groups. In Group II, a correlation was observed between the gamma angle value for the left foot and the predicted muscle mass for the right lower limb, as well as between the same foot and the predicted muscle mass for the left lower limb. CONCLUSIONS No correlation was observed between high BMI and the occurrence of anomalies in foot structure. A relationship was identified between muscle mass and foot structure.


Assuntos
Composição Corporal , Índice de Massa Corporal , Peso Corporal , , Humanos , Pé/anatomia & histologia , Feminino , Masculino , Pré-Escolar , Criança , Composição Corporal/fisiologia , Peso Corporal/fisiologia , Deformidades do Pé/fisiopatologia , Estatura/fisiologia
11.
Alzheimers Res Ther ; 16(1): 91, 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38664832

RESUMO

BACKGROUND: Given the rising awareness of health-related lifestyle modifications, the impact of changes in body weight (BW) on cognitive function and dementia generates significant concern. This study aimed to investigate the association between BW changes and dementia in a middle-aged Korean population. METHODS: A retrospective, population-based longitudinal study was conducted utilizing data from the National Health Insurance Service (NHIS) database. Participants aged 40 years or older in 2011 who underwent at least five health checkups between 2002 and 2011 were followed-up for dementia until 2020. A total of 3,635,988 dementia-free Korean aged < 65 at baseline were examined. We analyzed the association between BW variability independent of the mean (VIM) with BW cycle, defined as either an upward or a downward direction of BW, and the risk of incident dementia. RESULTS: The results showed an increased risk of dementia in the highest quartile of VIM quartile (hazard ratio [HR] 1.52, 95% confidence interval [CI] 1.47-1.58) compared to the lowest quartile of VIM. Additionally, the results showed an even higher increased risk of dementia in the highest BW cycle (≥ 2 cycles of 10% BW = HR 2.00, 95% CI 1.74-1.29). Notably, the combined concept of VIM with BW cycle showed an even higher dementia risk (highest quartile of VIM with ≥ 2 cycles of 10% BW = HR 2.37, 95% CI 2.05-2.74) compared to the baseline group (lowest quartile of VIM with < 3% BW cycle). CONCLUSIONS: The present study highlights the importance of considering BW changes with BW variability along with the BW cycle to assess dementia risk in detail, providing valuable insights for preventive strategies.


Assuntos
Peso Corporal , Demência , Humanos , Masculino , Feminino , Demência/epidemiologia , Pessoa de Meia-Idade , Estudos Longitudinais , Peso Corporal/fisiologia , República da Coreia/epidemiologia , Estudos Retrospectivos , Adulto , Fatores de Risco , Estudos de Coortes , Idoso , Idade de Início
12.
Exp Physiol ; 109(5): 754-765, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38488681

RESUMO

This study investigates the effects of varying loading conditions on excitability in neural pathways and gait dynamics. We focussed on evaluating the magnitude of the Hoffman reflex (H-reflex), a neurophysiological measure representing the capability to activate motor neurons and the timing and placement of the foot during walking. We hypothesized that weight manipulation would alter H-reflex magnitude, footfall and lower body kinematics. Twenty healthy participants were recruited and subjected to various weight-loading conditions. The H-reflex, evoked by stimulating the tibial nerve, was assessed from the dominant leg during walking. Gait was evaluated under five conditions: body weight, 20% and 40% additional body weight, and 20% and 40% reduced body weight (via a harness). Participants walked barefoot on a treadmill under each condition, and the timing of electrical stimulation was set during the stance phase shortly after the heel strike. Results show that different weight-loading conditions significantly impact the timing and placement of the foot and gait stability. Weight reduction led to a 25% decrease in double limb support time and an 11% narrowing of step width, while weight addition resulted in an increase of 9% in step width compared to body weight condition. Furthermore, swing time variability was higher for both the extreme weight conditions, while the H-reflex reduced to about 45% between the extreme conditions. Finally, the H-reflex showed significant main effects on variability of both stance and swing phases, indicating that muscle-motor excitability might serve as feedback for enhanced regulation of gait dynamics under challenging conditions.


