Table 1.

Subject characteristics

	Linemen (n = 12)	Backs/Receivers (n = 11)	Controls (n = 10)
Age, years	20.9 ± 1.0	20.6 ± 1.2	21.8 ± 2.2
Body Weight, kg	119.2 ± 6.6b	86.9 ± 7.2	80.2 ± 16.2a
Height, cm	191.5 ± 4.8b	180.1 ± 11.2	179.7 ± 5.3a
Body composition, % body fat	23.5 ± 3.1b	10.7 ± 2.4	N/A
Resting HR, bpm	63.2 ± 7.5	57.8 ± 8.1	76.3 ± 8.9a , b
Systolic BP, mmHg	138.8 ± 12.0b	128.0 ± 9.5	119.7 ± 12.8a
Diastolic BP, mmHg	82.2 ± 8.3	78.7 ± 6.7	69.9 ± 11.0a , b
Maximum vertical jump, cm	56.6 ± 6.5b	72.8 ± 5.1	50.7 ± 8.1b
Maximum broad jump, cm	239.3 ± 12.8b	273.2 ± 12.3	201.6 ± 32.3a , b

N/A, not available.

All values are means ± SD.

^aSignificantly different from linemen.

^bSignificantly different from backs/receivers (P < 0.05).