Correlations between resistance training-induced changes on phase angle and biochemical markers in older women

The aim of this study was to analyze the association between muscle quality index (MQI) and phase angle (PhA) after a program of progressive resistance training (RT) in older women. Sixty-six older women with previous RT experience (68.8 ± 4.6 years, 156.6 ± 5.3 cm, 66.0 ± 13.0 kg, and 26.7 ± 4.6 kg/m2) underwent 12 weeks of RT (3 ×/week, eight exercises, and 10–15 repetition maximum). Anthropometry, muscular strength (one-repetition maximum tests), and body composition (dual-energy X-ray absorptiometry and spectral bioimpedance) were measured pre- and posttraining. There were observed significant increases for PhA, MQI, muscular strength, muscle mass, and reactance, whereas no significant changes in body fat and resistance were found. A significant correlation was observed between the RT-induced relative changes in PhA and MQI (r = .620). We conclude that improvements in MQI induced by RT are associated with increases in PhA. Therefore, PhA may be a valid tool to track changes in MQI after 12 weeks of RT in older women.

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Effects of Single Set Resistance Training With Different Frequencies on a Cellular Health Indicator in Older Women

Journal of Aging and Physical Activity ◽

10.1123/japa.2017-0258 ◽

2018 ◽

Vol 26 (4) ◽

pp. 537-543 ◽

Cited By ~ 11

Author(s):

Alex S. Ribeiro ◽

Matheus A. Nascimento ◽

Brad J. Schoenfeld ◽

João Pedro Nunes ◽

Andreo F. Aguiar ◽

...

Keyword(s):

Resistance Training ◽

Older Women ◽

Phase Angle ◽

Total Body Water ◽

Whole Body ◽

Bioimpedance Spectroscopy ◽

Health Indicator ◽

Significant Difference ◽

Total Body ◽

Single Set

The main purpose of this study was to compare the effects of resistance training (RT) performed two versus three times per week on phase angle (a cellular health indicator) in older women. A total of 39 women (69.1 ± 5.5 years) were randomly assigned to perform a RT program two (G2X) or three (G3X) days per week for 12 weeks. The RT was a whole-body program (eight exercises, one set, 10–15 repetitions). Phase angle, resistance, reactance, and total body water were assessed by bioimpedance spectroscopy. Intracellular water, reactance, and phase angle increased significantly in G2X (2.1%, 3.0%, and 5.6%, respectively) and G3X (5.0%, 6.9%, and 10.3%, respectively) from pretraining to posttraining, with no significant difference between groups. Bioimpedance resistance decreased similarly in both groups (G2X = −1.7% vs. G3X = −3.2%). We conclude that a single set RT program with a frequency of 2 days per week may be sufficient to promote an improvement in cellular health in older women.

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Resistance training prescription with different load-management methods improves phase angle in older women

European Journal of Sport Science ◽

10.1080/17461391.2017.1310932 ◽

2017 ◽

Vol 17 (7) ◽

pp. 913-921 ◽

Cited By ~ 15

Author(s):

Alex S. Ribeiro ◽

Brad J. Schoenfeld ◽

Mariana F. Souza ◽

Crisieli M. Tomeleri ◽

Analiza M. Silva ◽

...

Keyword(s):

Resistance Training ◽

Older Women ◽

Phase Angle ◽

Load Management

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Water-based resistance training program with isolated concentric action improves physical functional capacity and muscular strength in older women

Sport Sciences for Health ◽

10.1007/s11332-021-00816-w ◽

2021 ◽

Author(s):

Ana Victoria Costa Freitas ◽

Inês Amanda Streit ◽

Josefina Bertoli ◽

Kayth Andrade Nascimento ◽

Maria Carolina Oliveira de Sá ◽

...

Keyword(s):

Resistance Training ◽

Training Program ◽

Older Women ◽

Functional Capacity ◽

Muscular Strength ◽

Resistance Training Program ◽

Water Based

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

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17041163 ◽

2020 ◽

Vol 17 (4) ◽

pp. 1163 ◽

Cited By ~ 10

Author(s):

Stefania Toselli ◽

Georgian Badicu ◽

Laura Bragonzoni ◽

Federico Spiga ◽

Paolo Mazzuca ◽

...

Keyword(s):

Resistance Training ◽

Phase Angle ◽

Handgrip Strength ◽

Menopausal Status ◽

Obese Women ◽

Intervention Period ◽

Obese People ◽

Significant Group ◽

Weekly Training ◽

Training Frequency

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 for PA and physical performance parameters is not clear. This study aimed to compare the effects of different weekly resistance training frequencies performed over a 24 week exercise program on PA and HS in obese people. Forty-two women (56.2 ± 9.1 years, body mass index (BMI) 37.1 ± 4.9 kg/m2) were randomly allocated to one of two groups: a group with a high weekly 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 HS when compared with the same program performed once a week in obese women.

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