Comparison of Older Adults' Steps per Day Using an NL-1000 Pedometer and Two GT3X+Accelerometer Filters

被引：29

作者：

Barreira, Tiago V. ^{[1
]}

Brouillette, Robert M. ^{[1
]}

Foil, Heather C. ^{[1
]}

Keller, Jeffrey N. ^{[1
]}

Tudor-Locke, Catrine ^{[1
]}

机构：

[1] Pennington Biomed Res Ctr, Baton Rouge, LA USA

来源：

JOURNAL OF AGING AND PHYSICAL ACTIVITY | 2013年 / 21卷 / 04期

关键词：

step counts; physical activity; measurement; accelerometry; validity; PHYSICAL-ACTIVITY; MOTION SENSORS; ACCELEROMETER; ACCURACY; OVERWEIGHT; VALIDITY; WALKING;

D O I：

10.1123/japa.21.4.402

中图分类号：

R592 [老年病学]; C [社会科学总论];

学科分类号：

030301 [社会学]; 100201 [内科学];

摘要：

The purpose of this study was to compare the steps/d derived from the ActiGraph GT3X+ using the manufacturer's default filter (DF) and low-frequency-extension filter (LFX) with those from the NL-1000 pedometer in an older adult sample. Fifteen older adults (61-82 yr) wore a GT3X+ (24 hr/day) and an NL-1000 (waking hours) for 7 d. Day was the unit of analysis (n = 86 valid days) comparing (a) GT3X+ DF and NL-1000 steps/d and (b) GT3X+ LFX and NL-1000 steps/d. DF was highly correlated with NL-1000 (r = .80), but there was a significant mean difference (-769 steps/d). LFX and NL-1000 were highly correlated (r = .90), but there also was a significant mean difference (8,140 steps/d). Percent difference and absolute percent difference between DF and NL-1000 were 7.4% and 16.0%, respectively, and for LFX and NL-1000 both were 121.9%. Regardless of filter used, GT3X+ did not provide comparable pedometer estimates of steps/d in this older adult sample.

引用

页码：402 / 416

页数：15

共 31 条

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