Table 6.

Strength test performance.

Sub-maximal muscle testing		Test completed				Contraindicated	Deferred
		At pace	Slower self-paced	Shorter self-paced	Flat self-paced
Crunch test number (%)
Tested	94 (56)	55 (64)	14 (58)	15 (71)	5 (56)	3 (15)	2 (29)
Number performed
20 (maximal)	82 (87)	50 (90)	12 (83)	12 (82)	3 (60)	3 (100)	2 (100)
15–19	3 (3)	1 (2)	0 (0)	1 (6)	1 (20)	0 (0)	0 (0)
10–14	3 (3)	1 (2)	2 (17)	0 (0)	0 (0)	0 (0)	0 (0)
5–9	4 (5)	3 (6)	0 (0)	1 (6)	0 (0)	0 (0)	0 (0)
0–4	2 (2)	0 (0)	0 (0)	1 (6)	1 (20)	0 (0)	0 (0)
Push-up on knees number (%)
Tested	36 (21)	20 (23)	8 (33)	5 (24)	1 (11)	0 (0)	2 (25)
Number performed
20 (maximal)	11 (30)	6 (30)	3 (37)	0 (0)	1 (100)	0 (0)	1 (50)
15–19	1 (3)	1 (5)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)
10–14	2 (6)	1 (5)	0 (0)	1 (20)	0 (0)	0 (0)	0 (0)
5–9	8 (22)	6 (30)	2 (26)	0 (0)	0 (0)	0 (0)	0 (0)
1–4	14 (39)	6 (30)	3 (37)	4 (80)	0 (0)	0 (0)	1 (50)
Plank number (%)
Tested	17 (10)	8 (9)	2 (8)	5 (24)	1 (11)	1 (5)	0 (0)
Seconds held mean ± SEM (range)	12 ± 2 (5–30)	13 ± 3 (5–30)	10 ± 0 (10)	11 ± 2 (5–20)	15 ± 0 (15)	15 ± 0 (15)
Squat test number (%)
Tested	29 (17)	18 (20)	3 (12)	4 (19)	2 (22)	2 (11)	0 (0)
Normal result	10 (44)	7 (39)	1 (33)	0 (0)	1 (50)	1 (50)
Abnormal result	19 (66)	11 (61)	2 (67)	4 (100)	1 (50)	1 (50)

SEM: standard error of the mean.