The Journal of Korean Physical Therapy

Table. 2.

Table. 2. Table 2

Comparison of trunk muscle activity within the group and between the group (Unit=% MVIC)

		Plank (n= 12)	UUP (n= 12)	LUP (n= 12)	f (p)
EO	Pre	9.55±11.23	7.37±3.50	5.76±1.01	3.84 (0.03*)
	Post	22.58±13.25	41.36±21.42	40.43±28.69
	Post–pre	12.57±9.62	36.24±11.47	33.87±13.78
	t (p)	-4.44 (<0.001*)	-5.17 (<0.001*)	-3.8 (<0.001*)
RA	Pre	9.85±11.21	6.83±1.39	6.05±1.33	13.24 (<0.001*)
	Post	23.11±11.72	35.01±12.66	38.36±11.12
	Post–pre	13.14±11.36	25.46±6.54	32.28±6.24
	t (p)	-4.39 (<0.001*)	-7.64 (<0.001*)	-9.23 (<0.001*)
ES	Pre	9.04±2.10	9.08±1.58	9.92±1.81	3.33 (0.05)
	Post	12.71±3.43	21.04±8.11	24.08±9.25
	Post–pre	3.13±2.66	11.46±4.95	14.77±5.09
	t (p)	-3.26 (0.01*)	-4.56 (<0.001*)	-5.12 (<0.001*)

Mean±standard deviation. Plank: Standard plank, UUP: Upper Unstable Plank, LUP: Lower Unstable Plank, EO: External oblique, RA: Rectus abdominis, ES: Erector Spinae. *p<0.05.

J Kor Phys Ther 2024;36:98-102 https://doi.org/10.18857/jkpt.2024.36.3.98