Effect of Video-Based versus Personalized Instruction on Errors during Elastic Tubing Exercises for Musculoskeletal Pain: A Randomized Controlled Trial

Table 2

Results of Proc Mixed procedure for normalized error score of the four exercises for the two groups mean (SD).

Exercise	Normalized error score (0–100)
	𝑁	Mean (SD)	𝑃 value
Bilateral raise
P	18	23.78 (10.66)	0.75
V	17	25.11 (13.50)
Bilateral scapular retraction
P	18	13.40 (8.42)	0.63
V	17	15.22 (13.28)
Unilateral shoulder external rotation
P	18	12.64 (6.94)	0.002*
V	16	22.19 (9.30)
Unilateral wrist extension
P	18	45.83 (21.05)	0.07
V	17	33.82 (16.79)

∗Indicates significant difference (𝑃<0.05) between the two groups. For the shoulder external rotation exercise the normalized error score is significantly higher in V group compared to P group.