scholarly journals Effects of Exercise Training on Fat Loss and Lean Mass Gain in Mexican-American and Korean Premenopausal Women

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Shenghui Wu ◽  
Kyung-Shin Park ◽  
Joseph B. McCormick

We investigated the effect of exercise training on body composition change in women. Nineteen Mexican-American and 18 Korean premenopausal overweight/obese women were randomized into one of the following groups: control, low-intensity training group (LI), and high-intensity training group (HI). Subjects completed 12 weeks of training at 50–56% maximal oxygen consumption (LI) or 65–70% maximal oxygen consumption (HI). Body composition components were measured at baseline and after training using dual-energy X-ray absorptiometry for Mexican-Americans, while whole-body composition was measured by the direct segmental multifrequency bioelectrical impedance analysis and abdominal fat was measured by single-slice computed tomography for Koreans. Data were analyzed using mixed-model repeated measures independent of age, ethnicity, and body mass index (BMI). Exercise training showed a significant effect on BMI, fat percentage, fat mass, lean mass, and visceral adipose tissue area. HI significantly decreased fat mass and fat percentage but increased lean mass (all P<0.05). LI significantly reduced BMI, fat mass, fat percentage, and visceral adipose tissue area but increased lean mass (all P<0.05). Exercise training had a beneficial effect on reducing BMI, fat percentage, fat mass, and visceral adipose tissue area but had no effect on increasing lean mass for Mexican-American and Korean premenopausal overweight/obese women.

2020 ◽  
Vol 41 (04) ◽  
pp. 242-247
Author(s):  
Christiana J. Raymond-Pope ◽  
Anna L. Solfest ◽  
Aaron Carbuhn ◽  
Philip R. Stanforth ◽  
Jonathan Oliver ◽  
...  

AbstractThis study aimed to examine body composition using dual X-ray absorptiometry (DXA) in male and female NCAA Division I collegiate basketball athletes. Two-hundred ten (male [M]/female [F]=88/122) basketball athletes’ total and regional fat mass, lean mass, bone mineral density, and visceral adipose tissue were measured. Athletes were classified as: point guards (M/F=27/34), shooting guards (M/F=18/27), small forwards (M/F=13/18), power forwards (M/F=21/27), and centers (M/F=9/16). ANOVA and Tukey’s HSD assessed positional differences by sex. In males, centers and power forwards had greater total fat mass (p<0.025), lean mass (p≤0.001), and visceral adipose tissue (p<0.001) than other positions. Male centers had greater arm and leg fat mass and lean mass than point guards, shooting guards, and small forwards (p≤0.049), and greater arm bone mineral density than point guards (p=0.015). In females, centers had greater total fat mass (p<0.001) vs. other positions and greater total lean mass, arm fat and lean masses, arm and leg bone mineral density, and visceral adipose tissue vs. point guards and shooting guards (p≤0.005). Female point guards had lower total bone mineral density than power forwards (p=0.008). In conclusion, these sex- and position-specific total and regional body composition measurements in collegiate basketball players provide population-specific normative data.


Author(s):  
Julie A. Côté ◽  
Julie Lessard ◽  
Jacques Mailloux ◽  
Philippe Laberge ◽  
Caroline Rhéaume ◽  
...  

AbstractThe association between circulating androgen levels and fat distribution in women has been widely inconsistent among existing studies.We sought to investigate the relation between plasma adrenal and gonadal androgen levels and body fat distribution, as well as abdominal adipocyte characteristics.Paired omental and subcutaneous adipose tissue samples were surgically obtained from 60 women (age, 47±5 years; body mass index, 26±5 kg/mSignificant negative associations were found between plasma dihydrotestosterone (DHT) levels and total adiposity (body mass index, r=–0.35, p<0.05; fat mass, r=–0.31, p<0.05) as well as computed tomography assessments of abdominal adiposity (r=–0.30, p<0.05 and r=–0.44, p<0.005 for subcutaneous and visceral adipose tissue area, respectively). The association between DHT levels and visceral adipose tissue area was independent of total body fat mass. A significant negative association was also observed between plasma DHT and omental adipocyte diameter (r=–0.27, p<0.05). When expressed as the omental/subcutaneous ratio, heparin-releasable lipoprotein lipase activity was negatively and significantly related to plasma DHT, androstenedione, and dehydroepiandrosterone (DHEA) levels.Abdominally obese women with large, metabolically active omental adipocytes appear to be characterized by reduced endogenous levels of DHT. The assumption that high androgen levels are associated with an android body fat distribution pattern in women should be critically re-examined.


2021 ◽  
Author(s):  
Clara Gasparri ◽  
Simone Perna ◽  
Gabriella Peroni ◽  
Antonella Riva ◽  
Giovanna Petrangolini ◽  
...  

Abstract Purpose Since obesity is a pathology characterized by a complex variable clinical presentation with comorbidities, multidisciplinary residential program (MRP) represents one of the best options for treating obesity. The purpose of this study was to evaluate the effectiveness of 8-weeks MRP on weight loss, body composition assessed by DXA and metabolic blood parameters between entry (T0) and discharge (T1). The secondary endpoint was the evaluation of the patients' adherence to diet during the check-up outpatient visits, at 2 (T2), 6 (T3) and 12 (T4) months after discharge. Methods One hundred and seventy-eight subjects were enrolled (61 males and 117 females, aged 58.5±13, BMI 41.3±6). The difference in values ​​(end of hospitalization compared to baseline) was calculated through the univariate GLM procedure, which provides regression analysis and analysis of variance for a variable dependent on one or more variables. Results There was a statistically significant (p<0.001) improvement of all parameters investigated: total mass (-5.68 kg), fat free mass (-1236.03 g), fat mass (-4416.85 g), fat mass index (-1724.56), visceral adipose tissue (-332.76 g), arm circumference (-1.63 cm) and calf circumference (-1.16 cm). The skeletal muscle index was not affected. Statistically significant improvement in glycaemic and lipid profile were reported. The BMI average reduction continued from discharge until T4. No statistically significant changes in fat free mass and visceral adipose tissue (VAT) were reported during a year of follow-up. Conclusion The present study demonstrated the clinical benefits of 8-weeks MRP, which includes hypocaloric diet, physical exercise, and psychological support.


2019 ◽  
Vol 40 (06) ◽  
pp. 404-408 ◽  
Author(s):  
Olivia H. Dengel ◽  
Christiana J. Raymond-Pope ◽  
Tyler A. Bosch ◽  
Jonathan M. Oliver ◽  
Donald R. Dengel

AbstractTo examine measures of total and regional body composition using dual X-ray absorptiometry (DXA) in NCAA Division I collegiate equestrian athletes, 31 female collegiate equestrian athletes were matched to a population of normal controls by age and body mass index. Total and regional fat tissue mass (FM), lean tissue mass (LM), bone mineral density (BMD), and abdominal visceral adipose tissue (VAT) were measured by DXA. Equestrian athletes had a significantly (p=0.03) lower total body fat percentage (%fat) than controls. There were no significant differences in total LM and VAT between equestrian athletes and controls. However, equestrian athletes, when compared to the controls, had significantly lower leg %fat, leg FM and higher leg LM. The greater leg LM in equestrian riders resulted in a smaller upper to lower body LM ratio compared to controls. There was no difference in leg BMD between equestrian athletes and controls. There were no significant differences between the 2 styles of riding (i. e., hunt seat and western style) in regards to body composition. The lower total %fat in equestrian athletes seems to be influenced by differences in leg composition, with equestrian athletes having significantly more LM and less FM.


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