BARBARA E. AINSWORTH|David R. Bassett|Scott J. Strath|Ann M. Swartz|W. L. O’Brien|Raymond W. Thompson|Deborah Jones|Caroline A. Macera|C. Dexter Kimsey
Comparison of three methods for measuring the time spent in physical activity
Berliner Energieagentur (Germany)|Berliner Energieagentur (Germany)|Berliner Energieagentur (Germany)|Berliner Energieagentur (Germany)|Berliner Energieagentur (Germany)|Berliner Energieagentur (Germany)|Berliner Energieagentur (Germany)|Berliner Energieagentur (Germany)|Berliner Energieagentur (Germany)
three methods measuring time spent daily physical activity pa compared 21d period among 83 adults 38 men 45 womeneach day participants wore computer science applications inc csa monitor completed 1page 48item pa log reflected time spent household occupational transportation sport conditioning leisure activities week participants also completed telephone survey identify number minutes spent week nonoccupational walking moderate intensity hardvery hardintensity pa data analyzed using descriptive statistics spearman rankorder correlations three equations developed compute csa cut points moderate hardvery hard pa also compared pa logs pa surveythere modest good agreement time spent different pa intensity categories three csa cut point methods r 043094 p 0001 correlations csa pa logs ranged r 022 r 036 depending comparisons correlations survey items pa logs r 026054 p 001 moderate walking activities r 009 p 005 hardvery hard activities correlations survey items csa min per day varied according method used compute csa intensity cut pointsthe results consistent findings pa validation studies show motion sensors pa logs surveys reflect pa however methods always provide similar estimates time spent restinglight moderate hardvery hard pa