Table 2. Stability results of the eight positions in the trial.

	(1)	(2)	(3)	(4)
Position	Before trial	After 1st time out of cabin	Before 2nd time into cabin	After trial
NO	12.42±2.91	14.54±3.58▴	13.75±4.55	15.45±4.70▴
NC	17.96±7.06	18.21±8.14	17.12±6.86	16.96±5.69
PO	17.72±5.97*	18.35±4.95*	18.67±4.83*	17.91±6.90*
PC	29.05±10.16*	24.63±7.84*▴	24.90±7.79*▴	26.79±10.95
HR	16.44±6.05	15.94±5.26	15.40±5.26	16.32±4.01
HL	16.42±5.78	17.12±5.26	15.89±5.20	16.66±6.26
HB	17.23±5.28*	18.09±6.87	16.89±4.56	17.02±4.94
HF	17.50±7.45	16.54±5.58	16.88±5.94	17.24±6.61

Note: *indicate that there is a statistical significance compared with position NO, P<0.05;

^▴indicates a significant difference between values before and after each measurement, P<0.05.