Comparison of older and newer generations of ActiGraph accelerometers with the normal filter and the low frequency extension.
Comparison of older and newer generations of ActiGraph accelerometers with the normal filter and the low frequency extension.
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DOI：
10.1186/1479-5868-10-51
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发表时间：
2013-04-25
期刊：
影响因子：
--
通讯作者：
Sallis JF
中科院分区：
文献类型：
--
作者：
Cain KL;Conway TL;Adams MA;Husak LE;Sallis JF
许多研究使用较旧的ActiGraph（7164）进行体力活动测量，但该模型已被更新的模型（例如，GT3X+）。新一代模型更准确的假设受到了质疑，特别是在测量较低强度水平时。低频扩展（LFE）增加了较新模型的低强度灵敏度，但其与旧模型的可比性尚不清楚。本研究比较了7164和GT 3X+使用正常过滤器和LFE（分别为GT 3X +N和GT 3X +LFE）收集的步数和体力活动。25名成年人同时佩戴2个加速度计模型3天，并被指示进行典型行为。计算平均每日步数和分钟，每天在不穿，久坐，轻，中度，剧烈活动。使用重复测量ANOVA和事后成对比较来比较平均值。GT 3X +N和7164的平均值在6个类别中的4个类别中存在显著差异（p <0.05）。与7164相比，GT 3X +N每天少走2041步，久坐不动，轻度和中度减少（分别为+25.6，-31.2，-2.9分钟/天）。GT 3X +LFE在6个类别中的5个类别中显示无显著差异，但记录的步数（+3597步/天; p ≤ <0.001）显著多于7164步。使用较新ActiGraphs的研究应采用LFE，以便对较低强度活动具有更高的灵敏度，并与使用较旧模型的研究的活动结果更具可比性。新一代ActiGraph无法产生与带有正常滤波器或LFE的老一代器械相当的步数。
Many studies used the older ActiGraph (7164) for physical activity measurement, but this model has been replaced with newer ones (e.g., GT3X+). The assumption that new generation models are more accurate has been questioned, especially for measuring lower intensity levels. The low-frequency extension (LFE) increases the low-intensity sensitivity of newer models, but its comparability with older models is unknown. This study compared step counts and physical activity collected with the 7164 and GT3X + using the Normal Filter and the LFE (GT3X+N and GT3X+LFE, respectively). Twenty-five adults wore 2 accelerometer models simultaneously for 3Âdays and were instructed to engage in typical behaviors. Average daily step counts and minutes per day in nonwear, sedentary, light, moderate, and vigorous activity were calculated. Repeated measures ANOVAs with post-hoc pairwise comparisons were used to compare mean values. Means for the GT3X+N and 7164 were significantly different in 4 of the 6 categories (p < .05). The GT3X+N showed 2041 fewer steps per day and more sedentary, less light, and less moderate than the 7164 (+25.6, -31.2, -2.9 mins/day, respectively). The GT3X+LFE showed non-significant differences in 5 of 6 categories but recorded significantly more steps (+3597 steps/day; p < .001) than the 7164. Studies using the newer ActiGraphs should employ the LFE for greater sensitivity to lower intensity activity and more comparable activity results with studies using the older models. Newer generation ActiGraphs do not produce comparable step counts to the older generation devices with the Normal filter or the LFE.
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DOI：
10.1097/00005768-199805000-00021
发表时间：
1998-05-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Freedson, PS;Melanson, E;Sirard, J
通讯作者：
Sirard, J
影响因子：
5.7
作者：
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Dunstan DW
DOI：
10.1249/mss.0b013e3181b3af49
发表时间：
2010-02-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
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作者：
John, Dinesh;Tyo, Brian;Bassett, David R.
通讯作者：
Bassett, David R.
DOI：
10.1186/1479-5868-9-113
发表时间：
2012-09-12
期刊：
The international journal of behavioral nutrition and physical activity
影响因子：
--
作者：
Ried-Larsen M;Brønd JC;Brage S;Hansen BH;Grydeland M;Andersen LB;Møller NC
通讯作者：
Møller NC
DOI：
10.1249/mss.0b013e3182351913
发表时间：
2012-04-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
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作者：
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通讯作者：
Thompson, Dixie L.