Table 2.

Parameters change in the study.

Parameter	Score				Score change (pre–post difference)
	Group 1: 0-degree tablet position		Group 2: 45- to 55-degree tablet position
	Pretest	Post	Pretest	Post
RULA	6	7	4	6	1	2
Between group	0.001*
Within group	0.039*		0.01*
CV angle (degree)	50.77 ± 4.52	47.77 ± 3.59	47.11 ± 4.72	46.11 ± 4.4	3	1
Between group	0.003*
Within group	0.039*		0.067
FEV1 (L)	2.95 ± 0.34	2.97 ± 0.33	2.75 ± 0.39	2.73 ± 0.41	−0.02	−0.02
Between group	0.09
Within group	0.65		0.716
FVC (L)	3.3 ± 0.48	3.28 ± 0.46	3.04 ± 0.57	3.04 ± 0.53	−0.02	0
Between group	0.088
Within group	0.354		0.984
FEV1/FVC (%)	89.55 ± 6.3	91.22 ± 4.79	91.22 ± 5.44	90.22 ± 3.52	1.67	−1.00
Between group	0.504
Within group	0.066		0.339

*Statistically significant difference, p < 0.05.