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1.
Korean J Fam Med ; 2024 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-38978459

RESUMO

Background: Circadian misalignment is associated with metabolic syndrome. This study aimed to examine the association between circadian rhythm-disturbing factors and metabolic syndrome. Methods: We used data from the 7th and 8th Korea National Health and Nutrition Examination Survey conducted between 2016 and 2020, which surveyed 16,253 individuals. Circadian rhythm-disturbing factors were defined as follows: sleep duration outside the reference group (6-8 hours), irregular breakfast, shift work, and physical inactivity. The adjusted odds ratio (aOR) for metabolic syndrome was calculated based on the number of circadian rhythm-disturbing factors present in adults over the age of 19 years. Results: Among a total of 16,253 participants (mean age 48.2±15 years), metabolic syndrome was found in 5,237 participants (29.3 %). The participants were classified into three categories based on the number of circadian rhythm-disturbing factors as follows: 2,627 (15.6%) did not have any factors, 6,406 (38.13%) had one factor, and 7,220 (46.3%) had two or more factors. Participants with a single circadian rhythm-disturbing factor were 21% more likely to have metabolic syndrome (aOR, 1.21; 95% confidence interval [CI], 1.08-1.36), and participants with two or more factors were 27% more likely to have metabolic syndrome (aOR, 1.27; 95% CI, 1.12-1.43). Conclusion: Circadian rhythm-disturbing factors were significantly associated with the prevalence of metabolic syndrome in Korean adults. This finding has potential clinical implications for maintaining circadian rhythms by avoiding certain factors to prevent metabolic syndrome. Further studies are required to confirm these findings.

2.
BMC Public Health ; 24(1): 1860, 2024 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-38992623

RESUMO

BACKGROUND: Movement behaviours, such as sedentary behavior (SB) and physical inactivity, have become a public health issue due to their implications for physical and mental health. The literature indicates that the university environment influences the movement behaviors of university students, and the strategies adopted during the pandemic may have favored a decrease in the practice of physical activity and an increase in the time dedicated to SB in this population. We aimed to evaluate the association of SB and moderate to vigorous leisure-time physical activity (MVPA) with presence of symptoms of mental disorders during the COVID-19 pandemic. METHODS: This is a multicenter survey conducted with undergraduate students from eight Brazilian universities between October 2021 and February 2022 using an online questionnaire. The outcome variable was symptoms of anxiety and depression, assessed by the Depression, Anxiety, and Stress Scale-21. SB was assessed by total sitting time, being that individuals with ≥ 9 h/day were classified with high SB. The practice of MVPA was evaluated based on weekly frequency, duration, and type of exercise. Subsequently, the ratio between the time spent in MVPA (minutes/day) and the time spent in SB (hours/day) was calculated, being considered as cutoff point was the practice of 2.5 min of MVPA for each sedentary hour. To assess the association between the outcome and explanatory variables, multivariable logistic regression was performed. RESULTS: A total of 8,650 students participated in the study, with an average age of 23.9 years (SD: ± 6.34). In the multivariate analysis, the odds of anxiety symptoms [OR: 1.37 (95% CI: 1.24-1.50)] and depression [OR: 1.61 (95% CI: 1.47-1.77)] were higher in individuals with ≥ 9 h of SB per day. In the analysis of the relationship between MVPA and SB, not engaging in 2.5 min of MVPA per hour of SB increases the odds of anxiety symptoms [OR: 1.44 (95% CI: 1.31-1.58)] and depression [OR: 1.74 (95% CI: 1.59-1.92)]. CONCLUSION: The results suggest that SB is a risk factor associated with symptoms of anxiety and depression and that not engaging in MVPA exacerbates the negative effects of SB.


Assuntos
COVID-19 , Exercício Físico , Comportamento Sedentário , Estudantes , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , COVID-19/psicologia , Estudantes/psicologia , Estudantes/estatística & dados numéricos , Masculino , Universidades , Feminino , Estudos Transversais , Exercício Físico/psicologia , Adulto Jovem , Brasil/epidemiologia , Adulto , Ansiedade/epidemiologia , Depressão/epidemiologia , Saúde Mental/estatística & dados numéricos , Inquéritos e Questionários , Adolescente , Pandemias
3.
Artigo em Inglês | MEDLINE | ID: mdl-39007407

