TABLE 4.

Physical fitness parameters based on musculoskeletal injuries in firefighters.

	abVO2max (L•min)		relVO2max (L•min)		Grip strength (kg)		Leg strength (kg)		Push-ups (rpm)		Sit-ups (rpm)		Sit-and-reach (cm)		Lean body mass (kg)
	N	$\overline{\mathrm{X}}$ ± SD	N	$\overline{\mathrm{X}}$ ± SD	N	$\overline{\mathrm{X}}$ ± SD	N	$\overline{\mathrm{X}}$ ± SD	N	$\overline{\mathrm{X}}$ ± SD	N	$\overline{\mathrm{X}}$ ± SD	N	$\overline{\mathrm{X}}$ ± SD	N		$\overline{\mathrm{X}}$ ± SD
Injured	129	3.4 ± 0.3	129	41.1 ± 5.8	126	87.8 ± 17.7	126	113.9 ± 17.7	126	28.9 ± 14.7	126	26.4 ± 10.6	126	41.5 ± 9.7	128		60.6 ± 10.5
Uninjured	179	3.4 ± 0.3	179	43.1 ± 6.2	177	91.1 ± 17.3	177	117.8 ± 27.2	177	32.1 ± 13.3	177	29.8 ± 9.9	177	43.8 ± 8.7	180		60.2 ± 9.4
p-value		0.142		0.002**		0.108		0.367		0.008**		0.005**		0.015*			0.525
Upper body injury	62	3.4±.03	62	40.4 ± 5.1	62	91.5 ± 17.3	61	116.2 ± 28.5	60	28.0 ± 15.2	60	25.8 ± 11.4	61	42.2 ± 10.0	62		61.8 ± 10.2
Uninjured	247	3.4±0.3	247	42.8 ± 6.3	243	89.3 ± 17.3	242	116.2 ± 28.5	243	31.6 ± 13.3	243	29.1 ± 10.0	243	43.1 ± 8.9	246		59.9 ± 9.5
p-value		0.904		0.007**		0.373		0.938		0.075		0.031*		0.433			0.180
Lower body injury	74	3.4 ± 0.3	74	41.5 ± 5.9	73	86.2 ± 17.4	73	113.9 ± 32.9	73	29.7 ± 13.2	73	27.0 ± 10.1	73	40.9 ± 9.9	74		59.7 ± 9.7
Uninjured	235	3.4 ± 0.3	235	42.6 ± 6.2	231	90.8 ± 17.4	230	117.1 ± 27.4	230	31.3 ± 13.9	230	28.9 ± 10.4	231	43.4 ± 8.8	234		60.6 ± 9.7
p-value		0.161		0.173		0.046*		0.387		0.190		0.190		0.039*			0.494
Shoulder injury	17	3.4 ± 0.3	17	37.9 ± 4.6	16	96.9 ± 25.6	16	120.9 ± 24.9	16	22.2 ± 10.9	16	22.0 ± 10.2	16	40.3 ± 12.6	17		64.6 ± 11.5
Uninjured	292	3.5 ± 0.3	292	42.6 ± 6.1	288	89.3 ± 16.9	287	116.1 ± 29.0	287	31.4 ± 13.8	287	28.8 ± 10.3	288	42.9 ± 8.9	291		60.1 ± 9.5
p-value		0.259		0.002**		0.088		0.514		0.009**		0.011*		0.417			0.060
Lower back injury	24	3.4 ± 0.3	24	41.1 ± 5.8	24	90.3 ± 13.4	24	114.5 ± 29.6	24	25.2 ± 15.4	24	25.8 ± 11.5	24	40.7 ± 11.1	24		61.9 ± 11.5
Uninjured	285	3.4 ± 0.3	285	42.4 ± 6.2	280	89.7 ± 17.8	279	116.5 ± 28.8	279	31.4 ± 13.5	279	28.6 ± 10.2	280	43.0 ± 8.9	284		60.2 ± 9.5
p-value		0.641		0.317		0.871		0.750		0.036*		0.197		0.226			0.407
Ankle and foot injury	39	3.4 ± 0.3	39	40.7 ± 6.2	39	83.7 ± 14.9	39	111.9 ± 32.2	39	27.1 ± 14.4	39	24.9 ± 10.8	39	40.2 ± 10.7	39		59.3 ± 10.6
Uninjured	270	3.4 ± 0.3	270	42.6 ± 6.1	265	90.6 ± 17.7	264	116.9 ± 28.3	264	31.4 ± 13.6	264	28.9 ± 10.2	265	43.2 ± 8.9	269		60.5 ± 9.6
p-value		0.527		0.071		0.021*		0.310		0.066		0.022*		0.049*			0.451

Note: * indicates statistical significance <0.05; ** indicates statistical significance <0.01; $\overline{\mathrm{X}}$ —mean; SD—standard deviation; L•min—liters per minute; mL•kg•min—milliliters per minute; kg—kilogram; rpm—repetitions per minute.