Accessibility issues or difficulties with this website?
Call 919-962-2073 or email hchsadministration@unc.edu.

Accelerometer adherence and performance in a cohort study of US Hispanic adults.

TitleAccelerometer adherence and performance in a cohort study of US Hispanic adults.
Publication TypePublication
Year2015
AuthorsEvenson KR, Sotres-Alvarez D, Deng YU, Marshall SJ, Isasi CR, Esliger DW, Davis S
JournalMed Sci Sports Exerc
Volume47
Issue4
Pagination725-34
Date Published2015 Apr
ISSN1530-0315
KeywordsAccelerometry, Adolescent, Adult, Aged, Female, Hispanic Americans, Humans, Male, Middle Aged, Motor Activity, Patient Compliance, United States, Young Adult
Abstract

PURPOSE: This study described participant adherence to wearing the accelerometer and accelerometer performance in a cohort study of adults.METHODS: From 2008 to 2011, 16,415 US Hispanic/Latino adults age 18-74 yr enrolled in the Hispanic Community Health Study/Study of Latinos. Immediately after the baseline visit, participants wore an Actical accelerometer for 1 wk. This study explored correlates of accelerometer participation and adherence, defined as wearing it for at least three of a possible six days for ≥10 h·d. Accelerometer performance was assessed by exploring the number of different values of accelerometer counts per minute for each participant.RESULTS: Overall, 92.3% (n = 15,153) had at least 1 d with accelerometer data and 77.7% (n = 12,750) were adherent. Both accelerometer participation and adherence were higher among participants who were married or partnered, reported a higher household income, were first-generation immigrants, or reported lower sitting time. Participation was also higher among those with no stair limitations. Adherence was higher among participants who were male, older, employed or retired, not US born, preferred Spanish over English, reported higher work activity or lower recreational activity, and with a lower body mass index. Among the sample that met the adherence definition, the maximum recorded count per minute was 12,000, and there were a total of 5846 different counts per minute. On average, participants had 112.5 different counts per minute over 6 d (median, 106; interquartile range, 91-122). The number of different counts per minute was higher among men, younger ages, normal weight, and those with higher accelerometer-assessed physical activity.CONCLUSION: Several correlates differed between accelerometer participation and adherence. These characteristics could be targeted in future studies to improve accelerometer wear. The performance of the accelerometer provided insight into creating a more accurate nonwear algorithm.

DOI10.1249/MSS.0000000000000478
Alternate JournalMed Sci Sports Exerc
PubMed ID25137369
PubMed Central IDPMC4333140
Grant ListN01 HC065234 / HC / NHLBI NIH HHS / United States
N01HC65236 / HL / NHLBI NIH HHS / United States
N01HC65235 / HL / NHLBI NIH HHS / United States
N01 HC065237 / HC / NHLBI NIH HHS / United States
N01-HC65237 / HC / NHLBI NIH HHS / United States
N01HC65234 / HL / NHLBI NIH HHS / United States
N01 HC065233 / HC / NHLBI NIH HHS / United States
N01HC65233 / HL / NHLBI NIH HHS / United States
N01HC65237 / HL / NHLBI NIH HHS / United States
N01-HC65233 / HC / NHLBI NIH HHS / United States
N01 HC065236 / HC / NHLBI NIH HHS / United States
N01-HC65234 / HC / NHLBI NIH HHS / United States
N01 HC065235 / HC / NHLBI NIH HHS / United States
N01-HC65235 / HC / NHLBI NIH HHS / United States
MS#: 
0213
Manuscript Lead/Corresponding Author Affiliation: 
Coordinating Center - Collaborative Studies Coordinating Center - UNC at Chapel Hill
ECI: 
Yes
Manuscript Status: 
Published