RESUMO

BACKGROUND: Mitochondria represent key organelles influencing cellular homeostasis and have been implicated in the signalling events regulating protein synthesis. METHODS: We examined whether mitochondrial bioenergetics (oxidative phosphorylation and reactive oxygen species (H2O2) emission, ROS) measured in vitro in permeabilized muscle fibres represent regulatory factors for integrated daily muscle protein synthesis rates and skeletal muscle mass changes across the spectrum of physical activity, including free-living and bed-rest conditions: n = 19 healthy, young men (26 ± 4 years, 23.4 ± 3.3 kg/m2) and following 12 weeks of resistance-type exercise training: n = 10 healthy older men (70 ± 3 years, 25.2 ± 2.1 kg/m2). Additionally, we evaluated the direct relationship between attenuated mitochondrial ROS emission and integrated daily myofibrillar and sarcoplasmic protein synthesis rates in genetically modified mice (mitochondrial-targeted catalase, MCAT). RESULTS: Neither oxidative phosphorylation nor H2O2 emission were associated with muscle protein synthesis rates in healthy young men under free-living conditions or following 1 week of bed rest (both P > 0.05). Greater increases in GSSG concentration were associated with greater skeletal muscle mass loss following bed rest (r = -0.49, P < 0.05). In older men, only submaximal mitochondrial oxidative phosphorylation (corrected for mitochondrial content) was positively associated with myofibrillar protein synthesis rates during exercise training (r = 0.72, P < 0.05). However, changes in oxidative phosphorylation and H2O2 emission were not associated with changes in skeletal muscle mass following training (both P > 0.05). Additionally, MCAT mice displayed no differences in myofibrillar (2.62 ± 0.22 vs. 2.75 ± 0.15%/day) and sarcoplasmic (3.68 ± 0.35 vs. 3.54 ± 0.35%/day) protein synthesis rates when compared with wild-type mice (both P > 0.05). CONCLUSIONS: Mitochondrial oxidative phosphorylation and reactive oxygen emission do not seem to represent key factors regulating muscle protein synthesis or muscle mass regulation across the spectrum of physical activity.

4.
BMC Public Health ; 24(1): 1926, 2024 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-39026188

RESUMO

INTRODUCTION: The rising worldwide concern of Non-Communicable Diseases (NCD) is alarming as it is associated with 80% of annual global mortality. NCD threat is rising due to, among others, the increasing ageing population, thus putting the efforts to promote health ageing at the forefront of many countries' health agenda. Physical activity has been recognised as one of the significant factors in the pursuit of healthy ageing. Nevertheless, approximately one third of individuals in Malaysia are physically inactive. The aim of this study is to determine the prevalence of physical inactivity and its associated factors among pre-retirement government healthcare workers. METHODS: This cross-sectional study was conducted from May to June 2023 among pre-retirement government healthcare workers in Kuala Lumpur, Malaysia. The sample size required was 233 and proportionate random sampling was used to recruit potential respondents who answered self-administered online questionnaires. Global Physical Activity Questionnaire (GPAQ) was used to measure the level of physical activity and data analysis was performed using SPSS version 29. RESULTS: A total of 214 complete responses were received from the 233 questionnaires distributed, giving a response rate of 91.8%. The prevalence of physical inactivity among pre-retirement healthcare workers was 39.7% as compare only 29.9% in general population. Significant predictors for physical inactivity included higher education levels (SPM, STPM, or certificate holders) (AOR = 13.4, 95% CI: 2.47-72.65), non-Malay ethinicity (AOR = 4.7, 95% CI: 1.23-18.38), personal barriers (AOR = 1.6, 95% CI:1.35-1.79), social barriers (AOR = 1.21, 95% CI: 1.06-1.39), and physical environment barriers (AOR = 1.468, 95% CI: 1.221-1.765). CONCLUSION: This study shows a worrying prevalence of physical inactivity among pre-retirement healthcare workers that is even higher than the general population in Malaysia. The findings highlight the importance of focusing the preventive strategies among non-Malay workers and those with lower education levels. It is also vital to address all the physical, social, and environmental barriers towards physical inactivity. By prioritising these factors, employers and stakeholders will be able to establish better workplace health promotion and address the issue of physical inactivity more efficiently.