Assuntos
Marcha , Reflexo H , Caminhada , Suporte de Carga , Humanos , Marcha/fisiologia , Reflexo H/fisiologia , Masculino , Adulto , Feminino , Suporte de Carga/fisiologia , Fenômenos Biomecânicos/fisiologia , Adulto Jovem , Caminhada/fisiologia , Estimulação Elétrica/métodos , Músculo Esquelético/fisiologia , Nervo Tibial/fisiologia , Eletromiografia , Pé/fisiologia , Adaptação Fisiológica/fisiologia , Neurônios Motores/fisiologia , Peso Corporal/fisiologia
13.
Int J Dev Neurosci ; 84(4): 293-304, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38530155

RESUMO

Neonatal oxygen deficiency in rats may disturb growth and long-term metabolic homeostasis. In order to facilitate metabolic evaluation, the subjects are usually housed individually. However, social isolation associated with individually housed conditions alters animal behavior, which may influence the experimental results. This study investigated the effects of social isolation on neonatal anoxia-induced changes in growth and energy metabolism. Male and female Wistar rats were exposed, on postnatal day 2 (P2), to either 25-min of anoxia or control treatment. From P27 onward, part of the subjects of each group was isolated in standard cages, and the remaining subjects were housed in groups. At P34 or P95, the subjects were fasted for 18 h, refeed for 1 h, and then perfused 30 min later. Glycemia, leptin, insulin, and morphology of the pancreas were evaluated at both ages. For subjects perfused at P95, body weight and food intake were recorded up to P90, and the brain was collected for Fos and NeuN immunohistochemistry. Results showed that male rats exposed to neonatal anoxia and social isolation exhibited increased body weight gain despite the lack of changes in food intake. In addition, social isolation (1) decreased post-fasting weight loss and post-fasting food intake and (2) increased glycemia, insulin, and leptin levels of male and female rats exposed to anoxia and control treatments, both at P35 and P95. Furthermore, although at P35, anoxia increased insulin levels of males, it decreased the area of the ß-positive cells in the pancreas of females. At P95, anoxia increased post-prandial weight loss of males, post-fasting food intake, insulin, and leptin, and decreased Fos expression in the arcuate nucleus (ARC) of males and females. Hyperphagia was associated with possible resistance to leptin and insulin, suspected by the high circulating levels of these hormones and poor neuronal activation of ARC. This study demonstrated that continuous social isolation from weaning modifies, in a differentiated way, the long-term energy metabolism and growth of male and female Wistar rats exposed to neonatal anoxia or even control treatments. Therefore, social isolation should be considered as a factor that negatively influences experimental results and the outcomes of the neonatal injury. These results should also be taken into account in clinical procedures, since the used model simulates the preterm babies' conditions and some therapeutic approaches require isolation.


Assuntos
Animais Recém-Nascidos , Peso Corporal , Ingestão de Alimentos , Metabolismo Energético , Hipóxia , Ratos Wistar , Isolamento Social , Animais , Isolamento Social/psicologia , Masculino , Feminino , Ratos , Metabolismo Energético/fisiologia , Ingestão de Alimentos/fisiologia , Hipóxia/metabolismo , Peso Corporal/fisiologia , Leptina/sangue , Leptina/metabolismo , Glicemia/metabolismo , Insulina/sangue , Insulina/metabolismo , Desmame , Fatores Etários
14.
Nutrients ; 16(5)2024 Mar 04.
Artigo em Inglês | MEDLINE | ID: mdl-38474863

RESUMO

In 2017, four independent publications described the glial cell-derived neurotrophic factor (GDNF) receptor alpha-like (GFRAL) as receptor for the growth differentiation factor 15 (GDF15, also MIC-1, NAG-1) with an expression exclusively in the mice brainstem area postrema (AP) and nucleus tractus solitarii (NTS) where it mediates effects of GDF15 on reduction of food intake and body weight. GDF15 is a cell stress cytokine with a widespread expression and pleiotropic effects, which both seem to be in contrast to the reported highly specialized localization of its receptor. This discrepancy prompts us to re-evaluate the expression pattern of GFRAL in the brain and peripheral tissues of mice. In this detailed immunohistochemical study, we provide evidence for a more widespread distribution of this receptor. Apart from the AP/NTS region, GFRAL-immunoreactivity was found in the prefrontal cortex, hippocampus, nucleus arcuatus and peripheral tissues including liver, small intestine, fat, kidney and muscle tissues. This widespread receptor expression, not taken into consideration so far, may explain the multiple effects of GDF-15 that are not yet assigned to GFRAL. Furthermore, our results could be relevant for the development of novel pharmacological therapies for physical and mental disorders related to body image and food intake, such as eating disorders, cachexia and obesity.


