Abstract
The purpose of this investigation was to determine whether moderate
intensity resistance training (RT) improves glycaemic control in obese, type 2
diabetic men. Eighteen subjects were randomly assigned to a 10-week RT program,
or a non-training control group (C). Glycosylated haemoglobin
(HbA1c), fasting glucose and insulin, glucose and insulin 120
minutes (2h) after a 75 g oral glucose load, body composition and
muscular strength and endurance were measured before and after the 10-week
experimental period. In the RT group fasting glucose and insulin decreased with
training (p < 0.05) and decreases in HbA1c
approached significance (p = 0.057). 2-h glucose and
insulin did not change in either group. Fat free mass (FFM) increased by
3.5 % after RT but was unchanged in the controls. Fat mass (FM)
increased 6.9 % in C but was unchanged in RT. Percent body fat
was unchanged in both groups. Muscular strength and endurance increased by 25
to 52 % in the RT group but was unchanged in controls. Changes in
fasting glucose and HbA1c were inversely related to changes in FFM.
These results suggest that RT is an effective form of exercise training which
modestly improves glycaemic control and lowers fasting insulin levels in obese
type 2 diabetics.
Key words
Resistance training - diabetes - glycaemic control
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J. C. Baldi
Department of Sport and Exercise Science · University of
Auckland
Private Bag 92019 · Auckland · New Zealand
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Telefon: +64-9-373 7599 ext. 2975
Fax: +64-9-373 7043
eMail: j.baldi@auckland.ac.nz