Assuntos
Pessoal de Saúde , Comportamento Sedentário , Humanos , Malásia/epidemiologia , Estudos Transversais , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Pessoal de Saúde/estatística & dados numéricos , Pessoal de Saúde/psicologia , Inquéritos e Questionários , Exercício Físico , Prevalência , Empregados do Governo/estatística & dados numéricos
5.
Physiol Behav ; 284: 114640, 2024 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-39019133

RESUMO

The prolonged period of COVID-19 has ingrained physical inactivity as a habit, leading to a reluctance to move. This has resulted in a decline in physical fitness and the loss of a healthy body composition. While this trend is particularly noticeable among the older adults, its impact on the immune cell defense system, which is crucial for minimizing viral infections, remains unclear. This study aimed to investigate the physical fitness, body composition, cytokines and immunocytes of older adults who engaged in physical activity (PA) before the COVID-19 pandemic but had to stop it due to the lockdown. A total of 172 older adults aged 61 to 85 years participated in this study: 90 in non-PA group (NPAG, 34 men and 56 women), and 82 in PA group (PAG, 29 men and 53 women). Physical inactivity was 45.13 ± 5.67 weeks in the NPAG and 1.70 ± 0.43 weeks in the PAG. Although there was no significant difference in calorie intake, PA volume showed a significant decrease in NPGA (P < 0.001). VO2max, strength, and sit-ups decreased in NPAG, whereas they maintained or increased in PAG (Ps < 0.001). NPAG experienced an increase in fat mass (∼33.0 %), along with a decrease in muscle mass (∼10.4 %), but PAG showed slight increases (∼1.1 % vs. ∼1.5 %, Ps < 0.001). Interleukin-6 (∼38.9 %), tumor necrosis factor-α (∼38.3 %), and C-reactive protein (∼33.6 %) increased, whereas immunocytes decreased in NPAG (Ps < 0.001). In contrast, those in PAG showed the opposite phenomenon. This study indicates that even during the COVID-19 situation, maintaining active PA in the older adults helps retain beneficial physical fitness and body composition, reduces inflammatory factors, and contributes to preserving or enhancing the function of immunocytes.

8.
Artigo em Russo | MEDLINE | ID: mdl-38934959

RESUMO

The number of middle-aged and elderly population is increasing every year. At the same time, the course of most chronic diseases worsens with age, which can be explained by significant changes in body composition, including redistribution and increase of fat mass and decrease in muscle and skeletal mass. Thus, a decrease in muscle mass becomes intrinsic for the body from the age of 40 and develops on average by 0.5-1.0% per year. The prevalence of patients with sarcopenia is estimated to be between 11 and 50% in different age groups of population: middle, elderly and senile. In addition, the decline in physical activity associated with the urbanization and automation of labor exacerbates the disease at a younger age, which predicts an increase in the number of such patients in the future. OBJECTIVE: To determine the role of physical rehabilitation in sarcopenia. MATERIAL AND METHODS: A systematic review including studies found in PubMed, MedLine, Scopus and Web of Science Core Collections databases for 2019-2022 was conducted. The used enrollment criteria were the following: systematic reviews, including cross-over or cohort studies targeting at persons aged from 40 to 90 years of both sexes, with available data on sarcopenia, its severe form or other combinations of physical performance markers called sarcopenia. The mandatory parameter for inclusion in the study was the presence of the effectiveness assessment of physical rehabilitation without limiting its parameters. The systematic review was performed in accordance with the recommendations of the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) 2020. RESULTS: The best kind of training are 30-60-minute comprehensive methods with predominance of resistance exercises with minimum duration of the course of 3 months and frequency of 3 inconsistent in-person trainings per week under the supervision of a specialist for patients with sarcopenia in order to increase muscle strength and mass, as well as performance. The intensity should consist of the following parameters: start with fewer sets but more repetitions (12-15) with less intensity (55% of maximum) and move to more sets with less repetition (4-6) and greater intensity (>80% of maximum). CONCLUSION: This article describes the parameters of exercises that are most effective in terms of muscle strength and mass increase and safe for patients. The compilation and further study of this complex in practice are needed.


Assuntos
Sarcopenia , Sarcopenia/reabilitação , Sarcopenia/fisiopatologia , Humanos , Feminino , Masculino , Idoso , Pessoa de Meia-Idade , Adulto , Idoso de 80 Anos ou mais
9.
J Clin Med ; 13(12)2024 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-38930118

RESUMO

Background/Objectives: COPD patients who are frail have been reported to develop brain atrophy, but no non-invasive diagnostic tool has been developed to detect this condition. Our study aimed to explore the diagnostic utility of the Kihon Checklist (KCL), a frailty questionnaire, in assessing hippocampal volume loss in patients with COPD. Methods: We recruited 40 COPD patients and 20 healthy individuals using the KCL to assess frailty across seven structural domains. Hippocampal volumes were obtained from T1-weighted MRI images, and ROC analysis was performed to detect hippocampal atrophy. Results: Our results showed that patients with COPD had significantly greater atrophic left hippocampal volumes than healthy subjects (p < 0.05). The univariate correlation coefficient between the left hippocampal volume and KCL (1-20), which pertains to instrumental and social activities of daily living, was the largest (ρ = -0.54, p < 0.0005) among the KCL subdomains. Additionally, both KCL (1-25) and KCL (1-20) demonstrated useful diagnostic potential (93% specificity and 90% sensitivity, respectively) for identifying individuals in the lowest 25% of the left hippocampal volume (AUC = 0.82). Conclusions: Our study suggests that frailty questionnaires focusing on daily vulnerability, such as the KCL, can effectively detect hippocampal atrophy in COPD patients.

