Analysis of Trunk Rolling Performances by Mattress Mobility Detection System in Poststroke Patients: A Pilot Study

Table 2

Comparison of turning ability parameters between two directions.

	Toward the paretic side; ()	Toward the nonparetic side; ()	value
Turn time (sec)	6.11 (0.89)	6.54 (1.04)	0.063
TL (cm)	15.99 (8.31)	15.32 (7.10)	0.616
Turn speed (cm/sec)	2.55 (1.40)	2.36 (1.11)	0.415
Turn peak (sec)	0.86 (0.56)	1.34 (0.99)	0.147
Turn force (kg⋅m/s^2)	67.04 (13.80)	71.56 (16.22)	0.144
Turn force/weight	1.01 (0.16)	1.09 (0.22)	0.139
Turn peak/time	0.14 (0.09)	0.21 (0.17)	0.229
Back time (sec)	5.76 (0.77)	5.51 (0.42)	0.239
BL (cm)	15.76 (8.29)	14.96 (7.08)	0.520
Back speed (cm/sec)	2.84 (1.56)	2.74 (1.32)	0.709
Back peak (sec)	1.62 (0.77)	1.74 (0.58)	0.546
Back force (kg⋅m/s^2)	66.99 (13.67)	68.22 (13.48)	0.387
Back force/weight	1.01 (0.16)	1.03 (0.14)	0.363
Back peak/time	0.27 (0.11)	0.32 (0.10)	0.209

Data are presented by mean and standard deviation.
The analyses were performed based on the paired -tests for the averaged turning ability parameters of the 10 measurements of each subjects.
Turn time: the time of turning; TL: distance between the centers of pressure before and after turning; turn speed: the speed of turning; turn peak: the time to peak counteraction; turn force: peak counteraction of turning; turn force/weight: the ratio of peak counteraction of turning to body weight; turn peak/time: the ratio of turn peak to turn time. Back time: time of turning back; BL: length of turning back of center of pressure; back speed: the speed of turning back; back peak time: the time of peak counteraction from turning back; back force, peak counteraction of turning back; back force/weight: the ratio of peak counteraction of turning back to body weight.