scholarly journals OXYGEN UPTAKE AND INDICATORS OF OBESITY: META-ANALYSIS INCLUDING 17,604 ADOLESCENTS

2021 ◽  
Vol 27 (6) ◽  
pp. 621-626
Author(s):  
Eliane Cristina de Andrade Gonçalves ◽  
Ricardo Fernandes ◽  
Carlos Alencar Souza Alves Junior ◽  
Diego Augusto Santos Silva ◽  
Erasmo Benício Santos de Moraes Trindade
Keyword(s):  
Systematic Review ◽  
Body Fat ◽  
Aerobic Fitness ◽  
Meta Analysis ◽  
Negative Association ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Body Adiposity ◽  
Run Test ◽  
Shuttle Run

ABSTRACT Introduction: Low aerobic fitness levels are associated with excess body adiposity in adolescents. However, studies that have analyzed this association in adolescents have used different methods and measures to evaluate aerobic fitness, making it difficult to compare the results. Objective: To conduct a systematic review with meta-analysis of studies that have analyzed the association between aerobic fitness and anthropometric body adiposity indicators in adolescents aged 10-19 years. Methods: A systematic search was performed in May 2016, updated in March 2017, in the following electronic databases: LILACS (BIREME), Embase, MEDLINE (PubMed), Web of Science (Web of Knowledge), Scopus, and SPORTDiscus. Results: Twenty-three studies were selected. The meta-analysis indicated that as the aerobic fitness levels increased, the BMI, waist circumference and body fat percentage values of the adolescents decreased. Conclusion: There is a negative association between aerobic fitness (evaluated by measuring maximum oxygen uptake in the 20-meter Shuttle Run test) and the body fat percentage, BMI and waist circumference of adolescents and a negative association between aerobic fitness (assessed by measuring the number of laps in the 20-meter Shuttle Run test) and body fat percentage. However, caution is required in the interpretation of data due to the heterogeneity of the studies analyzed. Level of Evidence II; Systematic review of studies with level II of evidence.

The effectiveness of technology-based distance weight loss interventions on body composition in health care: a systematic review, meta-analysis and meta-regression (Preprint)

2020 ◽  
Author(s):  
Heli Lahtio
Keyword(s):  
Systematic Review ◽  
Weight Loss ◽  
Body Composition ◽  
Waist Circumference ◽  
Body Fat ◽  
Meta Analysis ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Meta Regression ◽  
Weight Loss Interventions

BACKGROUND Overweight and obesity are major problems worldwide and they lead to an increased risk for several diseases. The use of technology in the treatment of obesity is promising, but there is considerable uncertainty regarding its efficacy in the current literature. OBJECTIVE The aim of this systematic review was to study the effectiveness of technology-based distance weight loss interventions in health care on body composition in comparison to control groups that do not use technology. The aim of the meta-regression was to evaluate the factors associated with the changes in body composition outcomes in a comprehensive PICOS -framework. METHODS Studies were searched from eight databases. The inclusion criteria were developed based on the PICOS-framework (population: 18-65 years; intervention: technology-based distance weight loss interventions; comparison: control groups without technology; outcome: BMI, waist circumference or body fat percentage; study design: randomized controlled trial). Meta-analysis and meta-regression were performed. RESULTS The meta-analysis included 30 studies. The quality of the studies was moderate (7/13). A statistically significant difference was observed in BMI (MD 0.83; 95% CI 0.51 to 1.15; P < .0001), waist circumference (MD 2.45; 95% CI 1.83 to 3.07; P < .0001), and body fat percentage (MD 1.07; 95% CI 0.74 to 1.41; P < .0001) in favor of the weight loss groups using technology. According to the findings of the meta-regression, interventions with personal feedback and higher quality of the studies may have been associated with a reduction in waist circumference and lower body fat percentage. CONCLUSIONS Technology-based distance weight loss interventions significantly reduced BMI, waist circumference, and body fat percentage. Future studies should focus on the comparability of the intervention content but also on the relations between the type of technology, behavioral change models, and biopsychosocial factors. CLINICALTRIAL This systematic review is registered in Prospero (CRD42016035831).