10.
Artigo em Inglês | MEDLINE | ID: mdl-38928962

RESUMO

Adolescents in resource-constrained environments face increasing sedentary lifestyles and obesity rates, necessitating effective interventions for promoting physical activity and combating non-communicable diseases. This study evaluates the impact of a 12 week Nyakaza Move-for-Health intervention on physical activity, anthropometry, cardiorespiratory fitness, and behaviour change among adolescents in KwaZulu-Natal, South Africa. One hundred twenty-eight adolescents participated, with assessments including self-reported physical activity, anthropometric indices, and cardiorespiratory fitness measures. The intervention significantly increased physical activity levels. The treatment group's mean score was 2.2 (0.4) at baseline and 2.6 (0.4) (F (14, 79) = 4.884, p = <0.001, η2 = 0.156) at the endline. The body mass index decreased (mean = 22.4 (4.6) at baseline and 21.9 (4.2) at endline; p = 0.025, partial eta squared = 0.025, η2 = 0.004). The intervention programme significantly affected the WHR (mean = 0.80 (0.10) at baseline and 0.76 (0.9) at endline; p < 0.001, partial eta squared = 0.327, η2 = 0.100) and the predicted maximal oxygen uptake (VO2 max) for the treatment group (mean = 42.4 (8.7) at baseline and mean = 43.6 (8.7) at endline; p < 0.711, partial eta squared = 0.017, η2 = 0.033). Focus group discussions indicated shifts in knowledge, attitudes, and motivation towards physical activity. Power analysis revealed strong observed power (PA: 0.983, BMI: 0.098, WHR: 0.887), indicating the robustness of the intervention's effects. These findings underscore the effectiveness of the intervention in improving physical health outcomes. It is recommended that longitudinal studies be conducted to assess the long-term sustainability and impact of such interventions on adolescents' health outcomes, thereby informing the development of comprehensive public health policies and programmes to promote physical activity and combat non-communicable diseases in similar settings.


Assuntos
Exercício Físico , Promoção da Saúde , Humanos , África do Sul , Adolescente , Feminino , Masculino , Promoção da Saúde/métodos , Aptidão Cardiorrespiratória , Índice de Massa Corporal
11.
BMC Public Health ; 24(1): 1596, 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38877471

RESUMO

BACKGROUND: The university years are a critical period for young adults, as they are more exposed to obesogenic behaviors and experience stressful situations that compromise their mental health. This study aims to estimate the prevalence of anxiety and depression symptoms and evaluate the association between the combined occurrence of obesogenic behaviors among university students. METHODS: A cross-sectional study was conducted on students from a public university in Brazil during the COVID-19 pandemic. Data were collected from July to August 2020 using an online questionnaire. The outcome variables (anxiety and depression symptoms) were assessed using the Depression, Anxiety and Stress Scale-21 (DASS-21). The co-occurrence of obesogenic behaviors was measured based on irregular consumption of fruits and vegetables, frequent consumption of ultra-processed foods, physical inactivity during leisure time, and sedentary behavior. A Venn diagram was used for the exploratory analysis. To verify the association between the outcome and explanatory variables, a directed acyclic graph model was constructed, and multivariate logistic regression was performed to calculate odds ratios (ORs) and 95% confidence intervals (95%CIs). RESULTS: A total of 1,353 students aged 18-24 years participated in this study. Symptoms of anxiety and depression were present in 46.1% and 54.6% of the participants, respectively. The most prevalent combination of obesogenic behaviors was frequent consumption of ultra-processed foods, physical inactivity during leisure time, and sedentary behavior (17.2%). The greater the number of simultaneous obesogenic behaviors, the higher the chance to present symptoms of anxiety [OR: 2.81 (95%CI: 1.77-4.46)] and depression [OR: 3.46 (95%CI: 2.20-5.43)]. CONCLUSION: These findings reinforce the need to take actions to promote mental health in the university environment in conjunction with programs to promote a healthy lifestyle and improve the physical and mental well-being of students.


