Pedometer indices for weekly physical activity recommendations in postmenopausal women
Pedometer indices for weekly physical activity recommendations in postmenopausal women
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DOI：
10.1249/01.mss.0000177455.58960.aa
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发表时间：
2005-09-01
期刊：
影响因子：
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通讯作者：
Blair, SN
中科院分区：
文献类型：
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作者：
Jordan, AN;Jurca, GM;Blair, SN
目的：本研究的目的是量化由计步器确定的每天步数与当前公共卫生建议的50%、100%和150%的每周体力活动的相关性。方法：来自DREW（女性运动剂量反应）研究的111名女性样本提供了数据。我们将女性随机分为三个运动组，分别消耗4、8和12千卡（-1）公斤（-1）周（-1）KKW。参与者在6个月的训练期间交替在跑步机和卧式自行车计力器上进行锻炼。在这项分析中，只使用了零级跑步机训练，慢速到中速(48-97 m（.)min(-1)）。我们将强度控制在相当于vo2峰值的50%的HR，参与者在基线和整个研究过程中都佩戴计步器，以评估他们的自由生活体力活动（步数）。结果：4、8和12 kkw组的基线平均值< 5400步（.）d（-1）。在6个月的运动训练期间，自由生活步数仍然< 5400步（.）d(-1)，并且与各组基线没有显著差异。每次锻炼的平均速度和距离分别为2.7 +/- 0.4英里/小时、1.2 +/- 0.2英里（4 KKW）、2.6 +/- 0.4英里/小时、2.2 +/- 0.4英里（8 KKW）和2.8 +/- 0.3英里/小时、2.7 +/- 0.4英里（12 KKW）。每3-4天每周（-1），每次锻炼产生2771 （4 KKW）、5457 （8 KKW）和6534 （12 KKW）步。结论：最初久坐不动的绝经后妇女可以通过有计划的中等强度步行达到目前公共卫生推荐的每周体力活动的50% （4 KKW）、100% （8 KKW）和150% (12 KKW)，平均累积约2800（50%）、5500（100%）和6500步(1)d(-1) (150%) 3-4 d(1)周（-1）。
Purpose: The aim of this study was to quantify pedometer-determined steps per day associated with 50, 100, and 150% of the current public health recommendation for weekly physical activity in sedentary postmenopausal women Methods: A sample of 111 women from the DREW (Dose Response to Exercise in Women) study provided data. We randomly assigned women into one of three exercise groups expending 4, 8, or 12 kcal(-1.)kg(-1.)wk(-1) (KKW). Participants exercised alternately on a treadmill and recumbent cycle ergometer for a 6-month training period. Only treadmill sessions done with zero grade, at slow to moderate speeds (48-97 m(.)min(-1)) were used in this analysis. We controlled intensity at a HR equivalent to 50% Of VO2peak Participants wore pedometers at baseline and throughout the study to assess their free-living physical activity (steps.d(-1)) Results: Baseline averages were < 5400 steps(.)d(-1) for the 4, 8, and 12-KKW groups. During 6 months of exercise training, free-living step counts remained < 5400 steps(.)d(-1) and did not significantly differ from baseline for each group. Average speeds and distances per exercise session were 2.7 +/- 0.4 mph, 1.2 +/- 0.2 miles (4 KKW), 2.6 +/- 0.4 mph, 2.2 +/- 0.4 miles (8 KKW), and 2.8 +/- 0.3 mph, 2.7 +/- 0.4 miles (12 KKW). This yielded 2771 (4 KKW), 5457 (8 KKW), and 6534 (12 KKW) steps per exercise session 3-4 d(.)wk(-1). Conclusions: Initially sedentary postmenopausal women can meet 50% (4 KKW), 100% (8 KKW), and 150% (12 KKW) of the current public health recommendation of weekly physical activity through planned moderate-intensity walking, accumulating an average of about 2800 (50%), 5500 (100%), and 6500 steps(.)d(-1) (150%) 3-4 d(.)wk(-1).