Assuntos
Caquexia , Obesidade , Humanos , Camundongos , Animais , Receptores de Fator Neurotrófico Derivado de Linhagem de Célula Glial/metabolismo , Peso Corporal/fisiologia , Obesidade/metabolismo , Caquexia/metabolismo , Núcleo Solitário/metabolismo
15.
Pflugers Arch ; 476(5): 769-778, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38433124

RESUMO

Studies have reported enhanced thermoregulatory function as pregnancy progresses; however, it is unclear if differences in thermoregulation are attributed to weight gain or other physiological changes. This study aimed to determine if total body weight will influence thermoregulation (heat production (Hprod)), heart rate, and perceptual measurements in response to weight-bearing exercise during early to late pregnancy. A cross-sectional design of healthy pregnant women at different pregnancy time points (early, T1; middle, T2; late, T3) performed a 7-stage weight-bearing incremental exercise protocol. Measurements of Hprod, HR, and RPE were examined. Two experimental groups were studied: (1) weight matched and (2) non-weight matched, in T1, T2, and T3. During exercise, equivalent Hprod at T1 (326 ± 88 kJ), T2 (330 ± 43 kJ), and T3 (352 ± 52 kJ) (p = 0.504); HR (p = 0.830); and RPE (p = 0.195) were observed in the WM group at each time point. In the NWM group, Hprod (from stages 1-6 of the exercise) increased across pregnancy time points, T1 (291 ± 76 kJ) to T2 (347 ± 41 kJ) and T3 (385 ± 47 kJ) (p < 0.001). HR increased from T1 to T3 in the warm-up to stage 6 (p = 0.009). RPE did not change as pregnancy time point progressed (p = 0.309). Total body weight, irrespective of pregnancy time point, modulates Hprod and HR during exercise. Therefore, accounting for total body weight is crucial when comparing thermoregulatory function during exercise across pregnancy.


Assuntos
Peso Corporal , Exercício Físico , Feminino , Humanos , Gravidez , Exercício Físico/fisiologia , Adulto , Peso Corporal/fisiologia , Frequência Cardíaca/fisiologia , Regulação da Temperatura Corporal/fisiologia , Termogênese/fisiologia , Estudos Transversais
16.
Indian Pediatr ; 61(5): 425-434, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38517004

RESUMO

OBJECTIVE: We aimed to develop anthropometric growth references for Indian children and adolescents, based on available 'healthy' child data from multiple national surveys. METHODOLOGY: Data on 'healthy' children, defined by comparable WHO's Multicentre Growth Reference Study (MGRS) selection criteria, were extracted from four Indian surveys over the last 2 decades, viz, NFHS-3, 4, and 5 and Comprehensive National Nutrition Survey (CNNS). Reference distributions of height-for-age for children up to 19 years, weight-for-age for children up to 9y, weight-for-height for children less than 5 years and BMI for age for children between 5-19 y were estimated by GAMLSS with Box-Cox Power Exponential (BCPE) family. The national prevalence of growth faltering was also estimated by the NFHS-5 and CNNS data. RESULTS: The distributions of the new proposed Indian growth references are consistently lower than the WHO global standard, except in the first 6 months of age. Based on these references, growth faltering in Indian children and adolescents reduced > 50% in comparison with the WHO standard. CONCLUSION: The study findings revealed that the WHO one-standard-fits-all approach may lead to inflated estimates of under nutrition in India and could be a driver of misdirected policy and public health expenditure in the Indian context. However, these findings need validation through prospective and focussed studies for more robust evidence base.


