Table 2.

Baseline Physical Function and Physical Activity for Study Subjects Without Functional Limitation at Baseline and With and Without Incident Functional Limitation at Follow-up

Baseline physical function and physical activity	Incident performance-based measure of functional limitation (Slow gait speed, <1.0 m/s) N=1,663		Incident disease specific patient-reported functional limitation (WOMAC, >28/68) N=1,769		Incident general patient-reported functional limitation (SF-12, <40/100) N=1,557
	Yes n=127	No n=1536	Yes n=195	No n=1574	Yes n=278	No n=1279
Physical function, m/s	1.13±0.10	1.37±0.18	14.0±8.8	4.9±6.8	48.1±5.0	52.7±5.3
Sedentary, minutes	605.3±88.4	586.8±88.6	588.5±92.5	591.4±87.3	587.2±88.7	591.8±87.3
Light intensity, minutes	246.9±69.5	288.5±76.9	279.3±87.7	282.2±75.3	273.4±83.9	286.4±74.3
Moderate-to-vigorous intensity, minutes	6.7±10.4	20.4±20.2	13.3±14.9	19.4±20.1	14.1±17.8	21.3±20.4

Notes: Presented as mean±SD.

WOMAC, Western Ontario and McMasters University Osteoarthritis Index Physical Function Scale; m/s, meters per second; SF-12, 12-item Short From health survey