Physical activity status by pain severity in patients with knee osteoarthritis: a nationwide study in Korea

Table 2 Physical activity status by pain severity among knee osteoarthritis patients (N = 1279)

	Pain Severity						P-value
	None to mild (n = 152)		Moderate (n = 434)		Severe (n = 693)
	n	Weighted %	n	Weighted %	n	Weighted %
IPAQ^a
Inactive	80	52.6	244	61.6	428	61.1	0.142
Minimally active	47	31.1	130	27.9	175	25.9
HEPA active	25	16.3	57	10.6	84	13.0
Muscle-strengthening activity (2–3 days/week)^a
Not met	140	93.0	414	96.3	665	95.9	0.309
Met	12	7.0	20	3.7	28	4.1
Flexibility activity (3–5 days/week)^a
Not met	133	87.7	355	82.9	593	84.3	0.585
Met	19	12.3	79	17.1	100	15.7
Osteoarthritis expert panel recommendation^a,b
Not met	116	76.6	338	82.4	560	81.7	0.341
Met	35	23.4	93	17.6	128	18.3

Pain severity was categorized using numerical rating scale: 0–3 = none to mild pain, 4–6 = moderate pain, and 7–10 = severe pain
IPAQ International physical activity questionnaire, HEPA Health-enhancing physical activity
^aThe totals do not equal 1279 because of missing data
^bOsteoarthritis expert panel recommendation: Performance of 30 min of moderate-intensity (50–70% maximal heart rate) physical activity or exercise at least 3 days a week

ISSN: 1471-2474