Faculty of Physical Education and Recreation, University of Alberta, Edmonton, Alberta, Canada.
J Phys Act Health. 2010 Mar;7(2):203-13. doi: 10.1123/jpah.7.2.203.
Fitness and health variables were measured in 128 sedentary men and women randomly assigned to 6 months of fitness training (F), a walking program (W), or a control (C) group.
The F program gradually increased volume and intensity until 4 d/wk of training, at 70% of peak VO2 for 43 min/session was prescribed while the W group performed daily walking monitored with pedometers and increased until 10,000 steps x d-1 were prescribed. Total weekly energy expenditure was matched between the activity groups. The control group was asked to maintain their usual activity.
Body mass, waist circumference, waist/hip ratio, resting HR were reduced in all groups after 6 months (P < .05). Fasting glucose, glucose tolerance, and total cholesterol were similarly improved in all groups (P < .05). Blood pressure and HR decreased during submaximal exercise in all groups (P < .05) but rating of perceived exertion (RPE) was decreased only in the F group (P < .05). Only the F participants showed a significant increase in ventilatory threshold (VT; 15%) and peak VO2 (9%) after 6 months.
Supervised fitness training in previously sedentary adults produced greater improvements in submaximal RPE, BP(sys), VT, and peak VO2 but not other fitness and health-related variables compared with a pedometer-based walking program matched for total energy cost.
128 名久坐的男性和女性被随机分配到 6 个月的健身训练（F）、步行计划（W）或对照组（C）中，对他们的健康和体能变量进行了测量。
F 计划逐渐增加训练量和强度，直到每周 4 天，每次训练 43 分钟，强度为峰值 VO2 的 70%，而 W 组则使用计步器监测日常步行，并逐渐增加，直到每天达到 10000 步。活动组之间的总每周能量消耗相匹配。对照组要求保持其日常活动。
所有组在 6 个月后体重、腰围、腰臀比、静息心率均降低（P<0.05）。所有组的空腹血糖、葡萄糖耐量和总胆固醇均得到类似改善（P<0.05）。所有组的血压和心率在亚最大运动时都降低（P<0.05），但仅 F 组的感觉用力程度评分（RPE）降低（P<0.05）。只有 F 组的通气阈（VT；15%）和峰值 VO2（9%）在 6 个月后有显著增加。
与计步器匹配的总能量消耗相比，监督性健身训练可使以前久坐的成年人在亚最大 RPE、血压（sys）、VT 和峰值 VO2 方面获得更大的改善，但其他健康和体能相关变量没有改善。
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