Reliability and validity of two fitness tracker devices in the laboratory and home environment for older community-dwelling people.
Reliability and validity of two fitness tracker devices in the laboratory and home environment for older community-dwelling people.
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DOI：
10.1186/s12877-018-0793-4
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发表时间：
2018-05-03
期刊：
影响因子：
4.1
通讯作者：
Howie E
中科院分区：
文献类型：
--
作者：
Burton E;Hill KD;Lautenschlager NT;Thøgersen-Ntoumani C;Lewin G;Boyle E;Howie E
三分之二的澳大利亚老年人久坐不动。健身追踪器在年轻人中很受欢迎，可能会鼓励老年人变得更加活跃。老年人可能有不同的步态模式，因此，重要的是要确定健身追踪器是否对这一人群有效和可靠。该研究的目的是测试两种健身追踪器（Fitbit Flex和ChargeHR）在老年人佩戴时的步数的可靠性和有效性。信度和效度在两种情况下进行了测试：1）在实验室中使用两分钟步行测试（2MWT）和2）在自由生活环境中。在佩戴健身追踪器时完成了两次2MWT。参与者在每次测试期间都被录像。然后，参与者获得了一个健身追踪器和一个GENEactiv加速计，在家中佩戴14天。31名参与者完成了两次2MWT，30名参与者完成了自由生活程序。直接观察步数（效标效度）的健身追踪器的类内相关较高（ICC：0.86，95%CI：0.76，0.93）。然而，这两个健身追踪器都低估了步数。发现每种器械（尤其是ChargeHR器械）的两个2MWT之间具有出色的重测信度（ICC ≥ 0.75）。在自由生活环境中，总距离和步数（健身追踪器）以及中度至剧烈体力活动（GENEactiv）的一致性强度良好（斯皮尔曼Rho分别为0.78和0.74）。Flex和ChargeHR在老年人佩戴时的可靠性和有效性良好，但两种器械均低估了实验室环境中的步数。这些健身追踪器似乎适合消费者使用，并促进老年人的身体活动。
Two-thirds of older Australians are sedentary. Fitness trackers have been popular with younger people and may encourage older adults to become more active. Older adults may have different gait patterns and as such it is important to establish whether fitness trackers are valid and reliable for this population. The aim of the study was to test the reliability and validity of two fitness trackers (Fitbit Flex and ChargeHR) by step count when worn by older adults. Reliability and validity were tested in two conditions: 1) in the laboratory using a two-minute-walk-test (2MWT) and 2) in a free-living environment. Two 2MWTs were completed while wearing the fitness trackers. Participants were videoed during each test. Participants were then given one fitness tracker and a GENEactiv accelerometer to wear at home for 14-days. Thirty-one participants completed two 2MWTs and 30 completed the free-living procedure. Intra Class Correlation’s of the fitness trackers with direct observation of steps (criterion validity) was high (ICC:0.86,95%CI:0.76,0.93). However, both fitness trackers underestimated steps. Excellent test-retest reliability (ICC ≥ 0.75) was found between the two 2MWTs for each device, particularly the ChargeHR devices. Good strength of agreement was found for total distance and steps (fitness tracker) and moderate-to-vigorous physical activity (GENEactiv) for the free-living environment (Spearman Rho’s 0.78 and 0.74 respectively). Reliability and validity of the Flex and ChargeHR when worn by older adults is good, however both devices underestimated step count within the laboratory environment. These fitness trackers appear suitable for consumer use and promoting physical activity for older adults.
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影响因子：
3.7
作者：
Chu AH;Ng SH;Paknezhad M;Gauterin A;Koh D;Brown MS;Müller-Riemenschneider F
通讯作者：
Müller-Riemenschneider F
影响因子：
--
作者：
Hargens, Trent A.;Deyarmin, Kayla N.;Sharpe, Lauren E.
通讯作者：
Sharpe, Lauren E.
影响因子：
3.2
作者：
Fulk, George D.;Combs, Stephanie A.;Reisman, Darcy S.
通讯作者：
Reisman, Darcy S.
DOI：
10.1249/mss.0000000000000984
发表时间：
2016-10-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Chen, Ming-De;Kuo, Chang-Chih;Hsu, Miao-Ju
通讯作者：
Hsu, Miao-Ju
影响因子：
6.3
作者：
Kharrazi, Rebekah J.;Nash, Denis;Mielenz, Thelma J.
通讯作者：
Mielenz, Thelma J.