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Aerobic exercise training and cardiorespiratory fitness in older adults: a randomized control trial
Boileau RA, McAuley E, Demetriou D, Devabhaktuni NK, Dykstra GL, Katula J, Nelson J, Pascale A, Pena M, Talbot H
Journal of Aging and Physical Activity 1999 Oct;7(4):374-385
clinical trial
4/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

A trial was conducted to examine the effect of moderate aerobic exercise training (AET) on cardiorespiratory (CR) fitness. Previously sedentary participants, age 60 to 75 years, were randomly assigned to either AET treatment or a control group for 6 months. The AET consisted of walking for 40 min three times/week at an intensity that elevated heart rate to 65% of maximum heart rate reserve. The control group performed a supervised stretching program for 40 min three times/week. CR fitness was assessed before and after the treatments during a grade-incremented treadmill walking test. Both absolute and relative peak VO2 significantly increased (p < 0.01) in the AET group, whereas they decreased modestly in the control group. Maximum treadmill time increased significantly (p < 0.01) in the AET group relative to the control group. These results indicate that CR fitness as measured by peak VO2 modestly improves in the elderly with a moderate-intensity, relatively long-term aerobic exercise program.

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