Multivariate Model for Defining Changes in Maximal Physical Working Capacity of Men, Ages 25 to 70 Years

1992 ◽  
Vol 36 (2) ◽  
pp. 171-174 ◽  
Author(s):  
Andrew S. Jackson ◽  
Earl F. Beard ◽  
Larry T. Wier ◽  
J. E. Stuteville
Keyword(s):  
Physical Activity ◽  
Body Fat ◽  
Multivariate Model ◽  
Percent Body Fat ◽  
Physical Working Capacity ◽  
Working Capacity ◽  
Cross Sectional ◽  
Exercise Habits ◽  
The Cross ◽  
Over Time

The purpose of this study was to develop a multivariate model with cross-sectional data that defined the decline in VO2max over time, and cross-validate the model with longitudinal data. The cross-sectional sample consisted of 1,608 healthy men who ranged in age from 25 to 70 years. VO2max was directly measured during a maximum Bruce treadmill stress test. Regression analysis showed that the cross-sectional age and VO2max relationship was linear, r = 0.45 and the age decline in VO2max was 0.48 ml/kg/min/year. Multiple regression developed the multivariate model from age, percent body fat (%fat), self-report physical activity (SR-PA), and the interaction of SR-PA and %fat (R = 0.793). Accounting for the variance in percent body fat and exercise habits decreased the influence of age on the decline of VO2max to just −0.27 ml/kg/min/year. This showed that much of decline in maximal physical working capacity was due to physical activity level and percent body fat, not aging. The multivariate equation was applied to the data of the longitudinal sample of 156 men who had been tested twice (Mean AgeΔ = 3.1 ± 1.2 years). The correlation between the measured and estimated change in VO2max over time (ΔVO2max) was 0.75. The results of the study showed that changes in body composition and exercise habits had more of an influence on changes in maximal physical working capacity than aging. The developed model provides a useful way to quantify the changes in physical working capacity with aging.

scholarly journals HUBUNGAN KONSUMSI ASAM LEMAK OMEGA-3, AKTIVITAS FISIK DAN PERSEN LEMAK TUBUH DENGAN TINGKAT DISMENORE PADA REMAJA

2017 ◽  
Vol 6 (4) ◽  
pp. 268
Author(s):  
Famimah Famimah ◽  
Ani Margawati ◽  
Deny Yudi Fitranti
Keyword(s):  
Physical Activity ◽  
Fatty Acids ◽  
Body Fat ◽  
Rating Scale ◽  
Numerical Rating Scale ◽  
Percent Body Fat ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Cross Sectional

Background: Dysmenorrhea or menstrual pain was a gynecological complaint due to an imbalance of progesterone in the blood resulting in pain. A woman with dysmenorrhea should consume food rich in omega-3 fatty acids such as fish oil, fish (salmon, tuna, mackerel, herring), soybeans and fruits. Low fish consumption was related with severity of dysmenorrhea. In addition, physical activity and percent body fat were also associated with severity of dysmenorrhea.Objective : To determine the correlation between consumption of omega-3 fatty acids, physical activity and percent body fat to the classification of dysmenorrhea in adolescents.Methods : Cross sectional study of 90 adolescentsselected by purposive sampling. This research was conducted in SMA N 15 and SMA N 9 Semarang. Menstrual history was measured by direct interviews and level of dysmenorrhea was measured using Numerical Rating Scale Questionnaire. Omega-3 fatty acids were measured using Food Frequency Questionnaire (FFQ) and analyzed using a nutritional software program. Physical activity was measured using A short questionnaire for the measurement of habitual physical activity in epidemiological studies. Percent body fat was measured using Bioelectrical Impedance Analysis (BIA). Data were analyzed by Independent T test/Mann Whitney. Result : There were significant correlation in omega-3 fatty acid (p= 0,015), and percent body fat (p= 0,026). While in physical activity there was no significant correlation (p= 0,394).Conclusion : Consumption of omega-3 fatty acids and percent body fat were associated with the classification of dysmenorrhea.

scholarly journals Correlation between Height And Percent Body Fat with Musculoskeletal Fitness at Adolesence

2019 ◽  
Vol 3 (1) ◽  
pp. 30
Author(s):  
Kamilia Rahmayanti ◽  
Trini Sudiarti
Keyword(s):  
Physical Activity ◽  
Socioeconomic Status ◽  
Body Weight ◽  
Body Fat ◽  
Significant Relationship ◽  
Percent Body Fat ◽  
Cross Sectional ◽  
Global Physical Activity Questionnaire ◽  
Nutrients Intake ◽  
Cross Sectional Design

