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Exp Gerontol. 2013 Mar;48(3):326-33. doi: 10.1016/j.exger.2013.01.002. Epub 2013 Jan 17.

Differential responses of adiposity, inflammation and autonomic function to aerobic versus resistance training in older adults.

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  • 1Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Portugal. flaviacanuto@gmail.com

Abstract

BACKGROUND:

Increased body fat, autonomic dysfunction and low-grade chronic inflammation are interrelated risk factors implicated in the etiology of several chronic conditions normally presented by older adults.

OBJECTIVE:

This study aims to assess the effectiveness of different training protocols on reducing body fat, improving autonomic function, and decreasing low-grade systemic inflammation in community-dwelling elderly adults.

METHODS:

Fifty participants (11 men, 68±5.5years) were randomly allocated into resistance or aerobic training or control groups. Evaluations were done at baseline and following the 8-month intervention period on their body composition (assessed by DXA), inflammatory biomarkers (high-sensitivity C-reactive protein [hs-CRP], tumor necrosis-alpha [TNF-α], interferon-gamma [IFN-γ], interleukins-6 and -10 [IL-6, IL-10]), lipoproteic profile, fasting glycemia, blood pressure, heart rate variability (HRV; frequency and time domains) and aerobic fitness (assessed by six-minute walk distance [6MWD]). A paired t-test was used to detect changes (%Δ=[(post-test score-pretest score)/pre-test score]×100) within groups, while between-group differences were analyzed using the one-way ANOVA or General Linear Models.

RESULTS:

A significant change (Δ%) both in total (-5.4±6.3% and -3.3±2.9%, respectively) and central body fat (8.9±11.3% and -4.8±4.5%) was observed in resistance and aerobic training groups, respectively; along with a change in resting systolic and diastolic blood pressures (-9.2±9.8% and -8.5±9.6%), heart rate (-4.6±6.5%), hs-CRP (-18.6±60.6%), and 6MWD (9.5±6.9%) in response to aerobic training.

CONCLUSIONS:

The present findings provide further evidence for the benefits of aerobic and resistance training on reducing body fat. Aerobic training was demonstrated to reduce hs-CRP and blood pressure in community-dwelling elderly participants with no serious medical conditions.

Copyright © 2013 Elsevier Inc. All rights reserved.

[PubMed - indexed for MEDLINE]
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