TABLE 3.
Reliability of repetition velocity in the deadlift.
| Variable and load | First vs. second testing session |
Second vs. third testing session |
Diff (95% CI) | ||||
| ICC (95% CI) | CV | SEM | ICC (95% CI) | CV | SEM | ||
| Peak velocity 30% 1RM | 0.84 (0.66, 0.93) | 3.60% | 0.08 (m/s) | 0.88 (0.72, 0.95) | 3.60% | 0.07 (m/s) | 0.03 (−0.12, 0.18) |
| Mean velocity 30% 1RM | 0.81 (0.60, 0.92) | 3.60% | 0.05 (m/s) | 0.84 (0.65, 0.93) | 3.90% | 0.04 (m/s) | 0.03 (−0.17, 0.20) |
| Peak power 30% 1RM | 0.91 (0.80, 0.96) | 7.00% | 115 (W) | 0.93 (0.83, 0.97) | 6.10% | 100 (W) | 0.02 (−0.01, 0.06) |
| Mean power 30% 1RM | 0.96 (0.90, 0.98) | 4.60% | 31 (W) | 0.97 (0.92, 0.99) | 4.10% | 28 (W) | 0.01 (−0.01, 0.04) |
| Peak velocity 45% 1RM | 0.84 (0.66, 0.93) | 4.10% | 0.07 (m/s) | 0.92 (0.82, 0.97) | 2.80% | 0.05 (m/s) | 0.08 (−0.04, 0.22) |
| Mean velocity 45% 1RM | 0.82 (0.61, 0.92) | 3.90% | 0.04 (m/s) | 0.84 (0.66, 0.93) | 3.30% | 0.04 (m/s) | 0.03 (−0.31, 0.19) |
| Peak power 45% 1RM | 0.95 (0.89, 0.98) | 6.50% | 103 (W) | 0.94 (0.86, 0.97) | 5.50% | 105 (W) | −0.01 (−0.11, 0.04) |
| Mean power 45% 1RM | 0.99 (0.97, 1.00) | 3.90% | 20 (W) | 0.99 (0.97, 0.99) | 3.30% | 22 (W) | 0.00 (−0.02, 0.01) |
| Peak velocity 60% 1RM | 0.95 (0.88, 0.98) | 2.20% | 0.03 (m/s) | 0.95 (0.88, 0.98) | 2.20% | 0.03 (m/s) | 0.00 (−0.08, 0.06) |
| Mean velocity 60% 1RM | 0.83 (0.64, 0.93) | 3.60% | 0.03 (m/s) | 0.81 (0.61, 0.92) | 3.50% | 0.04 (m/s) | −0.02 (−0.32, 0.12) |
| Peak power 60% 1RM | 0.96 (0.92, 0.98) | 4.10% | 81 (W) | 0.98 (0.96, 0.99) | 3.00% | 52 (W) | 0.02 (−0.01, 0.11) |
| Mean power 60% 1RM | 0.99 (0.97, 1.00) | 3.20% | 22 (W) | 0.99 (0.96, 0.99) | 2.80% | 26 (W) | 0.00 (−0.03, 0.01) |
| Peak velocity 75% 1RM | 0.91 (0.80, 0.96) | 3.20% | 0.04 (m/s) | 0.88 (0.74, 0.95) | 3.80% | 0.04 (m/s) | −0.03 (−0.08, 0.14) |
| Mean velocity 75% 1RM | 0.63 (0.29, 0.83) | 6.40% | 0.05 (m/s) | 0.71 (0.42, 0.87) | 6.10% | 0.04 (m/s) | 0.08 (−0.10, 0.38) |
| Peak power 75% 1RM | 0.99 (0.97, 0.99) | 3.90% | 44 (W) | 0.98 (0.95, 0.99) | 4.60% | 56 (W) | −0.01 (−0.02, 0.01) |
| Mean power 75% 1RM | 0.98 (0.96, 0.99) | 4.30% | 30 (W) | 0.98 (0.94, 0.99) | 4.30% | 33 (W) | 0.00 (−0.03, 0.01) |
| Peak velocity 90% 1RM | 0.79 (0.57, 0.91) | 8.30% | 0.08 (m/s) | 0.80 (0.58, 0.91) | 7.20% | 0.07 (m/s) | 0.01 (−0.19, 0.16) |
| Mean velocity 90% 1RM | 0.66 (0.35, 0.84) | 10.60% | 0.05 (m/s) | 0.77 (0.52, 0.90) | 7.70% | 0.04 (m/s) | 0.10 (−0.19, 0.33) |
| Peak power 90% 1RM | 0.92 (0.83, 0.97) | 8.80% | 112 (W) | 0.93 (0.83, 0.97) | 8.10% | 101 (W) | 0.00 (−0.09, 0.06) |
| Mean power 90% 1RM | 0.93 (0.84, 0.97) | 9.30% | 56 (W) | 0.95 (0.88, 0.98) | 7.70% | 44 (W) | 0.02 (−0.01, 0.05) |
1RM, one-repetition maximum; CI, confidence interval; ICC, intraclass correlation coefficient; CV, coefficient of variation; SEM, standard error of measurement; Diff, difference between ICC (second vs. third testing) and ICC (first vs. second testing).