Preoperative Strength Training for Elderly Patients Awaiting Total Knee Arthroplasty

Table 3

Strength measures, functional tasks, and WOMAC scores before (T1, T2) and after (T3, T4) surgery.

			T1 (𝑁=10/8)		T2 (𝑁=10/8)		T3 (𝑁=10/7)		T4 (𝑁=9/7)
MVT extension (Nm)	Affected side	STR	106±45		111±50	*	63±30	*	76±34
		STAND	121±52		121±50		70±35		97±40
	Unaffected side	STR	116±47		123±47		116±44		118±43
		STAND	137±59		139 ±57		128±65		138±56
Doublet Torque (Nm)	Affected side	STR	49±13		50±16	*	34±10	*	39±12
		STAND	51±19		48±17		35±13		39±14
	Unaffected side	STR	53±12		52±14		50±14		51±16
		STAND	50±15		50±16		50±17		50±13
VA (%)	Affected side	STR	79±13		78±15		79±9		80±10
		STAND	80±13		85±8		84±4		90±8
	Unaffected side	STR	75±19		78±15		80±13		83±11
		STAND	84±12		85 ±10		88±6		91±6
MVT flexion (Nm)	Affected side	STR	40±22		43±19	†	37±18	*	42±17
		STAND	46±25		50 ±24		36±16		50±23
	Unaffected side	STR	43±29		47±26		47±27		47±26
		STAND	57±33		55±30		55±30		55±26
Chair stand test (s)		STR	12.6±2.6	*	11.3±2.1		13.3±3.4	*	11.8±1.8
		STAND	12.3±2.7		11.4±1.8		12.5±2.5		10.8±1.5
Stair climb test (s)		STR	12.4±3.1		11.6±3.4	*	20.9±10.8	*	12.8±3.4
		STAND	12.9±3.8		12.4±3.3		17.6±7.5		14.1±0
6MWT (m)		STR	453±81	*	471±92		380±109	*	456±62
		STAND	460±52		493±55		440±87		513±97
WOMAC score (points)		STR	64±11		65±20		70±16	*	83±15
		STAND	67±11		67±8		79±11		93±4

MVT: Maximal voluntary torque; VA: voluntary activation; 6MWT: six-minute walk test; WOMAC: McMaster Universities Osteoarthritis Index; STR: strength training group; STAND: standard training group. The numbers of patients in the intervention and standard training groups are displayed at the different times. Values represent mean ± standard deviation. ∗Significantly different compared to previous measurement for both groups combined (𝑃<0.05). †Significant difference for groups between T3 and T2 (𝑃=0.043).