Assuntos
Ansiedade , COVID-19 , Depressão , Obesidade , Estudantes , Humanos , COVID-19/epidemiologia , COVID-19/psicologia , Estudantes/psicologia , Estudantes/estatística & dados numéricos , Masculino , Universidades , Feminino , Estudos Transversais , Adulto Jovem , Adolescente , Depressão/epidemiologia , Ansiedade/epidemiologia , Brasil/epidemiologia , Obesidade/epidemiologia , Obesidade/psicologia , Comportamento Sedentário , Saúde Mental/estatística & dados numéricos , Pandemias , Prevalência , Inquéritos e Questionários
12.
Artigo em Inglês | MEDLINE | ID: mdl-38845011

RESUMO

BACKGROUND: The physical and psychological benefits of physical activity are well-known, and physical activity has been proven to be a helpful adjunct to psychotherapeutic treatment for many symptomatic disorders, including mood and anxiety disorders. The current study explores physical inactivity levels in patients with borderline personality disorder (BPD). The first aim of this study is to describe the 12-year course of physical inactivity in patients with BPD. The second aim is to examine predictors of physical inactivity, including adversity experiences, comorbid symptomatic (formerly axis I) disorders, medical disorders, and demographic factors. METHODS: Two hundred and forty-five patients with BPD were interviewed seven times over 12-years of prospective follow-up as part of the McLean Study of Adult Development (MSAD). Patients were categorized as ever-recovered (i.e., patient had experienced a symptomatic and psychosocial recovery from BPD) or never-recovered. At each follow-up, patients reported physical activity levels (minutes of exercise per week) via a semi-structured interview- the Medical History and Services Utilization Interview (MHSUI). Data was collected from June 1992 to December 2018. RESULTS: Never-recovered patients with BPD were significantly more inactive than their ever-recovered counterparts (p < 0.001). These rates of inactivity remained stable over time for both groups. Two significant multivariate predictors of inactivity were found: obesity (p = 0.003) and PTSD (p < 0.001). CONCLUSIONS: Non-recovered BPD patients are more likely to be inactive than patients who have recovered. Both clinical and medical factors appear to contribute to inactivity levels in patients with BPD.

13.
BMC Public Health ; 24(1): 1480, 2024 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-38831413

RESUMO

BACKGROUND: The World Health Organization has proposed that physical activity is a meaningful way to improve the quality of human life and reduce the probability of chronic non-communicable diseases and that humans should change their mindset from the actual effectiveness of physical activity in promoting health to the new view that "physical activity makes life more meaningful." The introduction and development of physical literacy reveal the critical role of physical activity in improving human health and the importance of human initiative in physical activity for healthy development. Therefore, the objectives of this paper are (1) to conduct a bibliometric analysis of the literature on physical literacy, assessing the scope, frequency, and geographical distribution of research publications from various countries and institutions from 2015 to 2023; (2) to visualize keywords in articles on the topic of Physical literacy to analyze whether there is a link between physical literacy and health, and (3) based on the results of the visual analysis, we propose that proper health is built on the sense of physical literacy and further construct the circular path of physical literacy, physical activity, and physical health improvement. METHODS: Using VOSviewer software v.1.6.18, this study searched the core collection of the Web of Science database from 2015 to April 15, 2023, using "physical literacy" as a keyword to explore the current international research on physical literacy. RESULTS: A total of 3,446 articles were included, and a correlation map was derived based on the co-occurrence frequency of keywords, which showed that physical literacy was highly correlated with six concepts: health literacy, physical activity, health, children, adolescents, and prevention. CONCLUSION: Based on the analysis of literature visualization techniques, there is a high correlation between physical literacy and health, and international physical literacy research is in a trend of multi-point amplification, with research hotspots gradually shifting from the field of sports to the field of health and closely related to the field of health, indicating that physical literacy aims to promote the achievement of individual health by driving humans to increase physical activity.


Assuntos
Bibliometria , Exercício Físico , Letramento em Saúde , Humanos , Letramento em Saúde/estatística & dados numéricos
14.
J Clin Nurs ; 2024 Jun 13.
Artigo em Inglês | MEDLINE | ID: mdl-38867609

