## 3 Results
### Associations for All Subjects  
Pearson's correlation coefficients with their associated 95% CI of the relationship between front and back squat foundation strength exercises, CMJ and DSJ force-time metrics, and weightlifting performance are shown in Figure 2 and Table 2. Briefly, the front and back squat 1 RMs were significant (\(p\) < 0.001) and nearly perfectly correlated with snatch and clean and jerk weightlifting performance for all subjects (r = 0.98-0.99). Countermovement jump and DSJ height, propulsive net impulse, and peak power were significant (\(p\) < 0.05), and strong to nearly perfect correlations were reported for weightlifting performance (r = 0.64-0.98). \begin{table}
\begin{tabular}{l l l l l l l} \hline
**Metrics** & **Mean \(\pm\) SD** & **LL 95\% CI** & **UL 95\% CI** & **CV (\%)** & **Min** & **Max** \\ \hline
**Males** & & & & & & & \\ Snatch (kg) & \(141.33\pm 13.78\) & 130.31 & 152.36 & 10 & 118.00 & 155.00 \\ Relative snatch (kg/kg) & \(1.94\pm 0.14\) & 1.73 & 1.95 & 8 & 1.63 & 2.00 \\ C\&J (kg) & \(171.5\pm 19.92\) & 155.56 & 187.44 & 12 & 140.00 & 193.00 \\ Relative C\&J (kg) & \(2.23\pm 0.14\) & 2.12 & 2.34 & 6 & 2.02 & 2.38 \\ Back squat (kg) & \(211.67\pm 22.29\) & 193.83 & 229.50 & 11 & 185.00 & 240.00 \\ Relative back squat & & & & & & \\ (kg/kg) & \(2.76\pm 0.22\) & 2.58 & 2.93 & 8 & 2.52 & 3.14 \\ Front squat (kg) & \(192.67\pm 23.85\) & 173.59 & 211.75 & 12 & 160.00 & 225.00 \\ Relative front squat & & \(2.51\pm 0.24\) & 2.32 & 2.70 & 10 & 2.15 & 2.80 \\ (kg/kg) & & & & & & \\ CMJ height (m) & \(0.53\pm 0.07\) & 0.48 & 0.58 & 12 & 0.45 & 0.60 \\ CMJ prop net impulse & & \(251.81\pm 39.58\) & 220.14 & 283.48 & 16 & 178.59 & 285.36 \\ CMJ PP (W) & \(5498.40\pm 1062.84\) & 4647.97 & 6348.83 & 19 & 3646.13 & 6497.64 \\ CMJ relative PP (W/kg) & \(70.74\pm 6.65\) & 65.42 & 76.07 & 9 & 61.87 & 77.41 \\ DSJ height (m) & \(0.51\pm 0.06\) & 0.46 & 0.56 & 12 & 0.41 & 0.58 \\ DSJ prop net impulse (N-s) & \(247.67\pm 35.45\) & 219.31 & 276.04 & 14 & 182.33 & 273.17 \\ DSJ PP (W) & \(4921.07\pm 710.21\) & 4352.799 & 5489.34 & 14 & 3592.13 & 5452.99 \\ DSJ relative PP (W/kg) & \(63.77\pm 5.31\) & 59.52 & 68.01 & 8 & 54.76 & 69.52 \\
**Females** & & & & & & \\ Snatch (kg) & \(81.43\pm 7.61\) & 75.80 & 87.07 & 9 & 72.00 & 92.00 \\ Relative snatch (kg/kg) & \(1.42\pm 0.07\) & 1.37 & 1.47 & 5 & 1.32 & 1.51 \\ C\&J (kg) & \(100.14\pm 9.94\) & 92.78 & 107.51 & 10 & 83.00 & 115.00 \\ Relative C\&J (kg/kg) & \(1.74\pm 0.06\) & 1.70 & 1.74 & 4 & 1.68 & 1.85 \\ Back squat (kg) & \(131.43\pm 13.76\) & 121.24 & 141.62 & 11 & 105.00 & 150.00 \\ Relative back squat & & \(2.29\pm 0.12\) & 2.20 & 2.38 & 5 & 2.17 & 2.53 \\ (kg/kg) & & & & & & \\ Front squat (kg) & \(114.29\pm 10.95\) & 106.17 & 122.40 & 10 & 94.00 & 127.00 \\ Relative front squat & & & & & & \\ (kg/kg) & \(1.99\pm 0.07\) & 1.94 & 2.04 & 4 & 1.87 & 2.10 \\ CMJ height (m) & \(0.40\pm 0.07\) & 0.35 & 0.45 & 16 & 0.28 & 0.46 \\ CMJ prop net impulse & \(161.46\pm 21.15\) & 145.79 & 177.13 & 13 & 136.63 & 194.60 \\ (N-s) & & & & & & \\ CMJ PP (W) & \(3329.47\pm 455.85\) & 2991.78 & 3667.17 & 14 & 2755.31 & 4057.07 \\ CMJ relative PP (W/kg) & \(58.11\pm 6.95\) & 52.96 & 63.27 & 12 & 47.78 & 65.65 \\ DSJ height (m) & \(0.37\pm 0.07\) & 0.32 & 0.42 & 19 & 0.27 & 0.44 \\ DSJ prop net impulse (N-s) & \(157.50\pm 19.96\) & 142.71 & 172.28 & 13 & 137.24 & 187.61 \\ DSJ PP (W) & \(2886.35\pm 435.76\) & 2563.90 & 3208.81 & 15 & 2213.12 & 3384.73 \\ DSJ relative PP (W/kg) & \(50.52\pm 7.98\) & 44.61 & 56.43 & 16 & 38.37 & 58.26 \\ \hline \end{tabular} SD, standard deviation; LL, lower limit; UL, upper limit; CI, confidence interval; CV, coefficient variation; C\&J, clean and jerk; CMJ, countermovement jump; PP, peak power; DSJ, deep squat jump.  
\end{table} 
Table 1: Results of weightlifting performances and CMJ and DSJ force–time metrics for males and females.