Accelerometer-monitored sedentary behavior and observed physical function loss.
Am J Public Health
; 105(3): 560-6, 2015 Mar.
Article
in En
| MEDLINE
| ID: mdl-25602883
ABSTRACT
OBJECTIVES:
We examined whether objectively measured sedentary behavior is related to subsequent functional loss among community-dwelling adults with or at high risk for knee osteoarthritis.METHODS:
We analyzed longitudinal data (2008-2012) from 1659 Osteoarthritis Initiative participants aged 49 to 83 years in 4 cities. Baseline sedentary time was assessed by accelerometer monitoring. Functional loss (gait speed and chair stand testing) was regressed on baseline sedentary time and covariates (baseline function; socioeconomics [age, gender, race/ethnicity, income, education], health factors [obesity, depression, comorbidities, knee symptoms, knee osteoarthritis severity, prior knee injury, other lower extremity pain, smoking], and moderate-to-vigorous activity).RESULTS:
This cohort spent almost two thirds of their waking hours (average=9.8 h) in sedentary behaviors. Sedentary time was significantly positively associated with subsequent functional loss in both gait speed (-1.66 ft/min decrease per 10% increment sedentary percentage waking hours) and chair stand rate (-0.75 repetitions/min decrease), controlling for covariates.CONCLUSIONS:
Being less sedentary was related to less future decline in function, independent of time spent in moderate-to-vigorous activity. Both limiting sedentary activities and promoting physical activity in adults with knee osteoarthritis may be important in maintaining function.
Full text:
1
Database:
MEDLINE
Main subject:
Osteoarthritis, Knee
/
Sedentary Behavior
/
Gait
/
Motor Activity
Type of study:
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
Limits:
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
America do norte
Language:
En
Year:
2015
Type:
Article