<em>This study aims to determine the relationship between energy and nutrients intake, body weight, height, BMI-for-Age, percent body fat, physical activity, and socioeconomic status with musculoskeletal fitness. This study used a cross-sectional design. A total of 151 students from </em>5<em> Bekasi High School class X and XI were included in this study. Food intake was measured using 2x24 hours food recall, physical activity using Global Physical Activity Questionnaire (GPAQ), </em><em>anthropometri by direct measurement, and socioeconomic using Family Affluence Scale (FAS) questionnaire. Regression analysis for bivariate and Anova for analysis of socioeconomic status.  The results of this study showed that there were a significant relationship between energy (p=0,001) and nutrients intake (carbohydrate p=0,037; protein (p=0,001; fat (p=0,001), body weight (p=0,002), height (p=0,001), percent body fat (p=0,001), and physical activity (p=0,001) with musculoskeletal fitness before controlled by sex. After stratification analysis by sex, there was a significant relationship between height and percent body fat with musculoskeletal fitness(p&lt;0,005), but only found in male students.</em>

scholarly journals Social and family factors as determinants of exercise habits in Japanese elementary school children: a cross-sectional study from the Super Shokuiku School Project

2020 ◽  
Vol 25 (1) ◽  
Author(s):  
Satomi Sawa ◽  
Michikazu Sekine ◽  
Masaaki Yamada ◽  
Yugo Fukazawa ◽  
Yusuke Hiraku
Keyword(s):  
Physical Activity ◽  
Social Background ◽  
Cross Sectional Study ◽  
Family Factors ◽  
Parental Communication ◽  
School Life ◽  
Cross Sectional ◽  
Exercise Habits ◽  
School Project ◽  
The Relationship

Abstract Background Many studies have already reported on the relationship between exercise habits and health among schoolchildren. However, few have examined social and/or family factors as determinants of exercise habits. Methods This study’s participants included 1721 schoolchildren aged between 6 and 13 who were involved in the Super Shokuiku School Project in January 2016. A survey was conducted to assess gender, grade level, physical activity, lifestyle, overall health, enrichment of school life, social background, and parental lifestyles. Both dislike and lack of physical activity were used to measure poor exercise habits; correlates were analyzed using logistic regression. Results “Lack of close friends” had the strongest links with both dislike (adjusted odds ratio [OR] 5.30; 95% confidence interval [CI], 2.78–10.1) and lack of (adjusted OR 5.40; 95% CI, 2.81–10.4) physical activity. Further, children who engaged in long periods of screen time and lacked parental communication also tended to dislike and lack physical activity. Children with mothers who were unemployed (housewives) and had unhealthy lifestyles, as well as those with poor health, were also more likely to lack physical activity. Conclusion Social and family factors (e.g., having close friends) may be determinants of exercise habits among schoolchildren, independent of their own lifestyle factors. Although a longitudinal study is needed to determine causality, substantial attention may thus be required to these factors when promoting physical activity in children.

scholarly journals The Trp64Arg Polymorphism of the β3-Adrenergic Receptor Gene Is Not Associated with Body Weight or Body Mass Index in Japanese: A Longitudinal Analysis

2003 ◽  
Vol 88 (12) ◽  
pp. 5914-5920 ◽  
Author(s):  
Yumi Matsushita ◽  
Tetsuji Yokoyama ◽  
Nobuo Yoshiike ◽  
Yasuhiro Matsumura ◽  
Chigusa Date ◽  
...  
Keyword(s):  
Physical Activity ◽  
Body Mass Index ◽  
Body Weight ◽  
Energy Intake ◽  
Body Mass ◽  
Longitudinal Analysis ◽  
Adrenergic Receptor ◽  
Cross Sectional ◽  
Genotype Frequencies ◽  
The Cross

