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Open Access 01-10-2015 | Systematic Review

Meta-Analyses of the Effects of Habitual Running on Indices of Health in Physically Inactive Adults

Authors: Luiz Carlos Hespanhol Junior, Julian David Pillay, Willem van Mechelen, Evert Verhagen

Published in: Sports Medicine | Issue 10/2015

Abstract

Background

In order to implement running to promote physical activity, it is essential to quantify the extent to which running improves health.

Objective

The aim was to summarise the literature on the effects of endurance running on biomedical indices of health in physically inactive adults.

Data Sources

Electronic searches were conducted in October 2014 on PubMed, Embase, CINAHL, SPORTDiscus, PEDro, the Cochrane Library and LILACS, with no limits of date and language of publication.

Study Selection

Randomised controlled trials (with a minimum of 8 weeks of running training) that included physically inactive but healthy adults (18–65 years) were selected. The studies needed to compare intervention (i.e. endurance running) and control (i.e. no intervention) groups.

Study Appraisal and Synthesis Methods

Two authors evaluated study eligibility, extracted data, and assessed risk of bias; a third author resolved any uncertainties. Random-effects meta-analyses were performed to summarise the estimates for length of training and sex. A dose-response analysis was performed with random-effects meta-regression in order to investigate the relationship between running characteristics and effect sizes.

Results

After screening 22,380 records, 49 articles were included, of which 35 were used to combine data on ten biomedical indices of health. On average the running programs were composed of 3.7 ± 0.9 sessions/week, 2.3 ± 1.0 h/week, 14.4 ± 5.4 km/week, at 60–90 % of the maximum heart rate, and lasted 21.5 ± 16.8 weeks. After 1 year of training, running was effective in reducing body mass by 3.3 kg [95 % confidence interval (CI) 4.1–2.5], body fat by 2.7 % (95 % CI 5.1–0.2), resting heart rate by 6.7 min⁻¹ (95 % CI 10.3–3.0) and triglycerides by 16.9 mg dl⁻¹ (95 % CI 28.1–5.6). Also, running significantly increased maximal oxygen uptake (VO_2max) by 7.1 ml min⁻¹ kg⁻¹ (95 % CI 5.0–9.1) and high-density lipoprotein (HDL) cholesterol by 3.3 mg dl⁻¹ (95 % CI 1.2–5.4). No significant effect was found for lean body mass, body mass index, total cholesterol and low-density lipoprotein cholesterol after 1 year of training. In the dose-response analysis, larger effect sizes were found for longer length of training.

Limitations

It was only possible to combine the data of ten out the 161 outcome measures identified. Lack of information on training characteristics precluded a multivariate model in the dose-response analysis.

Conclusions

Endurance running was effective in providing substantial beneficial effects on body mass, body fat, resting heart rate, VO_2max, triglycerides and HDL cholesterol in physically inactive adults. The longer the length of training, the larger the achieved health benefits. Clinicians and health authorities can use this information to advise individuals to run, and to support policies towards investing in running programs.

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Title: Meta-Analyses of the Effects of Habitual Running on Indices of Health in Physically Inactive Adults
Authors: Luiz Carlos Hespanhol Junior
Julian David Pillay
Willem van Mechelen
Evert Verhagen
Publication date: 01-10-2015
Publisher: Springer International Publishing
Published in: Sports Medicine / Issue 10/2015
Print ISSN: 0112-1642
Electronic ISSN: 1179-2035
DOI: https://doi.org/10.1007/s40279-015-0359-y

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Meta-Analyses of the Effects of Habitual Running on Indices of Health in Physically Inactive Adults

Abstract

Background

Objective

Data Sources

Study Selection

Study Appraisal and Synthesis Methods

Results

Limitations

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Objective

Data Sources

Study Selection

Study Appraisal and Synthesis Methods

Results

Limitations

Conclusions

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