Table 5.

Muscle strength in overweight older adults with chronic low back pain. Values are expressed as a 1-repetition maximum values and by normalized values (divided by body mass). Values are means ± SD

	Overweight	Moderately	Severely	p (sig)
		Obese	Obese
Absolute values
Lumbar extension (Nm)	176 ±107	217 ±119	203 ±73	0.49
Abdominal curl (Nm)	51 ± 26	62 ± 35	70 ± 42	0.39
Leg press (Nm)	409 ± 151	480 ± 176	433 ± 178	0.40
Normalized values
Lumbar extension (Nm/kg)	1.6 ± 0.7	1.7 ±0.8	1.3 ±0.5	0.45
Abdominal curl (Nm/kg)	0.5 ± 0.2	0.5 ± 0.2	0.4 ± 0.3	0.89
Leg press (Nm/kg)	3.9 ± 1.1	3.8 ± 1.1	2.9 ± 1.1	0.05 *

^*p<0.05 across the three groups