Article

The effects of a combined strength and aerobic exercise program on glucose control and insulin action in women with type 2 diabetes.

Department of Physical Education and Sport Science, Democritus University of Thrace, 69100 Komotini , Greece.
Arbeitsphysiologie (impact factor: 2.15). 08/2004; 92(4-5):437-42. DOI:10.1007/s00421-004-1174-6 pp.437-42
Source: PubMed

ABSTRACT The purpose of the present study was to investigate the short- and long-term effects of a combined strength and aerobic training program on glycemic control, insulin action, exercise capacity and muscular strength in postmenopausal women with type 2 diabetes. Nine postmenopausal women, aged 55.2 (6.7) years, with type 2 diabetes participated in a supervised training program for 4 months consisting of two strength training sessions (3 sets of 12 repetitions at 60% one-repetition maximum strength) and two aerobic training sessions (60-70% of maximum heart rate at the beginning, and 70-80% of maximum heart rate after 2 months). Anthropometrical measurements, percentage glycated hemoglobin, a 2-h oral glucose tolerance test, exercise stress testing and maximum strength were measured at the beginning, and after 4 and 16 weeks of the exercise program. Significant reductions were observed in both the glucose (8.1% P<0.01) and insulin areas under the curve (20.7%, P<0.05) after 4 weeks of training. These adaptations were further improved after 16 weeks (glucose 12.5%, insulin 38%, P<0.001). Glycated hemoglobin was significantly decreased after 4 weeks [7.7 (1.7) vs 7.1 (1.3)%, P<0.05] and after 16 weeks [7.7 (1.7) vs 6.9 (1.0)%, P<0.01] of exercise training. Furthermore, exercise time and muscular strength were significantly improved after 4 weeks (P<0.01) as well as after 16 weeks (P<0.001) of training. Body mass and body-mass index, however, were not significantly altered throughout the study. The results indicated that a combined training program of strength and aerobic exercise could induce positive adaptations on glucose control, insulin action, muscular strength and exercise tolerance in women with type 2 diabetes.

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Keywords

12 repetitions
 
2-h oral glucose tolerance test
 
60% one-repetition maximum strength
 
aerobic training program
 
aerobic training sessions
 
Anthropometrical measurements
 
Body mass
 
combined strength
 
exercise capacity
 
exercise stress testing
 
exercise training
 
insulin action
 
insulin areas
 
maximum heart rate
 
maximum strength
 
muscular strength
 
percentage glycated hemoglobin
 
postmenopausal women
 
strength training sessions
 
supervised training program
 

Savvas P Tokmakidis