Table 1. Description of the investigated exercises.

Exercise number	Body position	Exercise	Total number (range per patient) of measurements
1	Lying supine	Lifting one straight leg	94 (8 to 40)
2	Lying supine	Lifting both straight legs	41 (1 to 21)
3	Lying supine	Lifting the pelvis (Bridging)	93 (10 to 32)
4	Lying prone	Lifting one cranially stretched arm	62 (6 to 33)
5	Lying prone	Lifting one arm and the contralateral leg	44 (6 to 23
6	Lying lateral	Abduction of a straight leg	64 (2 to 33)
7	All-fours position	Outstretching one arm cranially	15 (2 to 7)
8	All-fours position	Outstretching one leg	8 (2 to 2)
9	All-fours position	Outstretching one arm and the leg on the contralateral side	23 (2 to 12)
10	All-fours position	Flexing the lumbar spine (Arching)	16 (2 to 7)
11	All-fours position	Extending the lumbar spine (Hollowing)	13 (2 to 5)