scholarly journals Gender difference in cardiovagal baroreflex gain in humans

2001 ◽  
Vol 91 (5) ◽  
pp. 2088-2092 ◽  
Author(s):  
Stacy D. Beske ◽  
Guy E. Alvarez ◽  
Tasha P. Ballard ◽  
Kevin P. Davy
Keyword(s):  
Blood Pressure ◽  
Body Mass Index ◽  
Gender Differences ◽  
Systolic Blood Pressure ◽  
Body Fat ◽  
Aerobic Fitness ◽  
Operating Point ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Lower Systolic Blood Pressure

We tested the hypothesis that women would demonstrate lower cardiovagal baroreflex gain compared with men. If so, we further hypothesized that the lower cardiovagal baroreflex gain in women would be associated with their lower aerobic fitness and higher body fat percentage compared with men. To accomplish this, we measured cardiovagal baroreflex gain (modified Oxford technique) in sedentary, nonobese (body mass index < 25 kg/m2) men (age = 26.0 ± 2.1 yr, n = 11) and women (age = 26.9 ± 1.6 yr, n = 14). Resting R-R interval and diastolic blood pressure were similar in the two groups, but systolic blood pressure was lower ( P < 0.05) in the women. Cardiovagal baroreflex gain was significantly lower in the women compared with the men (13.3 ± 1.5 vs. 20.0 ± 2.8 ms/mmHg, P< 0.05). The lower cardiovagal baroreflex gain in the women was not related ( P > 0.05) to their lower aerobic fitness and was only marginally related to their higher body fat percentage ( r = −0.34, P < 0.05). There were no gender differences in the threshold and saturation, operating range, or operating point (all P > 0.05), although the operating point fell significantly to left (i.e., at a lower systolic blood pressure) compared with men. Therefore, the findings of this study suggest that the gain of the cardiovagal baroreflex is reduced whereas other parameters were similar in women compared with men. The mechanisms responsible for the reduced cardiovagal baroreflex gain remain unclear.

Post Exercise Change in Peak Expiratory Flow Rate and its Relation with Body Adiposity in Nepalese Settings

2020 ◽  
Vol 2 (1) ◽  
pp. 65-68
Author(s):  
Narayan Bahadur Mahotra ◽  
Vibina Aryal ◽  
Lava Shrestha ◽  
Sabita Kandel ◽  
Sait Pradhan ◽  
...  
Keyword(s):  
Body Fat ◽  
Peak Expiratory Flow ◽  
Flow Rate ◽  
Peak Expiratory Flow Rate ◽  
Step Test ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Post Exercise ◽  
Body Adiposity ◽  
Significant Difference

Background: The Queens College Step Test is used to determine aerobic fitness. Peak Expiratory Flow Rate (PEFR) is the maximum rate of forceful exhalation following full inspiration. PEFR primarily reflects bronchial airflow and depends on the voluntary effort and muscular strength of the individual. Studies that correlate ventilatory capacity with body fat percentage are rare in published literature in Nepalese settings. Body fat percentage is regarded as a better indicator of obesity recently. Hence, this study aims to find an association between post-exercise change in PEFR and body adiposity in the context of Nepal. Methods: A cross-sectional study was carried out from 20th July 2019 to 15th November in the laboratory of Clinical Physiology of Maharajgunj Medical Campus. Body fat percentage was measured by using OMRON BF 214.  Pre-exercise PEFR of each subject was recorded by using Wright’s peak flow meter. Post-exercise PEFR was also recorded after three minutes of Queen’s College step test, which is the submaximal exercise test, and change in PEFR was calculated and correlated with body fat percentage. Result: The study showed a negative correlation of change in PEFR with body fat percentage (r=-0.324; P<0.001). A significant difference (P = 0.002) was observed between different quartiles of body fat percentage. A highly significant difference (P = 0.003) was noted with the first and fourth quartiles. Conclusion: Less ventilatory adjustment in response to exercise was noted in subjects with more body fat percentage compared to those with less body fat percentage.

