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document
Walking trials in postmenopausal women : effect of one vs two daily bouts on aerobic fitness . We compared the effects of one vs two daily bouts of walking on aerobic fitness and body composition in postmenopausal women . One hundred and thirty-four subjects were randomized into exercise groups or a control group and 130 completed the study . The subjects walked 5 d/week for 15 weeks at 65 % of their maximal aerobic power expending 300 kcal ( 1255 kJ ) in exercise in one ( Group S1 ) or two daily sessions ( Group S2 ) . VO ( 2max ) was measured in a direct maximal treadmill test . Body mass index ( BMI ) was calculated and the percentage of body fat ( fat % ) estimated using skinfold measurements . The net change in the VO ( 2max ) was 2.5 mL min/kg ( 95 % CI 1.5 , 3.5 ) ( 8.7 % ) in Group S1 and 2.5 mL min/kg ( 95 % CI 1.5 , 3.5 ) ( 8.8 % ) in Group S2 . The net change in body mass was -1.2 kg ( 95 % CI-1.9 , -0.5 ) in Group S1 and -1.1 kg ( 95 % CI -1.8 , -0.4 ) in Group S2 . The net fat % change was -2.1 % ( 95 % CI-2.7 , -1.4 ) in Group S1 and -1.7 % ( 95 % CI-2.3 , -1.0 ) in Group S2 . Exercise improved the maximal aerobic power and body composition equally when walking was performed in one or two daily bouts .
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Intervention_Physical
one vs two daily bouts of walking
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Intervention_Other
walked
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Intervention_Physical
5 d/week for 15 weeks at 65 % of their maximal aerobic power expending 300 kcal
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Intervention_Other
exercise
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Intervention_Physical
direct maximal treadmill test
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Intervention_Physical
walking
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Outcome_Physical
aerobic fitness .
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Outcome_Physical
aerobic fitness
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Outcome_Physical
body composition
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Outcome_Physical
VO ( 2max )
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Outcome_Physical
Body mass index ( BMI )
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Outcome_Physical
VO ( 2max )
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Outcome_Physical
net change in body mass
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Outcome_Physical
net fat % change
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Participant_Condition
postmenopausal
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Participant_Sex
women
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Participant_Condition
postmenopausal
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Participant_Sex
women
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Participant_Sample-size
One hundred and thirty-four
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Participant_Sample-size
130