Assuntos
Antropometria , Estatura , Peso Corporal , Humanos , Índia/epidemiologia , Adolescente , Criança , Pré-Escolar , Lactente , Masculino , Feminino , Estatura/fisiologia , Valores de Referência , Peso Corporal/fisiologia , Recém-Nascido , Adulto Jovem , Gráficos de Crescimento , Desenvolvimento Infantil/fisiologia
17.
Neurol Sci ; 45(7): 3277-3285, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38363446

RESUMO

OBJECTIVE: This study aimed to assess the impact of conventional rehabilitation (CR) and the combination of bodyweight-supported treadmill training (BWSTT) with CR on walking speed, endurance, balance, mobility, and the quality of life in stroke survivors. METHOD: In this prospective, randomized, controlled, and single-blind study, 30 stroke patients were included (ClinicalTrials.gov registration number: NCT04597658 date: October 22, 2020). These patients were divided into two groups: (1) CR only (control group, n = 14) and (2) CR with BWSTT (experimental group, n = 16). Both groups received CR for 3 consecutive weeks, 5 days a week, for 30 min each day. The experimental group received an additional 30 min of BWSTT per session. Patients were evaluated using the 10-m walk test (10MWT), the six-minute walk test (6MWT), the Tinetti Balance and Gait Assessment Score, the Timed Up and Go (TUG) test, the Rivermead Mobility Index (RMI), and the Stroke-Specific Quality of Life Scale (SS-QOL) before and after the intervention. RESULTS: Both groups showed significant improvements across all scales after the intervention. The BWSTT group exhibited particularly noteworthy enhancements in comfortable 10MWT and TUG scores (p = 0.043 and p = 0.025, respectively) compared to the CR group post-intervention. CONCLUSION: In conclusion, a holistic approach combining conventional physiotherapy with overground gait training can enhance various aspects of mobility. This approach offers a cost-effective and equipment-free alternative to BWSTT and necessitates specialized treadmill and bodyweight support systems, incurring higher costs. However, using BWSTT as a co-therapy therapy can be costly but provides additional benefits for enhancing functional mobility.


Assuntos
Terapia por Exercício , Equilíbrio Postural , Qualidade de Vida , Reabilitação do Acidente Vascular Cerebral , Humanos , Reabilitação do Acidente Vascular Cerebral/métodos , Masculino , Feminino , Pessoa de Meia-Idade , Método Simples-Cego , Terapia por Exercício/métodos , Idoso , Equilíbrio Postural/fisiologia , Estudos Prospectivos , Acidente Vascular Cerebral/fisiopatologia , Acidente Vascular Cerebral/terapia , Peso Corporal/fisiologia , Velocidade de Caminhada/fisiologia , Resultado do Tratamento , Teste de Esforço/métodos , Avaliação de Resultados em Cuidados de Saúde
18.
Eat Behav ; 53: 101853, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38382309

RESUMO

OBJECTIVES: Weight suppression (WS) defines the difference between the highest weight in adulthood and the current weight. WS at lowest weight is the difference between the highest and the lowest ever weight. Weight rebound is the difference between the past lowest weight and current weight. The distinction in the capacities of WS, weight rebound, and WS at the lowest weight remains unclear regarding their efficacy in forecasting clinical endpoints. This study assessed the relationship between WS, WS at lowest weight and/or weight rebound and eating disorder (ED) clinical severity. METHODS: In this retrospective cohort study, adult participants were selected at the Outpatient Unit for multidisciplinary assessment of ED, Montpellier, France, between February 2012 and October 2014 and May 2017 and January 2020. ED clinical severity was evaluated using the Eating Disorder Examination Questionnaire (EDE-Q). RESULTS: The sample included 303 patients: 204 with anorexia nervosa (AN) and 99 with bulimia nervosa (BN). The EDE-Q total score was positively correlated with WS at lowest weight in patients with AN (Spearman's rho = 0.181, p = 0.015) and with BN (Spearman's rho = 0.377; p < 0.001). It was also positively correlated with weight rebound (Spearman's rho = 0.319; p = 0.003) in patients with BN. In the multivariate analysis, EDE-Q total score was associated with WS at lowest weight only in patients with BN (ß = 0.265; p = 0.03). CONCLUSION: WS at lowest weight seems to be a good measure of ED clinical severity. More research is needed for better understanding WS at lowest weight in assessment and treatment of patients with ED.


