Table 2.

Forces and moments of the stretching gymnastics exercises.

Stretching gymnastics	Fres		MBend		MTors
	Δ [%]	p-value	Δ [%]	p-value	Δ [%]	p-value
#18 Hip Abductors—ipsi	− 27	0.068	− 70	0.068	− 3	0.715
#19 Hip Abductors—contra	− 53	0.068	− 69	0.068	− 46	0.066
#20 Hip Adductors—ipsi	− 33	0.249	− 36	0.207	− 72	0.028
#21 Hip Adductors—contra	− 4	0.345	− 19	0.075	− 34	0.075
#22 Hip Flexion-monopod—ipsi	− 37	0.028	− 58	0.028	− 22	0.600
#23 Hip Flexion-monopod—contra	+ 40	0.043	+ 35	0.043	+ 12	0.893
#24 Hip Flexion-step position—ipsi	+ 3	0.068	− 8	0.465	− 18	1.000
#25 Hip Flexion-step position—contra	− 4	0.465	− 19	0.273	+ 6	0.068

The results are given as delta ∆ (%) of the median peak values of the resultant force F_res, bending M_Bend and torsion M_Tors torque of the stretching gymnastics exercises and their variations in relation to the reference activity walking. Ipsi and contra denotes the ipsilateral or contralateral performance of the exercise with regard to the instrumented THA. Differences between the stretching gymnastics exercises and the reference activity are reported in relation to F_res, M_Bend and M_Tors and Wilcoxon signed rank test was used.