Abstract The β3-adrenergic receptor (ADRB3) is expressed mainly in visceral adipose tissue and is thought to contribute to lipolysis and the delivery of free fatty acids to the portal vein. Although many studies have examined the relationship between the Trp64Arg mutation of ADRB3 and obesity, the results have been inconsistent. We examined the cross-sectional relationship of ADRB3 variants with indexes of obesity, and their longitudinal changes over 10 yr, in men and women, aged 40–69 yr, who were randomly selected from the Japanese rural population. The study considered both dietary energy intake and physical activity levels. Among the 746 participants, the genotype frequencies of the Trp64Trp, Trp64Arg, and Arg64Arg variants were 483, 224, and 39, respectively. The cross-sectional analysis showed no significant differences in height, weight, body mass index, blood pressure, serum total and high density lipoprotein cholesterols, and hemoglobin A1c among the genotype groups even after adjustments for gender, age, smoking, alcohol drinking, physical activity, and energy intake. No significant differences in the weight changes between the genotype groups were evident in the longitudinal analysis. We conclude that the Trp64Arg mutation of ADRB3 has little or no influence on either body weight or body mass index in the general Japanese population.

scholarly journals Simultaneous presence of excess weight and insufficient hours of sleep in adolescents: prevalence and related factors

2017 ◽  
Vol 27 (2) ◽  
pp. 148
Author(s):  
Tiago Rodrigues de Lima ◽  
Gabriel Renaldo de Sousa ◽  
João Antônio Chula de Castro ◽  
Diego Augusto Santos Silva
Keyword(s):  
Physical Activity ◽  
Sedentary Behaviour ◽  
Body Fat ◽  
School Environment ◽  
Paediatric Population ◽  
Health Problems ◽  
Related Factors ◽  
Cross Sectional ◽  
Insufficient Sleep ◽  
School Based

Introduction: An increase in excess body fat and a decrease in the number of hours of sleep per day are health problems affecting the paediatric population. Objective: To estimate the combined prevalence of overweight and insufficient sleep/day in adolescents, and the association with sociodemographic characteristics, physical activity and sedentary behaviour. Methods: A cross-sectional school-based study was conducted with 1,132 participants from 14 to 19 years old in São José, Santa Catarina, Brazil. Body fat was assessed by body mass index (BMI) and classified by the Z-score, while adolescents reported the total hours of sleep/day. Sociodemographic data, physical activity and sedentary behaviour were collected by self-filled questionnaire. Results: The simultaneous prevalence of overweight and insufficient sleep/day was 17.5%. The factors associated with this condition were to meet the recommendations of the practice of physical activity per week, participate in gym class twice/week and period greater/equal to four hours/day in front of the screen. Conclusion: Guidelines in the school environment in relation to health problems posed by weight excess and the amount of insufficient hours sleep can be present when recommendations on physical activity and sedentary behaviour are given to students.

scholarly journals The Relationship between Body Composition, Dietary Intake, Physical Activity, and Pulmonary Status in Adolescents and Adults with Cystic Fibrosis

Nutrients ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 310
Author(s):  
Kevin J. Scully ◽  
Laura T. Jay ◽  
Steven Freedman ◽  
Gregory S. Sawicki ◽  
Ahmet Uluer ◽  
...  
Keyword(s):  
Physical Activity ◽  
Cystic Fibrosis ◽  
Body Composition ◽  
Dietary Intake ◽  
Healthy Volunteers ◽  
Clinical Outcomes ◽  
Body Fat ◽  
Lean Mass ◽  
Cross Sectional ◽  
Adolescents And Adults

Measures of body fat and lean mass may better predict important clinical outcomes in patients with cystic fibrosis (CF) than body mass index (BMI). Little is known about how diet quality and exercise may impact body composition in these patients. Dual X-ray absorptiometry (DXA) body composition, 24-h dietary recall, and physical activity were assessed in a cross-sectional analysis of 38 adolescents and adults with CF and 19 age-, race-, and gender-matched healthy volunteers. Compared with the healthy volunteers, participants with CF had a lower appendicular lean mass index (ALMI), despite no observed difference in BMI, and their diets consisted of higher glycemic index foods with a greater proportion of calories from fat and a lower proportion of calories from protein. In participants with CF, pulmonary function positively correlated with measures of lean mass, particularly ALMI, and negatively correlated with multiple measures of body fat after controlling for age, gender, and BMI. Higher physical activity levels were associated with greater ALMI and lower body fat. In conclusion, body composition measures, particularly ALMI, may better predict key clinical outcomes in individuals with CF than BMI. Future longitudinal studies analyzing the effect of dietary intake and exercise on body composition and CF-specific clinical outcomes are needed.

