Table 2.
Performance variables during conventional deadlift (CD) and sumo deadlift (SD) in shod and barefoot conditions (mean ± standard deviation).
| Conventional Deadlift | Sumo Deadlift | |||
|---|---|---|---|---|
| Variable | Shod | Barefoot | Shod | Barefoot |
| VGRF (N) ‡ | 989.7 ± 230.2 | 993.9 ± 224.8 | 949.8 ± 212.9 | 949.1 ± 214.1 |
| TIME (s) †,‡ | 1.09 ± 0.13 | 1.05 ± 0.16 | 1.03 ± 0.11 | 0.99 ± 0.11 |
| DISP (m) †,‡ | 0.55 ± 0.04 | 0.52 ± 0.04 | 0.50 ± 0.05 | 0.46 ± 0.05 |
| PV (m/s) | 0.77 ± 0.10 | 0.77 ± 0.11 | 0.77 ± 0.11 | 0.73 ± 0.09 |
| WORK (J) †,‡ | 444.02 ± 99.52 | 433.97 ± 106.02 | 402.85 ± 100.72 | 378.42 ± 95.68 |
VGRF = peak vertical ground reaction force; TIME = time of concentric phase; DISP = vertical displacement of the barbell; PV = peak velocity of the barbell; WORK = integration of the force × velocity curve during the concentric phase; † significantly increased for shoe condition compared to barefoot condition; ‡ significantly increased for CD compared to SD.