Table 1 Descriptive statistics for the demographic, performance, and injury variables
Item | 28-day Reservist Course | 80-day Standard Course | ||
|---|---|---|---|---|
Females | Males | Females | Males | |
aAge [year, mean ± SD (n)] | 25.3 ± 7.4(1001) | 24.1 ± 7.4(6686) | 20.7 ± 4.8(990) | 21.0 ± 4.7(11085) |
aHeight [cm, mean ± SD (n)] | 166.2 ± 6.7(789) | 179.0 ± 7.2(5444) | 165.4 ± 6.2(845) | 178.8 ± 7.0(9129) |
aWeight [kg, mean ± SD (n)] | 63.1 ± 8.1(810) | 78.5 ± 10.8(5549) | 63.3 ± 8.5(864) | 78.1 ± 11.3(9371) |
aBody mass index [kg/m2, mean ± SD (n)] | 22.9 ± 2.4(787) | 24.5 ± 2.9(5407) | 23.1 ± 2.6(840) | 24.4 ± 3.1(9099) |
aInitial Push-ups [repetitions, mean ± SD (n)] | 8.3 ± 2.3(535) | 15.0 ± 1.0(3906) | 8.6 ± 2.7(596) | 15.0 ± 0.9(6413) |
aInitial Push-ups Failure [No., (%, n)] | 52 (9.7%, 535) | 63 (0.9%, 3906) | 50 (8.4%, 596) | 82 (1.3%, 6413) |
aInitial Sit-ups [repetitions, mean ± SD (n)] | 44.8 ± 3.2(542) | 45.0 ± 1.6(3907) | 45.4 ± 6.0(607) | 45.2 ± 2.7(6412) |
aInitial Sit-ups failure [No., (%, n)] | 14 (2.6%, 542) | 21 (0.5%, 3907) | 15 (2.5%, 607) | 33 (0.5%, 6412) |
aInitial Shuttle run [level, mean ± SD (n)] | 7.3 ± 0.7(542) | 7.5 ± 0.3(3911) | 7.3 ± 0.9(608) | 7.5 ± 0.2(6414) |
aInitial Shuttle run failure [No., (%, n)] | 100 (18.5%, 542) | 80 (2.0%, 3911) | 105 (17.3%, 608) | 83 (1.3%, 6414) |
Final Push-ups [repetitions, mean ± SD (n)] | 25.2 ± 9.9(431) | 43.2 ± 12.2(3302) | 27.0 ± 8.1(513) | 46.5 ± 11.8(5942) |
Final Sit-ups [repetitions, mean ± SD (n)] | 91.6 ± 17.2(439) | 94.9 ± 12.4(3322) | 96.6 ± 9.5(515) | 97.6 ± 7.7(5953) |
Final 2.4-km run [min, mean ± SD (n)] | 11.7 ± 0.9(395) | 10.3 ± 0.9(3111) | 11.5 ± 0.7(495) | 9.9 ± 0.8(5794) |
bAny injury (%) | 31.0% (311/1002) | 15.5% (1040/6690) | 55.7% (551/990) | 32.4% (3587/11,087) |
bOveruse injury (%) | 18.1% (181/1002) | 8.2% (550/6690) | 45.9% (454/990) | 21.1% (2337/11,087) |
bStress fracture (%) | 0% (0/1002) | 0.0% (1/6690) | 1.3% (13/990) | 0.3% (31/11,087) |
bNeuromuscular injury (%) | 28.9% (290/1002) | 13.2% (880/6690) | 49.9% (494/990) | 28.4% (3152/11,087) |
bTraumatic injury (%) | 10.9% (109/1002) | 6.1% (409/6690) | 25.6% (256/990) | 14.4% (1598/11,087) |
bAttrition (%) | 7.9% (27/341) | 4.4% (51/1148) | 4.5% (27/599) | 5.0% (198/3945) |
bFinal RFA battery failure (%) | 28.0% (112/400) | 30.2% (953/3152) | 8.9% (44/497) | 12.4% (716/5797) |