Associations of Activity Monitor Output and an Estimate of Aerobic Fitness With Pulse Wave Velocities: The Nakanojo Study
Associations of Activity Monitor Output and an Estimate of Aerobic Fitness With Pulse Wave Velocities: The Nakanojo Study
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DOI：
10.1123/jpah.2012-0374
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发表时间：
2015-01-01
影响因子：
3.1
通讯作者：
Aoyagi, Yukitoshi
中科院分区：
文献类型：
--
作者：
Ayabe, Makoto;Park, Sungjin;Aoyagi, Yukitoshi
背景：我们研究了习惯性体育活动和有氧健身对预防动脉硬化的相对贡献。研究方法：老年人（97名男性和109名女性，年龄>65岁）每人连续佩戴单轴活动监测器1年，活动数据总结为平均每日步数和活动持续时间>3代谢当量（MET）。有氧健身是通过标准化的5米步行测试最大步行速度来评估的。使用自动波形分析仪测量心-股脉搏波速度（cfPWV）确定中心动脉硬度。结果：cfPWV与每日步数、>3 MET的活动持续时间和最大步行速度呈负相关（P <0.05）。多元逐步回归分析显示，步数、>3 MET的活动持续时间和最大步行速度均为cfPWV的显著预测因子，分别占总方差的11%、7%和4%。结论：与使用可能出错的问卷调查的研究结果相反，我们的数据表明，健康指标（动脉硬度）与身体活动的客观指标比有氧健身的估计更密切相关。
Background: We examined the relative contributions of habitual physical activity and aerobic fitness to the prevention of arteriosclerosis. Methods: Elderly individuals (97 men and 109 women, aged >65 y) each wore a uniaxial activity monitor continuously for 1 year, with activity data summarized as an average daily step count and duration of activity >3 metabolic equivalents (METs). Aerobic fitness was assessed by a standardized 5-m walking test measure of maximal walking speed. Central arterial stiffness was determined using an automatic waveform analyzer measure of cardio-femoral pulse wave velocity (cfPWV). Results: The cfPWV was negatively associated with daily step count, duration of activity >3 METs, and maximal walking speed (P < .05). Multiple stepwise regression analysis revealed that the step count, duration of activity >3 METs, and maximal walking speed were all significant predictors of cfPWV, accounting for 11%, 7%, and 4% of total variance, respectively. Conclusions: In contrast to findings from studies using potentially fallible questionnaires, our data suggest that a measure of health (arterial stiffness) is more closely related to objective measures of physical activity than to an estimate of aerobic fitness.