Effects of short term elastic resistance training on muscle mass and strength in untrained older adults: a randomized clinical trial

被引：41

作者：

Martins, Wagner Rodrigues ^{[1
,2
]}

Safons, Marisete Peralta ^{[2
]}

Bottaro, Martim ^{[2
]}

Blasczyk, Juscelino Castro ^{[1
]}

Diniz, Leonardo Rios ^{[1
]}

Carlos Fonseca, Romulo Maia ^{[3
]}

Bonini-Rocha, Ana Clara ^{[1
]}

de Oliveira, Ricardo Jaco ^{[2
]}

机构：

[1] Univ Brasilia, Coll Phys Therapy, BR-72220140 Ceilancia Sul, DF, Brazil

[2] Univ Brasilia, Coll Phys Educ, BR-70904970 Brasilia, DF, Brazil

[3] Univ Fed Pernambuco, Phys Educ Dept, BR-50670901 Recife, PE, Brazil

来源：

BMC GERIATRICS | 2015年 / 15卷

关键词：

Randomized controlled trial; Resistance training; Muscle strength dynamometer; Dual-energy X-ray absorptiometry; Aging; QUALITY-OF-LIFE; BODY-COMPOSITION; TESTING PROTOCOL; EXERCISE PROGRAM; BLOOD-FLOW; KNEE; MEN; ADAPTATIONS; SARCOPENIA; IMPACT;

D O I：

10.1186/s12877-015-0101-5

中图分类号：

R592 [老年病学]; C [社会科学总论];

学科分类号：

03 ; 0303 ; 100203 ;

摘要：

Background: The current recommendations on resistance training involving older adults have reported an improvement of body composition variables. Despite this, there is a lack of knowledge on how elastic resistance training (ERT) affects the muscle mass in older adults population. The purpose of this study was to determine the effects of a short-term ERT on muscle mass of health and untrained older adults. Methods: Forty older adults were randomized into two groups of 20 individuals each: Control Group (CG = 66.2 +/- 6.6 years) and Training Group (TG = 69.1 +/- 6.3 years). TG underwent an ERT twice a week during 8 weeks and control group did not receive any specific intervention. The primary outcome was the upper and lower limbs muscle mass, measured by Dual-energy x-ray absorptiometry. The secondary outcomes were knee isokinetic peak torque (PT) at 60 degrees/s and 120 degrees/s speeds and isometric handgrip strength. A 2x2 mixed model (group [TG and CG] x time [pre and post]) analysis of variance (ANOVA) was applied to determine the effect on primary and secondary outcomes. Results: The results of the ANOVA showed no significant effects in group x time interaction for (1) upper limbs fat free mass (F [1.38] = 1.80, p = 0.19, effect size [ES] = 0.1) and for (2) lower limbs fat free mass (F [1.38] = 0.03, p = 0.88, ES = 0.02). Regarding muscle strength, the ANOVA showed no significant effects in group x time interaction for (3) PT at 60 degrees/s (F [1.38] = 0.33, p = 0.56, ES = 3.0), for (4) PT at 120 degrees/s (F [1.38] = 0.80, p = 0.38, ES = 4.1) and for handgrip strength (F [1.38] = 0.65, p = 0.42-value, ES = 0.9). Analysis of PT in TG showed a significant change of 4.5 %, but only at 120 degrees/s (p = 0.01) when comparing pre and post-training (time interaction). Conclusions: Eight weeks of ERT did not show significant changes in muscle mass and strength of untrained older adults.

引用

页码：1 / 10

页数：10

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