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身体活动、静坐时间的算术均数与成分均数比较

Comparison of standard and compositional descriptive measures of the proportion of time spent in physical activity and sedentary behavior

Items	MVPA/min	LIPA/min	SB/min
MVPA, moderate-to-vigorous physical activity; LIPA, low-intensity of physical activity; SB, sedentary behavior. Results of arithmetic mean expressed in proportion of actual total time, compositional mean expressed in proportion of 960 minutes.
Professional population
Arithmetic mean	114.35 (11.76%)	459.40 (47.26%)	398.41 (40.98%)
Compositional mean	94.16 (9.81%)	468.40 (48.79%)	397.44 (41.40%)
Nonprofessional population
Arithmetic mean	125.86 (12.54%)	603.45 (60.11%)	274.67 (27.36%)
Compositional mean	110.01 (11.46%)	600.00 (62.50%)	249.99 (26.04%)