RESUMO

AIMS: To investigate the prevalence of physical inactivity in older adults living in nursing homes and explore the determinants of physical inactivity by using the Capability, Opportunity, Motivation-Behaviour model. DESIGN: A multisite, cross-sectional study was performed by convenience sampling and questionnaire survey. METHODS: A total of 390 nursing home residents were recruited from three nursing homes in Southern China from May 2022 to April 2023. The participants completed a self-designed general information questionnaire, Physical Activity Scale for the Elderly, Self-Efficacy for Exercise Scale, Exercise Benefits Scale, Patient Health Questionnaire-9 and the Short Physical Performance Battery test. Descriptive statistics, univariate analysis, Spearman correlation analysis, and ordinal logistic regression were applied for data analysis. RESULTS: The prevalence of physical inactivity among the nursing home residents reached 88.46%. Ordinal logistic regression results showed that exercise self-efficacy, perceived exercise benefits, physical function, availability of physical activity instruction, having depression, number of chronic diseases and living with spouse were the main influencing determinants of physical inactivity and explained 63.7% of the variance. CONCLUSIONS: Physical inactivity was considerable in nursing home residents in China and influenced by complex factors. Tailored measures should be designed and implemented based on these factors to enhance physical activity while considering the uniqueness of Chinese culture. IMPLICATIONS FOR THE PROFESSION AND PATIENT CARE: Healthcare professionals should enhance physical activity of residents by increasing benefits understanding, boosting self-efficacy, improving physical function, alleviating depression and integrating personalized physical activity guidance into routine care services. And more attention should be paid to the residents who had more chronic diseases or did not live with spouse. IMPACT: Physical inactivity is a significant problem in nursing home residents. Understanding physical inactivity and its determinants enables the development of tailored interventions to enhance their physical activity level. REPORTING METHOD: This study was reported conforming to the STROBE statement. PATIENTS OR PUBLIC CONTRIBUTION: Nursing home residents who met the inclusion criteria were recruited.

15.
J Physiol ; 2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38878232

RESUMO

Mitochondrial dysfunctions are thought to contribute to muscle atrophy and weakness that develop during ageing and mechanical unloading caused by immobilization, bed rest and microgravity. Older adults are at greater risk of developing muscle and mitochondrial dysfunctions in response to unloading. Although exercise is well known to promote muscle and mitochondrial health, its protective effect during mechanical unloading in older adults remains largely unexplored. Here, we investigated the impact of 14 days of head-down tilt bed rest (HDBR) with and without a multimodal exercise countermeasure in older men and women (55-65 years). Leg muscle volume was assessed using magnetic resonance imaging. Biopsies of the vastus lateralis were performed to assess markers of mitochondrial content, respiration, reactive oxygen species (ROS) production and calcium retention capacity (mCRC). Indices of mitochondrial quality control (MQC), including markers of fusion (MFN1 and 2), fission (Drp1), mitophagy (Parkin) and autophagy (p62 and LC3I and II) were measured using immunoblots. Muscle cross-sections were stained for neural cell adhesion molecule (NCAM, a marker of denervation). HDBR triggered muscle atrophy, decreased mitochondrial content and respiration and increased mitochondrial ROS production. HDBR had no impact on mCRC or MQC markers but increased markers of autophagy and denervation. Exercise prevented the deleterious effects of HDBR on leg muscle volume, mitochondrial ROS production and markers of autophagy and denervation. Exercise also increased mitochondrial content and respiration without altering mCRC and MQC markers. Collectively, our results indicate that an exercise countermeasure that can be performed in bed is effective in protecting muscle and mitochondrial health during HDBR in older adults. KEY POINTS: Conditions associated with muscle unloading, such as immobilization, bed rest or microgravity, result in muscle atrophy and weakness, particularly in older adults. Mitochondrial dysfunctions are thought to contribute to muscle atrophy caused by unloading and ageing. However, whether exercise can counteract the deleterious effects of unloading in older adults remains largely unexplored. Here, we report that older adults exposed to 14 days of head-down tilt bed rest (HDBR) displayed upper leg muscle atrophy, a decrease in mitochondrial content and respiration, an increase in H2O2 emission, and an increase in autophagy and denervation markers. No impact of HDBR on mitochondrial quality control was observed. A multimodal exercise countermeasure prevented the deleterious effects of HDBR on upper leg muscle volume, mitochondrial reactive oxygen species emission, and markers of autophagy and denervation and increased mitochondrial content and respiration. These findings highlight the effectiveness of exercise in promoting muscle and mitochondrial health in older adults undergoing bed rest.

