使用计步器估计越南的步行体力活动。

Using pedometers to estimate ambulatory physical activity in Vietnam.

机构信息

Menzies Research Institute, University of Tasmania, Hobart, Australia.

出版信息

J Phys Act Health. 2011 Jan;8(1):52-61. doi: 10.1123/jpah.8.1.52.

DOI:10.1123/jpah.8.1.52

PMID:21297185

Abstract

BACKGROUND

Pedometer measurement of physical activity (PA) has been shown to be reliable and valid in industrialized populations, but its applicability in economically developing Vietnam remains untested. This study assessed the feasibility, stability and validity of pedometer estimates of PA in Vietnam.

METHODS

250 adults from a population-based survey were randomly selected to wear Yamax pedometers and record activities for 7 consecutive days. Stability and concurrent validity were assessed using intraclass correlation coefficients (ICC) and Spearman correlation coefficients.

RESULTS

Overall, 97.6% of participants provided at least 1 day of usable recordings, and 76.2% wore pedometers for all 7 days. Only 5.2% of the sample participants were involved in work activities not measurable by pedometer. The number of steps increased with hours of wear. There was no significant difference between weekday and weekend in number of steps, and at least 3 days of recordings were required (ICC of the 3 days of recordings: men 0.96, women 0.97). Steps per hour were moderately correlated (men r = .42, women r = .26) with record estimates of total PA.

CONCLUSIONS

It is feasible to use pedometers to estimate PA in Vietnam. The measure should involve at least 3 days of recording irrespective of day of the week.

摘要

背景

计步器测量身体活动（PA）已被证明在工业化人群中具有可靠性和有效性，但在经济欠发达的越南，其适用性尚未得到验证。本研究评估了计步器在越南测量 PA 的可行性、稳定性和有效性。

方法

从一项基于人群的调查中随机选择 250 名成年人，让他们佩戴 Yamax 计步器并连续记录 7 天的活动。使用组内相关系数（ICC）和斯皮尔曼相关系数评估稳定性和同时效度。

结果

总体而言，97.6%的参与者至少提供了 1 天的可用记录，76.2%的参与者连续 7 天佩戴计步器。只有 5.2%的样本参与者从事无法通过计步器测量的工作活动。计步器记录的步数随佩戴时间的增加而增加。工作日和周末的步数没有显著差异，至少需要 3 天的记录（3 天记录的 ICC：男性 0.96，女性 0.97）。每小时的步数与记录的总 PA 估计值中度相关（男性 r =.42，女性 r =.26）。