scholarly journals Effects of Taekwondo Training on Body Composition: A Systematic Review and Meta-Analysis

2021 ◽  
Vol 18 (21) ◽  
pp. 11550
Author(s):  
Seunghui Baek ◽  
Jong-Beom Park ◽  
Sang-Hwan Choi ◽  
Jae-Don Lee ◽  
Sang-Seok Nam
Keyword(s):  
Body Composition ◽  
Body Fat ◽  
Meta Analysis ◽  
Control Group ◽  
Body Fat Percentage ◽  
Body Fat Mass ◽  
Age Group ◽  
Inclusion Criteria ◽  
Fat Percentage ◽  
Positive Effect

Background: The purpose of this study is to investigate the effect of Taekwondo training on body composition and to evaluate the magnitude of the effect. Methods: Databases were used to select studies related to the effectiveness of Taekwondo training, and the inclusion criteria were as follows. Results: Thirty-seven studies were selected. We found statistically significant differences from the control group in weight, body mass index (BMI), waist circumference (WC), waist–hip ratio (WHR), body fat mass, body fat percentage, lean mass, and muscle mass. Also, the age group was statistically significant in control variables on weight, BMI, and body fat percentage. Conclusions: Taekwondo training had a positive effect on body composition, and these results suggest that Taekwondo training is an effective exercise method to lower obesity.

scholarly journals Pilates for Overweight or Obesity: A Meta-Analysis

2021 ◽  
Vol 12 ◽  
Author(s):  
Yi Wang ◽  
Zehua Chen ◽  
Zugui Wu ◽  
Xiangling Ye ◽  
Xuemeng Xu
Keyword(s):  
Body Weight ◽  
Body Mass ◽  
Body Fat ◽  
Data Extraction ◽  
Meta Analysis ◽  
Controlled Trials ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Randomized Controlled ◽  
Overweight Or Obesity

Background: Evidence for the efficacy of Pilates for the modulation of body weight and body composition is unclear.Objective: This meta-analysis aimed to evaluate the effects of Pilates on body weight and body composition in adults with overweight or obesity.Data Sources: The PubMed, Cochrane Library, Web of Science, China National Knowledge Infrastructure (CNKI), and EMBASE databases were systematically searched from the inception dates to 12 November 2020 for relevant randomized controlled trials (RCTs).Study Selection: Randomized controlled trials comparing Pilates with other physical exercises or without any intervention were included.Data Extraction and Synthesis: Three reviewers independently performed the data extraction and assessed study quality. The mean differences (MDs) and 95% confidence intervals (CIs) for pooled data were calculated.Main Outcomes and Measures: Outcome measures were body weight, body mass index (BMI), body fat percentage, lean body mass, and waist circumference.Results: Eleven RCTs with 393 subjects were included. This study revealed that Pilates dramatically reduces body weight (MD = −2.40, 95% CI: [−4.04, −0.77], P = 0.004, I2 = 51%), BMI (MD = −1.17, 95% CI: [−1.85, −0.50], P = 0.0006, I2 = 61%), and body fat percentage (MD = −4.22, 95% CI: [−6.44, −2.01], P = 0.0002, I2 = 88%) in adults with overweight or obesity. The reduction in body weight and body fat percentage appears to be more pronounced in studies including participants with obesity only, and the efficacy of Pilates for the improvement of body weight and BMI appears to be more evident in longer intervention duration. However, Pilates has no significant effect on waist circumference (MD = −2.65, 95% CI: [−6.84, 1.55], P = 0.22, I2 = 0%) and lean body mass (MD = −0.00, 95% CI: [−1.40, 1.40], P = 1.00, I2 = 23%).Conclusions: Pilates dramatically reduces body weight, BMI, and body fat percentage in adults with overweight or obesity. Large-scale and well-designed RCTs with improved methodology and reporting are urgently needed to further confirm these results.

scholarly journals Aptidão física relacionada ao desempenho esportivo na ginástica artística