Assuntos
Peso Corporal , Índice de Gravidade de Doença , Humanos , Feminino , Estudos Retrospectivos , Adulto , Masculino , Peso Corporal/fisiologia , Anorexia Nervosa/psicologia , Anorexia Nervosa/fisiopatologia , Anorexia Nervosa/terapia , Adulto Jovem , Transtornos da Alimentação e da Ingestão de Alimentos/psicologia , Transtornos da Alimentação e da Ingestão de Alimentos/fisiopatologia , Bulimia Nervosa/psicologia , Redução de Peso/fisiologia , Inquéritos e Questionários , Adolescente
19.
Int J Obes (Lond) ; 48(5): 635-645, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38336864

RESUMO

BACKGROUND: Little is known about the degrees and shapes of associations of changes in obesity indices with cardiovascular disease (CVD) and mortality risks. We aimed to conduct a dose-response meta-analysis for the associations of changes in weight, body mass index (BMI), waist circumference (WC), waist-to-hip ratio, and waist-to-height ratio with CVD events, CVD-specific deaths, and all-cause mortality. METHODS: We searched MEDLINE via OvidSP, Embase via OvidSP, Web of Science, CINAHL, and Scopus for articles published before January 8th, 2023. Dose-response relationships were modeled using the one-stage mixed-effects meta-analysis. Random-effects models were used to pool the relative risk (RR) and 95% confidence interval (CI). RESULTS: We included 122 articles. Weight change was negatively associated with deaths from CVD and any cause, while WC change elevated CVD-specific mortality. Non-linear relationships also confirmed the adverse effects of increased WC on CVD-specific mortality. Additionally, gains of 5 kg in weight and 1 kg/m2 in BMI or more were associated with elevated CVD events, especially among young adults and individuals without CVD. Conversely, reductions of 5 kg in weight and 1 kg/m2 in BMI or more were associated with higher CVD-specific and all-cause deaths than increased counterparts, particularly among old adults and individuals with CVD. Similar non-linear relationships between relative changes in weight and BMI and deaths from CVD and any cause were observed. CONCLUSIONS: The effects of changes in weight and BMI on CVD outcomes were affected by age and cardiovascular health. Tailored weight management and avoidance of increased WC should be recommended.


Assuntos
Índice de Massa Corporal , Doenças Cardiovasculares , Obesidade , Circunferência da Cintura , Humanos , Doenças Cardiovasculares/mortalidade , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/etiologia , Obesidade/complicações , Obesidade/epidemiologia , Relação Cintura-Quadril , Peso Corporal/fisiologia , Feminino , Fatores de Risco
20.
Physiol Behav ; 277: 114498, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38367943

RESUMO

Eating diets high in salt has been associated with alterations in the immune system and the potential development of neuropsychiatric disorders. This area of research shows promise, but there is currently a limited amount of research on this topic. The present study investigated whether a high salt diet (HSD) affects anhedonia and stress-coping response behaviors in young male and female Wistar rats. In this study, male and female Wistar rats were fed an HSD (8 % NaCl w/w) from weaning to post-natal day (PND) 64. From PND 60 to 64, the rats underwent a spontaneous locomotor activity test (SLA), sucrose splash test (SST), sucrose preference test (SPT), and forced swim test (FST), followed by euthanasia at PND 65. Male and female rats consuming the HSD exhibited an increase in water intake compared to the corresponding control diet (CD) groups. Male rats had lower body weight despite having similar food intakes compared to the CD group. Male rats displayed an active stress-coping behavior in the FST, characterized by increased mobility. Additionally, HSD-fed males exhibited a greater preference for sucrose solution in the SPT. However, no effect of diet and sex were detected in the SST and the SLA, and hypothalamic levels of leptin and ghrelin receptors. On the other hand, female rats were less susceptible to the experimental conditions applied in this protocol than males.


Assuntos
Capacidades de Enfrentamento , Cloreto de Sódio na Dieta , Ratos , Animais , Masculino , Feminino , Ratos Wistar , Peso Corporal/fisiologia , Sacarose
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