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Table 3 Descriptive statistics for all dependent measures by group across testing periods measured at peak

From: Implicit video feedback produces positive changes in landing mechanics

Box Drop-Jump Task Pretest Posttest 1 Posttest 2 Posttest 3 Retention
Mean ± SD 95% CI Mean ± SD 95% CI Mean ± SD 95% CI Mean ± SD 95% CI Mean ± SD 95% CI
HF (°)
 IG 32.6 ± 12.4 26, 39.2 35.4 ± 9.6 29.3, 41.4 36 ± 11.9 29.3, 42.6 38.5 ± 13.9 30.8, 46.1 31.8 ± 16.3 24.2, 39.5
 EG 31.8 ± 9.6 25.2, 38.4 34.1 ± 10.1 28.1, 40.2 35.9 ± 9 29.2, 42.5 37.3 ± 11.6 29.7, 44.9 34.9 ± 6.8 27.3, 42.5
 CG 34.1 ± 7.9 27.5, 40.7 36.9 ± 8.1 30.9, 42.9 37.9 ± 9.6 31.3, 44.6 38 ± 9.3 30.4, 45.6 36.1 ± 10.1 28.5, 43.7
HA (°)
 IG −3.5 ± 4.2 −6.8, −0.2 −3.3 ± 3.4 − 6, −0.7 −4 ± 4.7 −7.1, −1 −5.2 ± 5.7 −9.1, −1.4 − 3.7 ± 4.6 − 7.4, − 0.1
 EG −6.6 ± 5.6 − 9.9, − 3.2 − 7.1 ± 4.7 − 9.8, − 4.5 −8.4 ± 3.5 −11.5, − 5.4 − 7.7 ± 5 −11.5, − 3.9 − 9.5 ± 5 −13.2, − 5.8
 CG − 7.6 ± 5.5 − 10.9, − 4. − 6.8 ± 4 − 9.5, − 4.2 −4.8 ± 5.7 − 7.9, − 1.78 −6.3 ± 6.7 − 10.1, −2.5 − 5.5 ± 7.2 − 9.2, − 1.8
HAM (Nm/kg)
 IG −1.3 ± 0.7 − 1.7, − 0.9 −1.4 ± 1 − 1.8, − 1 − 1.2 ± 0.5 −1.5, − 0.9 −1.2 ± 0.4 − 1.5, − 0.9 −1.2 ± 0.5 − 1.4, − 0.9
 EG −1.1 ± 0.6 − 1.6, − 0.7 −1 ± 0.2 − 1.4, − 0.6 −1.1 ± 0.4 − 1.3, − 0.8 −1.1 ± 0.6 − 1.4, − 0.8 − 0.9 ± 0.3 −1.1, − 0.7
 CG − 1.2 ± 0.7 −1.7, − 0.8 −1.1 ± 0.4 − 1.5, − 0.7 −1.1 ± 0.4 − 1.4, − 0.8 −1 ± 0.3 − 1.3, − 0.7 −1 ± − 0.3 −1.3 ± 0.8
KF (°)
 IG − 102.3 ± 13.7 − 110.1, − 94.4 − 104.2 ± 14 − 114.3, − 94 −104.8 ± 18.5 − 116.8, − 92.8 −104.8 ± 15.9 − 114.9, − 94.6 − 102.7 ± 16.1 − 113.1, − 92.2
 EG −99.6 ± 8.6 − 107.5, − 91.8 −108.2 ± 16.6 − 118.4, − 98.1 − 109.3 ± 18.5 − 121.3, − 97.3 − 110.1 ± 14.6 − 120.2, − 99.9 −109.5 ± 14.1 − 120, − 99.1
 CG − 98.6 ± 13.5 − 106.4, − 90.7 − 102.7 ± 16.2 − 112.9, − 92.6 − 100.7 ± 18.5 − 112.7, − 88.7 − 103.5 ± 16.4 − 113.6, − 93.3 − 102.80 ± 17.9 − 113.2, − 92.4
KA (°)
 IG −5.1 ± 2.5 −8.2, − 2.1 −4.2 ± 3.4 − 7.3, − 1.1 −5.35 ± 2.0 − 7.7, − 3 − 4.1 ± 4.5 −6.5, − 1.8 − 5.0 ± 3.0 − 7.2, − 2.9
 EG − 5.4 ± 5.5 − 8.4, − 2.3 − 6.7 ± 5.5 −9.8, − 3.6 − 4.4 ± 4.5 − 6.7, − 2.1 −2.1 ± 3.6 − 4.5, 0.3 − 7.1 ± 3.6 −9.3, − 5
 CG −4.4 ± 5.5 − 7.5, − 1.4 −6.2 ± 5.1 −9.3, − 3.1 −3.8 ± 3.7 −6.1, − 1.5 −3.3 ± 2.6 −5.7, − 0.9 −5.2 ± 3.3 −7.3, − 3.1
KAM (Nm/kg)
 IG − 0.4 ± 0.2 − 0.6, − 0.3 − 0.5 ± 0.3 − 0.6, − 0.4 −0.4 ± 0.2 − 0.5, − 0.26 −0.4 ± 0.2 − 0.5, − 0.3 −0.4 ± 0.2 − 0.5, − 0.3
 EG −0.4 ± 0.2 − 0.1, − 0.2 −0.4 ± 0.1 − 0.5, − 0.2 −0.4 ± 0.2 0.5, − 0.3 −0.4 ± 0.2 − 0.5, − 0.3 −0.3 ± 0.1 − 0.4, − 0.2
 CG −0.4 ± 0.3 − 0.5, − 0.3 −0.4 ± 0.1 − 0.5, − 0.3 −0.4 ± 0.2 − 0.5, − 0.3 −0.4 ± 0.1 − 0.5 -0.2 −0.3 ± 0.1 − 0.4, − 0.3
vGRF (N)
 IG 2162.9 ± 436 1907.4, 2418.4 2212.2 ± 441 1975.5, 2448.8 2075.2 ± 473 1822.6, 2327.9 2059.8 ± 398 1811.5, 2308.2 2093.5 ± 404 1865.3, 2321.6
 EG 2239.7 ± 304 1984.2, 2495.2 2194.7 ± 308 1958.1, 2431.4 2140.3 ± 338 1887.6, 2392.9 2091.9 ± 361 1843.5, 2340.3 2030.8 ± 340 1802.7, 2258.9
 CG 2362.1 ± 427 1984.2, 2495.2 2179 ± 331 1942.3, 2415.6 2064.8 ± 342 1812.2, 2317.4 2031.8 ± 388 1783.4, 2280.2 2023.8 ± 303 1795.7, 2251.9
  1. Mean ± standard deviation (SD) and 95% confidence intervals (CI)
  2. Hip flexion (HF), hip abduction (HA), hip abduction moment (HAM), knee flexion (KF), knee abduction (KA), knee abduction moment (KAM)
  3. Implicit group (IG), explicit group (EG), Control group (CG)