2017 ◽  
Vol 19 (6) ◽  
pp. 743-750
Author(s):  
Carla Fabiane dos Santos Lemos ◽  
Danilo Reis dos Santos ◽  
Nara Michelle Moura Soares
Keyword(s):  
Systematic Review ◽  
Physical Education ◽  
Physical Fitness ◽  
Body Fat ◽  
Search Strategy ◽  
Body Fat Percentage ◽  
Sports Performance ◽  
Fat Percentage ◽  
Education Professionals ◽  
Starting Date

The practice of artistic gymnastics for children and adolescents develop both motor vocabulary, cognitive aspects and affective partners. The aim of the study was to analyze physical fitness characteristics related to sports performance of adolescents practicing artistic gymnastics. This study is a systematic review and used the following databases: Scielo, PubMed and SportDiscus, with no starting date and using as final cutoff the month of February 2017. The search strategy was based on the identification of the Population of adolescents practicing artistic gymnastics and outcome related to physical fitness characteristics related to sports performance, and allowed verifying how studies were evaluated. There was a predominance of studies related to anthropometric variables, such as BMI and body fat percentage (%F) of gymnasts. Based on this type of study, the information available in this study will contribute to help physical education professionals and other researchers in the field with current publications related to these aspects, according to the results of this study, particularly in the pedagogical information for coaches.

scholarly journals Adiposity and risk of prostate cancer death: a prospective analysis in UK Biobank and meta-analysis of published studies

2021 ◽  
Author(s):  
Aurora Perez-Cornago ◽  
Yashvee Dunneram ◽  
Eleanor L. Watts ◽  
Timothy J. Key ◽  
Ruth C. Travis
Keyword(s):  
Prostate Cancer ◽  
Body Fat ◽  
Meta Analysis ◽  
Body Fat Percentage ◽  
Cancer Death ◽  
Central Adiposity ◽  
Uk Biobank ◽  
Fat Percentage ◽  
Prostate Cancer Death ◽  
Total Body

AbstractIntroductionThe association of adiposity with prostate cancer specific mortality remains unclear. We examined how adiposity and its distribution relates to fatal prostate cancer by analysing data from UK Biobank, and conducting a dose-response meta-analysis to integrate existing prospective evidence. We also described the cross-sectional associations in UK Biobank of commonly used adiposity measurements with indices of adiposity estimated by imaging.Methods218,246 men from UK Biobank who were free from cancer at baseline were included and participants were followed-up via linkage to health administrative datasets. Body mass index (BMI), total body fat percentage (using bioimpedance), waist circumference (WC) and waist-to-hip ratio (WHR) were collected at recruitment. Risk of dying from prostate cancer (primary cause) by the different adiposity measurements was estimated using multivariable-adjusted Cox proportional hazards models. Results from this and other prospective cohort studies were combined in a dose-response meta-analysis.ResultsIn UK Biobank, 631 men died from prostate cancer over a mean follow-up of 11.5 years. The hazard ratios (HR) for prostate cancer death were 1.10 (95% confidence interval=1.00-1.21) per 5 kg/m2 higher BMI, 1.03 (0.96-1.11) per 5% increase in total body fat percentage, 1.09 (1.02-1.18) per 10 cm increase in WC, and 1.09 (1.02-1.16) per 0.05 increase in WHR. Our meta-analyses of prospective studies included 22,106 prostate cancer deaths for BMI, 642 for body fat percentage, 3,153 for WC and 1,611 for WHR, and the combined HRs for dying from prostate cancer for the increments above were 1.10 (1.08-1.13), 1.03 (0.96-1.11), 1.08 (1.04-1.12), and 1.07 (1.02-1.12), respectively. In up to 4,800 UK Biobank participants with magnetic resonance imaging and dual-energy X-ray absorptiometry, BMI and WC were strongly associated with imaging estimations of total and central adiposity (e.g. visceral fat, trunk fat), with associations marginally larger for WC. There might be ∼1000 fewer prostate cancer deaths per year in the UK if the mean BMI in men was reduced by 5 kg/m2.ConclusionOverall, we found that men with higher total and central adiposity had similarly higher risks of prostate cancer death, which may be biologically driven or due to differences in detection. In either case, these findings provide further reasons for men to maintain a healthy body weight.

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