Quantifying Habitual Levels of Physical Activity According to Impact in Older People: Accelerometry Protocol for the VIBE Study

被引：31

作者：

Deere, Kevin C. ^{[1
]}

Hannam, Kimberly ^{[1
]}

Coulson, Jessica ^{[2
]}

Ireland, Alex ^{[2
]}

McPhee, Jamie S. ^{[2
]}

Moss, Charlotte ^{[3
]}

Edwards, Mark H. ^{[3
]}

Dennison, Elaine ^{[3
]}

Cooper, Cyrus ^{[3
]}

Sayers, Adrian ^{[1
]}

Lipperts, Matthijs ^{[4
]}

Grimm, Bernd ^{[4
]}

Tobias, Jon H. ^{[1
]}

机构：

[1] Univ Bristol, Sch Clin Sci, Musculoskeletal Res Unit, Bristol, Avon, England

[2] Manchester Metropolitan Univ, Sch Healthcare Sci, Manchester M15 6BH, Lancs, England

[3] Univ Southampton, MRC Lifecourse Epidemiol Unit, Southampton, Hants, England

[4] Atrium Med Ctr, Heerlen, Netherlands

来源：

JOURNAL OF AGING AND PHYSICAL ACTIVITY | 2016年 / 24卷 / 02期

基金：

英国医学研究理事会;

关键词：

peak g; accelerometry; VIBE; RANDOMIZED CONTROLLED-TRIAL; BONE-MINERAL DENSITY; PREMENOPAUSAL WOMEN; EXERCISE; ACCELERATION; COHORT;

D O I：

10.1123/japa.2015-0066

中图分类号：

R592 [老年病学]; C [社会科学总论];

学科分类号：

03 ; 0303 ; 100203 ;

摘要：

Physical activity (PA) may need to produce high impacts to be osteogenic. The aim of this study was to identify threshold(s) for defining high impact PA for future analyses in the VIBE (Vertical Impact and Bone in the Elderly) study, based on home recordings with triaxial accelerometers. Recordings were obtained from 19 Master Athlete Cohort (MAC; mean 67.6 years) and 15 Hertfordshire Cohort Study (HCS; mean 77.7 years) participants. Data cleaning protocols were developed to exclude artifacts. Accelerations expressed in g units were categorized into three bands selected from the distribution of positive Y-axis peak accelerations. Data were available for 6.6 and 4.4 days from MAC and HCS participants respectively, with approximately 14 hr recording daily. Three-fold more 0.5-1.0g impacts were observed in MAC versus HCS, 20-fold more 1.0-1.5g impacts, and 140-fold more impacts >= 1.5g. Our analysis protocol successfully distinguishes PA levels in active and sedentary older individuals.

引用

页码：290 / 295

页数：6

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