16.
BMC Public Health ; 24(1): 1592, 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38877518

RESUMO

BACKGROUND: Bengaluru, a metropolis in Southern India, is one of the largest markets for cab aggregator companies. Drivers working for these companies play a vital role in urban transportation but unlike other drivers, their work pattern is stressful, which could increase their proneness to NCD risk factors. Understanding associations between work environment adversity and NCD risk factors among these drivers will help to plan specific health promotion and NCD prevention programs including provision of basic occupational health services. OBJECTIVES: The study aims to test for an association between work environment adversity and selected Non-communicable Disease (NCD) risk factors among Application Cab Aggregator drivers in Bengaluru city and to estimate the prevalence of selected NCD risk factors among the ABCA drivers. METHODOLOGY: This cross-sectional study was conducted in Bengaluru city among 340 eligible and consenting ABCA drivers with at least one-year experience. Drivers were recruited through a multi-stage sampling procedure and time-period sampling, from transportation and leisure zones in the city. Data was collected through interviews using specifically developed semi-structured tools to assess work environment adversity and NCD risk factors. Prevalence of NCD risk factors is presented per 100 drivers with 95% confidence intervals. Multivariate Logistic regression analysis was conducted to quantify the strength of the association between work environment adversity categories and NCD risk factors. Ethical clearance was obtained from the NIMHANS Ethics Committee. RESULTS: Nearly 97% of the 340 drivers reported having one or more NCD risk factors. Working more than 5 days a week, more than 7 + hours a day, staying away from family, and working night shifts were closely associated with higher risk for NCD risk factors among ABCA drivers. Drivers with work environment adversity scores between 5 and 10 were associated with higher odds of Physical Inactivity (OR = 3.1), Unhealthy diets (OR = 1.62), and Tobacco Use (OR = 3.06). CONCLUSION: The study highlights the association between work environment adversity and NCD risk factors and indicates a dire need for NCD prevention programs, basic occupational health services, and social security provisions for ABCA cab drivers.


Assuntos
Doenças não Transmissíveis , Local de Trabalho , Humanos , Índia/epidemiologia , Estudos Transversais , Fatores de Risco , Masculino , Adulto , Local de Trabalho/psicologia , Doenças não Transmissíveis/epidemiologia , Pessoa de Meia-Idade , Feminino , Condução de Veículo/estatística & dados numéricos , Prevalência , Condições de Trabalho
17.
Am J Health Promot ; : 8901171241252526, 2024 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-38720180

RESUMO

PURPOSE: Evidence suggests that sedentary behavior is increased among those with mobility impairment, but the evidence examining the impact of social support networks (SSN) on this relationship remains limited. This study examines the relationship between SSN and sedentary behavior among adults with and without mobility impairment. DESIGN: Cross-sectional. SETTING: National Health and Nutrition Examination Survey (NHANES) 2007-2008. SUBJECTS: U.S. adults (≥40 years of age) with (n = 962) and without (n = 1393) mobility impairment. MEASURES: The Social Support Network (SSN) score was created using self-reported emotional, financial, church, friends, and marital support/status. The dependent variable in this study was the upper quartile of sedentary time in minutes. RESULTS: Both higher SSN score (AOR .43; 95% CI 0.25-.76, P = .045) and poverty to income ratio (PIR) (AOR 2.60; 95% CI 1.40-4.82, P = .01) were significant predictors of increased sedentary time among adults with mobility impairment. Among adults without mobility impairment, higher PIR was the only significant predictor of increased sedentary time (OR 3.59; 95% Cl 1.80-7.15, P < .0001). CONCLUSION: Higher SSN score was associated with significantly lower odds of increased sedentary time among adults with mobility impairment. A similar relationship was not revealed among adults without mobility impairment. Higher PIR was associated with significantly higher odds of increased sedentary time among adults with and without mobility impairment.

18.
Diabetes Res Clin Pract ; 212: 111702, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38723672

RESUMO

AIMS: To identify physical activity trajectories, explore the factors associated with them and assess their relationship with all-cause mortality. METHODS: This was a population-based longitudinal cohort study, with data from all specialist care units for type 1 diabetes in Sweden. A total of 48.921 adult patients were included, each with at least 3 registrations of physical activity, and a maximum follow-up of 14 years. The main outcomes were the longitudinal physical activity trajectories and all-cause mortality. RESULTS: Of 48.921 patients, 55.9% were males and mean (SD) age was 39.7(16.7). Four physical activity trajectories were identified: Steady Low (10.8%), Decreaser (12.7%), Increaser (20.7%) and Steady High (55.8%). Female sex, higher education, higher income, normal BMI, fewer comorbidities and foot free from diabetic disease were significantly associated with sustained high physical activity. Compared to the steady low group, the decreaser, increaser, and steady high physical activity groups exhibited lower adjusted risk of all-cause mortality (53-73% reduction). CONCLUSIONS: Consistently low physical activity is associated with higher all-cause mortality. This study underscores the importance of identifying patients at risk of low physical activity and tailoring personalized approaches to promote sustained physical activity in type 1 diabetes, ultimately improving outcomes.


