Table 3. Differences in countermovement jump metrics across the four time periods.
Strategy Metrics (unit) | Pre-Season | Non-Conference | Conference | Post-Season |
---|---|---|---|---|
Braking Phase Duration (s) | 0.289 ± 0.042 | 0.271 ± 0.029 * | 0.279 ± 0.034 | 0.273 ± 0.023 |
CON Phase Duration (s) | 0.246 ± 0.031 | 0.234 ± 0.024 * | 0.237 ± 0.030 | 0.238 ± 0.025 |
Countermovement Depth (cm) | -31.9 ± 4.38 | -30.2 ± 3.96 * | -31.2 ± 4.43 | -30.8 ± 3.88 |
ECC Deceleration Phase Duration (s) | 0.165 ± 0.029 | 0.154 ± 0.022 * | 0.156 ± 0.022 | 0.154 ± 0.018 |
ECC Peak Velocity (m•s-1) | -1.35 ± 0.137 | -1.36 ± 0.122 | -1.38 ± 0.155 | -1.37 ± 0.138 |
Driver Metrics (unit) | ||||
CON Impulse (N•s) | 268 ± 32.7 | 268 ± 34.6 | 265 ± 32.9 | 264 ± 33.0 |
CON Mean Force (N) | 2027 ± 182 | 2085 ± 214 * | 2045 ± 183 | 2033 ± 222 |
CON Peak Force (N) | 2459 ± 221 | 2545 ± 260 * | 2519 ± 209 * | 2504 ± 259 * |
ECC Braking Impulse (N•s) | 67.8 ± 14.1 | 68.6 ± 16.1 | 67.1 ± 14.5 | 68.4 ± 15.6 |
ECC Braking RFD (N•s-1) | 7528 ± 1918 | 8330 ± 1669 * | 8030 ± 1551 | 8043 ± 1424 |
ECC:CON Mean Force Ratio (%) | 46.0 ± 4.13 | 45.0 ± 3.48 * | 45.0 ± 4.55 | 45.3 ± 3.51 |
ECC Deceleration Impulse (N•s) | 128 ± 24.4 | 131 ± 24.2 | 130 ± 24.5 | 129 ± 22.3 |
ECC Deceleration RFD (N•s-1) | 8790 ± 3087 | 9873 ± 3341 * | 9675 ± 2987 | 9426 ± 2200 |
ECC Mean Braking Force (N) | 1173 ± 161 | 1194 ± 174 | 1164 ± 150 | 1172 ± 150 * |
ECC Mean Deceleration Force (N) | 1729 ± 229 | 1804 ± 240 * | 1767 ± 200 * | 1760 ± 214 * |
ECC Peak Force (N) | 2293 ± 259 | 2380 ± 282 | 2350 ± 237 * | 2334 ± 281 |
Force at Zero Velocity (N) | 2289 ± 260 | 2372 ± 282 | 2344 ± 236 | 2327 ± 285 |
Unloading Impulse (N•s) | -129 ± 24.4 | -131 ± 24.1 | -130 ± 24.5 | -129 ± 22.3 |
Outcome Metrics (unit) | ||||
Jump Height (cm) | 41.5 ± 7.53 | 40.8 ± 6.40 | 41.7 ± 7.58 | 41.2 ± 7.45 |
RSI-modified (ratio) | 0.62 ± 0.11 | 0.64 ± 0.10 | 0.65 ± 0.13 | 0.63 ± 0.11 |
*Note: “*” = significantly different from pre-season value