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Assessment of exercise capacity in women with type 2 diabetes
Author(s) -
Segerström Åsa B.,
Glans Forouzan,
Eriksson KarlFredrik,
Groop Leif,
Thorsson Ola,
Wollmer Per
Publication year - 2008
Publication title -
clinical physiology and functional imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.608
H-Index - 67
eISSN - 1475-097X
pISSN - 1475-0961
DOI - 10.1111/j.1475-097x.2008.00808.x
Subject(s) - medicine , vo2 max , incremental exercise , physical therapy , type 2 diabetes , work rate , aerobic capacity , heart rate , aerobic exercise , bicycle ergometer , endurance training , cycle ergometer , cardiology , diabetes mellitus , endocrinology , blood pressure
Summary The primary aim of this study was to compare the maximal oxygen uptake as evaluated from a submaximal exercise test (EVO 2peak ) to direct measurements of VO 2peak during a maximal exercise test as means of monitoring the aerobic endurance capacity in women with type 2 diabetes (T2D). Twenty‐seven women with T2D participated in the study. The program consisted of combined group training 1 h twice a week during 12 weeks and walks 1 h per week. EVO 2 max was estimated using a submaximal exercise test on a bicycle ergometer ad modum Åstrand. VO 2peak and maximal work rate were measured using an incremental maximal exercise test on an electrically braked bicycle ergometer at baseline and after 6 and 12 weeks. EVO 2peak was higher than VO 2peak at baseline and significantly higher at 12 weeks (EVO 2peak 1·92 ± 0·54 l min −1 , VO 2peak 1·41 ± 0·36, P < 0·005). Maximal work rate increased significantly after 12 weeks (12 ± 15, P < 0·005) compared to baseline. The main finding of this study was that EVO 2peak assessed using a submaximal exercise test, systematically overestimated VO 2peak . The combined group training increased maximal work rate but not VO 2peak . This is likely to reflect peripheral adaptation to exercise and/or improved mechanical efficiency.