Assuntos
Diabetes Mellitus Tipo 1 , Exercício Físico , Humanos , Diabetes Mellitus Tipo 1/mortalidade , Feminino , Masculino , Estudos Longitudinais , Adulto , Suécia/epidemiologia , Pessoa de Meia-Idade , Adulto Jovem
19.
BMC Nephrol ; 25(1): 178, 2024 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-38778292

RESUMO

BACKGROUND: The Low Physical Activity Questionnaire (LoPAQ) was specifically developed to measure the low activity level observed in extremely inactive hemodialysis (HD) patients. This study aims to evaluate reliability and validity of Persian version of the LoPAQ. METHODS: This study was a cross sectional study, conducted in three HD centers in Iran. The LoPAQ was translated into Persian. After cultural adaptions, it was filled out by 120 HD patiens. Convergent validity, was evaluated by calculating the correlations among the Persian version of the LoPAQ and Persian version of the Community Healthy Adults Model Program for Seniors (CHAMPS) questionnaire, physical function scale of the SF-36 and physical function (Short Physical Performance Battery (SPPB) test) using Spearman's correlation coefficients. The test-retest reliability was analyzed using the intraclass correlation coefficient (ICC). RESULTS: In total, 109 patients completed all of the questionnaires, took part in physical performance tests and had valid data. Their mean age was 64 ± 11 years, with a dialysis history of 31 ± 10 months. For total calories, there was a strong correlation between the Persian version of the LoPAQ and CHAMPS-measured physical activity (rho = 0.85, p < 0.001). In addition, the higher physical activity level reported by Persian version of the LoPAQ was also correlated with better self-reported physical function (rho = 0.7, p < 0.001) and better physical performance (rho = 0.67, p < 0.001). The ICC ranged from 0.65 to 0.78, indicating strong reliability. CONCLUSION: The assessment of the validity and reliability of the Persian version of the questionnaire confirmed its suitability for evaluating the level of physical activity. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT05930964, Registered on 05/07/2023. Registered trial name: Validity and Reliability of Persian Version of Low Physical Activity Questionnaire (LoPAQ).


Assuntos
Exercício Físico , Diálise Renal , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Transversais , Irã (Geográfico) , Reprodutibilidade dos Testes , Comportamento Sedentário , Inquéritos e Questionários , Traduções
20.
JMIR Hum Factors ; 11: e52575, 2024 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-38717810

RESUMO

BACKGROUND: More than one-third of older adults (aged ≥65 y) experience falls every year. The prevalent modifiable risk factors for falling are malnutrition and physical inactivity, among others. The involvement of older adults in the prevention of falls can decrease injuries, hospitalizations, and dependency on health care professionals. In this regard, eHealth can support older adults' self-management through more physical activity and adequate food intake. eHealth must be tailored to older adults' needs and preferences so that they can reap its full benefits. Therefore, it is necessary to gain insight into the knowledge, skills, and mindset of older adults living at home who are at risk of falls regarding eHealth. OBJECTIVE: This qualitative study aims to explore older adults' use of everyday digital services and technology and how they acquire knowledge about and manage their nutritional intake and physical activity in relation to their health. METHODS: Semistructured interviews were conducted with 15 older adults (n=9, 60% women; n=6, 40% men; age range 71-87 y) who had all experienced falls or were at risk of falling. These individuals were recruited from a geriatric outpatient clinic. The interviews were analyzed using deductive content analysis based on a modification of the Readiness and Enablement Index for Health Technology framework. RESULTS: The qualitative data showed that the informants' social networks had a positive impact on their self-management, use of technology, and mindset toward nutritional intake and physical activity. Although the informants generally lived active lives, they all lacked knowledge about how their food intake influenced their physical health, including their risk of falling. Another finding was the large diversity in the use of technology among the informants, which was related to their mindset toward technology. CONCLUSIONS: Older adults can use technology for everyday purposes, but some need additional introduction and support to be able to use it for managing their health. They also need to learn about the importance of proper nutritional intake and physical activity in preventing falls. Older adults need a more personalized introduction to technology, nutrition, and physical activity in their contact with health professionals.


Assuntos
Acidentes por Quedas , Exercício Físico , Conhecimentos, Atitudes e Prática em Saúde , Pesquisa Qualitativa , Humanos , Acidentes por Quedas/prevenção & controle , Idoso , Feminino , Masculino , Idoso de 80 Anos ou mais , Exercício Físico/psicologia , Entrevistas como Assunto , Telemedicina/métodos
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