Comparison of the Effect of Different Resistance Training Frequencies on Phase Angle and Handgrip Strength in Obese Women: a Randomized Controlled Trial.

Publisher: MDPI Country of Publication: Switzerland NLM ID: 101238455 Publication Model: Electronic Cited Medium: Internet ISSN: 1660-4601 (Electronic) Linking ISSN: 16604601 NLM ISO Abbreviation: Int J Environ Res Public Health Subsets: MEDLINE

Original Publication: Basel : MDPI, c2004-

Hand Strength* ; Obesity*/therapy ; Resistance Training*; Aged ; Body Composition ; Body Mass Index ; Female ; Humans ; Middle Aged ; Waist Circumference

Phase angle (PA) is a strong predictor of sarcopenia, fragility, and risk of mortality in obese people, while an optimal muscular function and handgrip strength (HS) are required to perform different daily activities. Although there is a general agreement that resistance training improves health status in obese people, the optimal weekly training frequency forPA and physical performance parameters is not clear.This study aimed to compare the effects of different weekly resistance training frequencies performed over a 24week exercise program on PA and HSin obese people. Forty-two women (56.2 ± 9.1 years, body mass index (BMI) 37.1 ± 4.9 kg/m ² ) were randomly allocatedto one of two groups: a group with a highweekly training frequency of three times a week (HIGH, n= 21) and a group that performed only one weekly session (LOW, n= 21). The groups trained with an identical exercise intensity and volume per session for 6 months. Before and after the intervention period, the participants were assessed for anthropometric measures, bioimpedance analysis, and HS. There was a significant group × time interaction ( p <0.05) for waist circumference, bioimpedance reactance divided by body height (Xc/H), PA, and HS measures. In addition, only the HIGH group increased Xc/H, PA, and HS after the intervention period ( p <0.05), even after adjusting for weight loss and menopausal status. Physical exercise performed three times a week promotes better adaptations in PA and HSwhen compared with the same program performed once a week in obese women.
Competing Interests: The authors declare no conflict of interest.

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Keywords: BIVA; R-Xc graph; bioimpedance; body composition

Date Created: 20200216 Date Completed: 20200918 Latest Revision: 20200918

20231215

PMC7068258

10.3390/ijerph17041163

32059579