Thursday-Abstracts

Thursday, May 30, 2013
S280 Vol. 45 No. 5 Supplement
PurPOsE: To assess the impact of sex/gender on the associations of MQ, estimated
using laboratory (MQ-L) or field (MQ-F) methods, to functional performance tasks
varying in muscle mass recruitment.
METhOds: Age- and BMI-matched, community-dwelling older men (n = 40, 76.2
± 6.2 years, BMI = 27.3 ± 3.8 kg/m2) and women (n = 40, 75.8 ± 5.5 years, BMI =
27.0 ± 3.8 kg/m2) were assessed for grip strength via Jamar dynamometer, leg power
via Nottingham Power Rig, and body composition via DXA. Physical function was
assessed with the 30-sec chair rise (CHR) and the Physical Performance Test (PPT;
score range = 0 to 36). MQ-L was calculated as total leg power divided by lower body
lean mass. MQ-F was calculated as total grip strength divided by BMI.
rEsuLTs: MQ methods were correlated (r=0.52, p