Effect of minimally invasive cardiac surgery compared with conventional surgery on post-operative physical activity and rehabilitation in patients with valvular heart disease

Egyptian Rheumatology and Rehabilitation

Table 3 Physical activity assessment by using triaxial accelerometer (steps/ day)

Physical activity amount before surgery (steps/day)		Conventional surgery group	MICS group	Test value	P-value	Sig.
Physical activity amount before surgery (steps/day)		No. = 25	No. = 25	Test value	P-value	Sig.
Pre-operative	Mean ± SD	2534.68 ± 584.86	2418.60 ± 418.41	0.807•	0.424	NS
Pre-operative	Range	1348 – 3764	1853 – 3245	0.807•	0.424	NS
Post-operative	Mean ± SD	2716.64 ± 584.53	3211.88 ± 594.94	-2.969•	0.005	HS
Post-operative	Range	1949 – 3876	1986 – 4001	-2.969•	0.005	HS
Difference	Mean ± SD	181.96 ± 205.00	793.28 ± 543.29	-4.569‡	<0.001	HS
Difference	Range	1 – 632	88 – 1894	-4.569‡	<0.001	HS
Paired t-test		4.438	7.301
P-value		<0.001 (HS)	<0.001 (HS)

P is significant at ≤ 0.05, P is highly significant (HS) at ≤ 0.01, and P is non-significant at > 0.05
MICS group: Minimally invasive cardiac surgery group
^*: Chi-square test‡: Mann Whitney test