Table 3.

Physical performance at baseline (T0) and postoperative at 1 day (T1), 4 days (T2), 3–4 weeks (T3), and 6 weeks (T4) after THA

Time points	Vitamin D status			p value
	Deficient <50 nmol/L (n = 23)	Insufficient 50–75 nmol/L (n = 32)	Sufficient >75 nmol/L (n = 32)	vitamin D*time	vitamin D	time
HGS, kg				0.482	0.322	0.143
T0	23.4±2.14	26.2±1.57	25.7±1.74
T1	23.3±1.89	27.8±1.33	25.2±1.50
T2	24.7±2.07	28.2±1.43	26.4±1.63
T4	26.0±2.13	27.1±1.60	25.7±1.76
CST, s				0.411	0.836	0.010c
T0	32.4±3.45	33.6±2.50	28.6±2.76
T3	28.3±2.97	29.8±1.91	29.4±2.17
T4	25.6±3.20	25.6±2.06	27.0±2.26
TUG, s				0.426	0.574	<0.001c, d
T0	12.1±0.89	11.8±0.73	11.0±0.75
T3	12.1±0.88	11.4±0.57	12.7±0.65
T4	10.4±0.72	9.6±0.45	10.2±0.50
10MWT, s				0.485	0.342	<0.001c, d
T0	12.6±1.23	11.0±0.98	10.0±1.03
T3	10.0±0.67	9.6±0.40	10.0±0.46
T4	9.1±0.63	8.1±0.38	8.6±0.42
LAPAQ, min/day				0.896	0.021a	<0.001b, c, d
T0	80.2±25.85	143.7±19.82	108.1±20.86
T3	22.1±16.18	57.2±9.70	28.4±11.64
T4	58.1±17.80	92.9±11.52	62.3±12.89
WOMAC, scale 0–96				0.910	0.559	<0.001b, c
T0	40.3±4.01	42.5±2.99	42.8±3.17
T3	4.9±3.64	10.1±1.90	8.9±2.37
T4	3.6±4.50	6.3±2.19	7.4±2.55

Values are presented as mean ± SEM.

Linear mixed model analysis, adjusted for gender, age, BMI, length of hospital stay and the need for physiotherapy.

THA, total hip arthroplasty; HGS, hand grip strength; CST, chair stand test; TUG, timed up and go test; 10MWT, 10-meter walking test; LAPAQ, LASA Physical Activity Questionnaire; WOMAC, Western Ontario and McMaster Universities Osteoarthritis index. Posthoc analyses, corrected for multiple comparison with Bonferroni:

^ap < 0.05, deficient vs insufficient

^bp < 0.001, T0 vs. T3

^cp < 0.01, T0 vs. T4

^dp < 0.001, T3 vs. T4.