Commonly measured constructs of mobility included walking , climbing stairs , and lower extremity function .
There was heterogeneity in ways of defining and measuring mobility limitation in older adults living in the community .
Mobility is critical in maintaining independence in older adults .
This study aims to systematic ally review the scientific literature to identify measures of mobility limitation for community-dwelling older adults .
Stopping to rest during a 400-meter walk and incident mobility disability in older persons with functional limitations.
OBJECTIVES To examine the association between stopping to rest during a 400-m usual-pace walk test ( 400-MWT ) and incident  mobility disability in older persons with functional limitations . DESIGN Prospect i ve cohort study . SETTING Community based . PARTICIPANTS Four hundred twenty-four participants in the Lifestyle Intervention and Independence for Elders Pilot ( LIFE-P ) Study aged 70 to 89 with functional limitations ( summary score < or = 9 on the Short Physical Performance Battery ( SPPB ) ) but able to complete the 400-MWT within 15 minutes . MEASUREMENTS Rest stops during the 400-MWT were recorded . The onset of mobility disability , defined as being unable to complete the 400-MWT or taking more than 15 minutes to do so , was recorded at Months 6 and 12 . RESULTS Fifty-four ( 12.7 % ) participants rested during the 400-MWT at baseline , of whom 37.7 % experienced mobility disability during follow-up , versus 8.6 % of those not stopping to rest . Performing any rest stop was strongly associated with incident mobility disability at follow-up ( odds ratio (OR)=5.4 , 95 % confidence interval (CI)=2.7 - 10.9 ) after adjustment for age , sex , and clinic site . This association was weaker , but remained statistically significant , after further adjusting for SPPB and time to complete the 400-MWT simultaneously ( OR=2.6 , 95 % CI=1.2 - 5.9 ) . CONCLUSION Stopping to rest during the 400-MWT is strongly associated with incident mobility disability in nondisabled older persons with functional limitations . Given the prognostic value , rest stops should be recorded as part of the st and ard assessment protocol for the 400-MWT
Commonly measured constructs of mobility included walking , climbing stairs , and lower extremity function .
There was heterogeneity in ways of defining and measuring mobility limitation in older adults living in the community .
Mobility is critical in maintaining independence in older adults .
This study aims to systematic ally review the scientific literature to identify measures of mobility limitation for community-dwelling older adults .