Comparison of 2 Weekly Frequencies of Resistance Training on Muscular Strength, Body Composition, and Metabolic Biomarkers in Resistance-Trained Older Women: Effects of Detraining and Retraining

Abstract

Comparison of 2 weekly frequencies of resistance training on muscular strength, body composition, and metabolic biomarkers in resistance-trained older women: Effects of detraining and retraining. J Strength Cond Res 36(5): 1437-1444, 2022-This study aimed to compare the effects of 2 weekly frequencies of resistance training (RT) on muscular strength, body composition, and metabolic biomarkers in previously resistance-trained older women after detraining and retraining. Forty subjects (.60 years) performed RT (8 exercises, 1 set of 10-15 repetitions maximum) 2 (G2x) or 3 (G3x) times per week over 12 weeks of training and retraining. After training, subjects were detrained for 12 weeks. After detraining, there were significant decreases (p , 0.05) in upper-body (;12%) and lower-body (;14%) muscular strength, fat-free mass (FFM) (;2%), and testosterone (;26%), whereas increases were revealed for fat mass (FM) (;4%), relative body fat (;3%), fasting glucose (;8%), low-density lipoprotein cholesterol (LDL-C) (;21%), and triglycerides (;24%), with no differences between groups (p . 0.05). Following retraining, there were significant increases (p , 0.05) for upper (;7%) and lower (;10%) muscular strength, FFM (;2%), and testosterone (;20%). In contrast, decreases were found for FM (;7%), relative body fat (;3%), fasting glucose (;6%), LDL-C (;14%), and triglycerides (;21%), also with no differences between groups (p . 0.05). Gains after retraining were lower than after training (p , 0.05) only for upper-and lower-body muscular strength (;6%) and testosterone (;11%). Total cholesterol, high-density lipoprotein cholesterol, IGF-1, and C-reactive protein did not change at any point in the study for either group (p . 0.05). Our results suggest that older women can regain previous RT program benefits following detraining, regardless of the weekly training frequency. However, some fitness components may take longer to reestablish than the initial training level.

Multicomponent Exercise Program for Improvement of Functional Capacity and Lipidic Profile of Older Women with High Cholesterol and High Triglycerides

“…Although exercise research on older women has been valuable and an important factor in promoting exercise in the public health domain [16] and reducing inactivity and detraining periods (DP) [2,3,17], it is still unclear what are the effects of exercise and detraining periods (DP) on metabolic health and functional capacity of older women with chronic health conditions such as dyslipidemia [13]. Therefore, assessment of exercise and detraining effects in older women is an important area to understand [1][2][3], and it is more important in specific elderly population with dyslipidemia.…”

Effect of combined aerobic–resistance training and subsequent detraining on brain‐derived neurotrophic factor (BDNF) and depression in women with type 2 diabetes mellitus: A randomized controlled trial

“…After 8 weeks of detraining, PBF increased but it was still higher than the baseline levels. Nascimento et al 25 reported significant increases in fasting glucose (8%), relative to body fat (3%) and fat mass (FM) (4%), after 12 weeks of detraining in trained older women without diabetes. However, in their study, the changes were reversed following the retraining period.…”

The Effects of Different Exercise Intensities on the Static and Dynamic Balance of Older Adults: A randomised Controlled Trial

“…RT can produce benefits in strength and balance performance, According to World Health Organization, older adults should participate in moderate intensity activities for minimum 150 minutes in a week and also, they should be involved in a strength resistance activities 2 or more days in a week (WHO, 2010). The Positive effects of RT has been reported by (Amarante et al, 2020) even after detraining the older women can regain the RT program benefits and (Marques, Figueiredo, Harris, Wanderley, Carvalho, 2017) reported that there was a significant improvement after RT training in old women. But the distribution of the training intensities must be carefully investigated and planned.…”