Assessing Moderate to Vigorous Physical Activity in Older Adults: Validity of a Commercial Activity Tracker.
Assessing Moderate to Vigorous Physical Activity in Older Adults: Validity of a Commercial Activity Tracker.
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DOI：
10.3389/fspor.2021.766317
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发表时间：
2021
影响因子：
2.7
通讯作者：
Oursler KK
中科院分区：
文献类型：
--
作者：
Briggs BC;Hall KS;Jain C;Macrea M;Morey MC;Oursler KK
目的：尽管商业活动设备有潜力促进中度到剧烈的身体活动（MVPA），但老年人的信息有限，老年人是具有独特步态动力学和能量消耗的高优先级目标人群。本研究旨在调查Garmin Vivosmart HR设备在自由生活条件下对≥65岁成人的步数和MVPA的内容效度。方法：35名参与者（男性年龄= 73.7（6.3）岁）佩戴Garmin和ActiGraph GT 3X+器械至少2天。根据髋关节佩戴的ActiGraph器械测试准确度和人内可靠性。使用不同的加速度计临界值进行单独分析，以定义MVPA、基于人群的阈值（≥ 2，020计数/分钟）和老年人的推荐阈值（≥ 1，013计数/分钟）。结果：总体而言，Garmin器械高估了MVPA，而非髋关节佩戴式ActiGraph。然而，使用较低的年龄特异性MVPA截止值[中位数（IQR）每日分钟数; 50（85）vs. 32（49），p = 0.35]与规范标准（50（85）vs. 7（24），p < 0.001）相比，差异很小。无论MVPA临界值如何，组内相关性显示可靠性较差[ICC（95% CI）; 0.16（-0.40，0.55）至0.35（-0.32，0.7）]，这得到了Bland-Altman图的支持。Garmin步数既准确（M步差：178.0，p = 0.22）又可靠[ICC（95% CI; 0.94）（0.88，0.97）]。结论：结果支持商业活动设备测量老年人MVPA的准确性，但需要在不同患者人群中进行进一步研究，以确定随时间推移的临床实用性和可靠性。
Purpose: Despite the potential for commercial activity devices to promote moderate to vigorous physical activity (MVPA), limited information is available in older adults, a high-priority target population with unique gait dynamics and energy expenditure. The study purpose was to investigate the content validity of the Garmin Vivosmart HR device for step counts and MVPA in adults ≥65 years of age in free-living conditions. Methods: Thirty-five participants (M age= 73.7 (6.3) years) wore Garmin and ActiGraph GT3X+ devices for a minimum of 2 days. Accuracy and intra-person reliability were tested against a hip worn ActiGraph device. Separate analyses were conducted using different accelerometer cut-off values to define MVPA, a population-based threshold (≥2,020 counts/minute) and a recommended threshold for older adults (≥1,013 counts/minute). Results: Overall, the Garmin device overestimated MVPA compared with the hip-worn ActiGraph. However, the difference was small using the lower, age-specific, MVPA cut-off value [median (IQR) daily minutes; 50(85) vs. 32(49), p = 0.35] in contrast to the normative standard (50(85) vs. 7(24), p < 0.001). Regardless of the MVPA cut-off, intraclass correlation showed poor reliability [ICC (95% CI); 0.16(-0.40, 0.55) to 0.35(−0.32, 0.7)] which was supported by Bland-Altman plots. Garmin step count was both accurate (M step difference: 178.0, p = 0.22) and reliable [ICC (95% CI; 0.94) (0.88, 0.97)]. Conclusion: Results support the accuracy of a commercial activity device to measure MVPA in older adults but further research in diverse patient populations is needed to determine clinical utility and reliability over time.
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影响因子：
4.8
作者：
Paul SS;Tiedemann A;Hassett LM;Ramsay E;Kirkham C;Chagpar S;Sherrington C
通讯作者：
Sherrington C
影响因子：
33.9
作者：
Watson, Kathleen B.;Carlson, Susan A.;Fulton, Janet E.
通讯作者：
Fulton, Janet E.
影响因子：
1.5
作者：
Hergenroeder, Andrea L.;Gibbs, Bethany Barone;Brach, Jennifer S.
通讯作者：
Brach, Jennifer S.
DOI：
10.1186/s12966-015-0314-1
发表时间：
2015-12-18
期刊：
The international journal of behavioral nutrition and physical activity
影响因子：
--
作者：
Evenson KR;Goto MM;Furberg RD
通讯作者：
Furberg RD
DOI：
10.1186/s12966-015-0201-9
发表时间：
2015-03-27
期刊：
The international journal of behavioral nutrition and physical activity
影响因子：
--
作者：
Ferguson T;Rowlands AV;Olds T;Maher C
通讯作者：
Maher C