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J Sci Med Sport. 2015 Jul;18(4):438-43. doi: 10.1016/j.jsams.2014.06.013. Epub 2014 Jul 4.

A 12-week sports-based exercise programme for inactive Indigenous Australian men improved clinical risk factors associated with type 2 diabetes mellitus.

Author information

1
School of Human Movement Studies, Charles Sturt University, Australia. Electronic address: amendham@csu.edu.au.
2
Sport and Exercise Discipline Group, UTS: Health, University of Technology Sydney (UTS), Australia.
3
School of Human Movement Studies, Charles Sturt University, Australia.

Abstract

OBJECTIVES:

This study assessed the effect of a 12-week sports-based exercise intervention on glucose regulation, anthropometry and inflammatory markers associated with the prevalence of type 2 diabetes mellitus (T2DM) in Indigenous Australian men.

DESIGN:

Twenty-six inactive Indigenous Australian men (48.6±6.6 years) were randomized into exercise (n=16) or control (n=10)conditions.

METHODS:

Training included ∼2-3 days/week for 12 weeks of sports and gym exercises in a group environment, whilst control participants maintained normal activity and dietary patterns. Pre- and post-intervention testing included: anthropometry, peak aerobic capacity, fasting blood chemistry of inflammatory cytokines, adiponectin, leptin, cholesterol, glucose, insulin and C-peptide. An oral glucose tolerance test measured glucose, insulin and C-peptide 30, 60, 90 and 120min post 75g glucose ingestion.

RESULTS:

The exercise condition decreased insulin area under the curve (25±22%), increased estimated insulin sensitivity (35±62%) and decreased insulin resistance (9±35%; p<0.05), compared with control (p>0.05). The exercise condition decreased in body mass index, waist circumference and waist to hip ratio (p<0.05), compared to control (p>0.05). Leptin decreased in the exercise group, with no changes for adiponectin (p>0.05) or inflammatory markers (p>0.05) in either condition. Aerobic fitness variables showed significant increases in peak oxygen consumption for the exercise condition compared to no change in control (p>0.05).

CONCLUSIONS:

Findings indicate positive clinical outcomes in metabolic, anthropometric and aerobic fitness variables. This study provides evidence for sport and group-based activities leading to improved clinical risk factors associated with T2DM development in clinically obese Indigenous Australian men.

KEYWORDS:

Aboriginal; Body composition; Cytokines; Glucose; Inflammation; Insulin

PMID:
25060913
DOI:
10.1016/j.jsams.2014.06.013
[Indexed for MEDLINE]

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