scholarly journals Eating Behavior, Stress, and Adiposity: Discordance Between Perception and Physiology

2018 ◽  
Vol 20 (5) ◽  
pp. 531-540 ◽  
Author(s):  
Paule V. Joseph ◽  
Hannah R. Davidson ◽  
Christina M. Boulineaux ◽  
Nicolaas H. Fourie ◽  
Alexis T. Franks ◽  
...  
Keyword(s):  
Eating Behavior ◽  
Body Fat ◽  
Perceived Stress ◽  
Physiological Stress ◽  
Descriptive Analysis ◽  
Principal Component ◽  
Serum Cortisol ◽  
Percent Body Fat ◽  
Clinical Markers ◽  
Cross Sectional

The purpose of the study was to examine the interrelationships among stress, eating behavior, and adiposity in a cohort of normal- and overweight individuals. Clinical markers of physiological stress (fasting serum cortisol) and adiposity (body mass index [BMI] and percent body fat) were obtained from participants selected for a natural history protocol ( n = 107). Self-reported data on eating behavior (using the Three-Factor Eating Questionnaire subscales such as Cognitive Restraint, Disinhibition, and Hunger) and psychological stress (via the Perceived Stress Scale) were evaluated. Demographic information was incorporated using principal component analysis, which revealed sex- and weight-based differences in stress, adiposity, and eating behavior measures. Following a cross-sectional and descriptive analysis, significant correlations were found between the Disinhibition and Hunger eating behavior subscales and measures of adiposity including BMI ( r = .30, p = .002 and r = .20, p = .036, respectively) and percent body fat ( r = .43, p = .000 and r = .22, p = .022, respectively). Relationships between stress measures and eating behavior were also evident in the analysis. Disinhibition and Hunger correlated positively with perceived stress ( r = .32, p .001 and r = .26, p = .008, respectively). However, Disinhibition varied inversely with serum cortisol levels ( r = −.25, p = .009). Future studies are warranted to better understand this paradox underlying the effects of perceived and physiological stress on eating behavior.

Abstract MP028: Physical Activity Relates to Lower Visceral Adiposity in Children and Adolescents

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Amanda E Staiano ◽  
Stephanie T Broyles ◽  
Alok K Gupta ◽  
Peter T Katzmarzyk
Keyword(s):  
Physical Activity ◽  
Adipose Tissue ◽  
Children And Adolescents ◽  
Body Fat ◽  
Vigorous Physical Activity ◽  
Regular Physical Activity ◽  
Self Report ◽  
Percent Body Fat ◽  
Lower Body ◽  
Body Fat Percent

Introduction: Expansion of visceral adipose tissue (VAT) associates with adverse metabolic changes. While regular moderate-to-vigorous activity is associated with lower total body fat in children and adolescents, it is unknown how physical activity relates to other adiposity indices, including VAT. Hypothesis: We hypothesized that regular physical activity in children and adolescents associates with lower body fat, percent body fat, abdominal subcutaneous adipose tissue (SAT), and VAT. Methods: The sample included 393 boys and girls aged 5–18 years (45.6% White, 50.6% African American, and 3.8% Other). Body fat and percent body fat were measured by dual-energy x-ray absorptiometry. Abdominal SAT and VAT mass were measured by magnetic resonance imaging between the highest point of the liver and the lower pole of the right kidney (using 5 to 8 cross-sectional slices, 4.76 cm apart). Participants were categorized as being regularly active by self-report: moderate-to-vigorous physical activity of ≥ 60 minutes/day, ≥ 4 days/week. Those who were physically active fewer than 4 days/week were categorized as not regularly active. Results: In this sample of children and adolescents, 45.6% of participants were regularly active. One-way ANCOVAs adjusted for age and sex demonstrated that regularly active youth had significantly less body fat (p<0.01) and lower percent body fat (p<0.01) than those who were not regularly active. One-way ANCOVAs adjusted for age, gender, and body fat, revealed that regularly active children and adolescents had no difference in SAT but had significantly lower amounts of VAT (p<0.05) when compared to those who were not regularly active. Conclusion: Engagement in moderate-to-vigorous physical activity for at least 60 minutes on four or more days of the week in children and adolescents was related to lower body fat, percent body fat and VAT, when compared to those youth who were less active. The promotion of regular physical activity has significant public health implications for body fat accumulation and for controlling excess VAT during childhood and adolescence.

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