Comparison of Omron and ActiGraph monitors in estimating daily step counts and time spent in moderate to vigorous physical activity in free-living adults.

IF 3.9 Q1 SPORT SCIENCES

BMJ Open Sport & Exercise Medicine Pub Date : 2025-03-06 eCollection Date: 2025-01-01 DOI:10.1136/bmjsem-2024-002402

Hiroko Shimura, Shinpei Okada, Kazushi Maruo, Kaori Daimaru, Naoki Deguchi, Yoshinori Fujiwara, Hiroyuki Sasai

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Abstract

Objective: This study compared the Omron Active style Pro HJA-750C (OM) and the ActiGraph wGT3X-BT (AG) in estimating daily physical activity-step counts and time spent in moderate to vigorous physical activity (MVPA)-in free-living adults.

Methods: Japanese adults without gait abnormalities wore both devices during waking hours for seven consecutive days. Data were aggregated into daily steps and MVPA. A valid day required ≥10 hours of AG wear time with ≥100 and <50 000 accumulated steps from both devices. Agreement was assessed using Bland-Altman plots with multilevel analysis.

Results: The final dataset included 129 participants (age 23-89 years, 50.4% women), totalling 887 observations (5-7 daily observations/participant). OM estimated an overall mean of 7456 (SE 253) steps/day and 68.9 (SE 2.8) min/day in MVPA. Bland-Altman plots showed that OM estimated -56 steps/day (95% limits of agreement (LoA) = -1599; 1486) and +23 min/day (LoA = -17; 63) in MVPA compared with AG. Differences tended to increase with higher mean estimates for both step counts and MVPA.

Conclusion: OM estimated substantially more daily time spent in MVPA but showed similar daily step counts compared with AG. Differences were larger with higher activity levels.

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欧姆龙监测器和ActiGraph监测器在估算自由生活成年人每日步数和中度至剧烈体力活动时间方面的比较。

目的：本研究比较了欧姆龙Active style Pro HJA-750C （OM）和ActiGraph wGT3X-BT （AG）在估算自由生活成年人的日常体力活动-步数和中度至剧烈体力活动（MVPA）时间方面的差异。方法：无步态异常的日本成年人在连续7天醒着的时间内佩戴这两种装置。数据汇总为每日步数和MVPA。结果：最终数据集包括129名参与者（年龄23-89岁，50.4%为女性），共887次观察（5-7次每日观察/参与者）。OM估计MVPA的总体平均为7456 （SE 253）步/天，68.9 （SE 2.8）分钟/天。Bland-Altman图显示OM估计-56步/天(95%一致限(LoA) = -1599；1486)和+23分钟/天(LoA = -17；63) MVPA与AG比较。步数和MVPA的平均估计值越高，差异越大。结论：与AG相比，OM估计MVPA的每日时间更长，但每日步数相似。运动水平越高，差异越大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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