Details:

Alternative Title:
Prev Chronic Dis
Personal Author:
Evenson, Kelly R. ; Buchner, David M. ; Morland, Kimberly B.
Evenson, Kelly R. ; Buchner, David M. ; Morland, Kimberly B. Less -
Description:
Introduction

Estimates of objectively measured physical activity among older adults differ depending on the cut points used to define intensity. Our objective was to assess 1) moderate to vigorous physical activity (MVPA), exploring differences in prevalence depending on the cut point used, and 2) sedentary behavior, among US adults aged 60 years or older.

Methods

We used the most recently available accelerometer data (2003-2004 and 2005-2006) from the National Health and Nutrition Examination Survey. The sample included 2,630 adults aged 60 or older who wore an ActiGraph accelerometer for 1 week. We defined MVPA using 4 cut points (≥500, ≥1,000, ≥1,500, and ≥2,000 counts/min) and sedentary behavior as fewer than 100 counts per minute. All estimates were weighted to reflect the US population.

Results

The overall average counts per minute was 216. Mean MVPA ranged from 10.8 minutes per day (based on 2,000 counts/min) to 106.8 minutes per day (based on 500 counts/min). Regardless of the cut point used, MVPA was lower with each successive age group (60-69, 70-79, and ≥80) and higher among men than women. At any cut point, MVPA was highest for Hispanics and "other" racial/ethnic groups, followed by non-Hispanic whites and non-Hispanic blacks. The average time spent in sedentary behavior was 8.5 hours per day. The amount of sedentary time was greater among participants who were aged 80 or older compared to younger groups and among men compared to women.

Conclusion

MVPA estimates vary among adults aged 60 or older, depending on the cut point chosen, and most of their time is spent in sedentary behaviors. These considerations and the data presented suggest more research is necessary to identify the appropriate method of setting accelerometer cut points for MVPA in older adults.


Subject:
[+]
Actigraphy
Aged
Aged, 80 And Over
Body Mass Index
Female
Health Behavior
Humans
Male
Middle Aged
Motor Activity
Nutrition Surveys
Prevalence
Retrospective Studies
Sedentary Lifestyle

Source:
Prev Chronic Dis. 2012; 9.
Pubmed ID:
22172193
Pubmed Central ID:
PMC3277387
Document Type:
Journal Article
Funding:
P30 ES010126/ES/NIEHS NIH HHS/United States ; R01 HL086507/HL/NHLBI NIH HHS/United States ; U48-DP000059/DP/NCCDPHP CDC HHS/United States
P30 ES010126/ES/NIEHS NIH HHS/United States ; R01 HL086507/HL/NHLBI NIH HHS/United States ; U48-DP000059/DP/NCCDPHP CDC HHS/United States Less -
Place as Subject:
United States
Collection(s):
Preventing Chronic Disease
Main Document Checksum:
[+]
urn:sha256:34b26b9661fd9843736db9c0495893f92c16e539a59b33216afec1433f5606cc
File Type:

Supporting Files

• 	license.txt	txt
  	PCD-9-E26.nxml	txt

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