Sled-Pull Load–Velocity Profiling and Implications for Sprint Training Prescription in Young Male Athletes
Abstract
:1. Introduction
2. Materials and Methods
2.1. Subjects
2.2. Study Design
2.3. Procedures
2.3.1. Un-Resisted Sprinting Protocol
2.3.2. Resisted Sled-Pulling Protocol
2.4. Load–Velocity Relationship and Load Optimization
2.5. Statistical Analysis
3. Results
Load–Velocity Profiling Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Reliability of Sprint Variables | Mean | Change in Mean (%) | CV (%) | ICC | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Trial 1 | Trial 2 | Trial 3 | Trial 1–2 | Trial 2–3 | Trial 1–2 | Trial 2–3 | Trial 1–2 | Trial 2–3 | ||
Vmax (m/s) | Un-resisted | 7.9 ± 0.5 | 8.0 ± 0.4 | 7.9 ± 0.5 | 1.0 | −1.5 | 2.8 | 2.1 | 0.84 | 0.88 |
(−1.1–3.1) | (−3.1–0.0) | (2.1–4.4) | (1.6–3.3) | (0.64–0.95) | (0.68–0.96) | |||||
27 kg | 6.1 ± 0.8 | 6.1 ± 0.8 | 6.1 ± 0.7 | −0.6 | −0.7 | 4.9 | 3.1 | 0.84 | 0.92 | |
(−4.1–3.0) | (−1.7–3.2) | (3.6–7.6) | (2.3–5.0) | (0.60–0.94) | (0.79–0.97) | |||||
+20% BM | 5.2 ± 0.5 | 5.2 ± 0.5 | 5.1 ± 0.6 | −1.1 | −1.0 | 3.4 | 4.2 | 0.91 | 0.87 | |
(−3.5–1.4) | (−4.1–2.3) | (2.5–5.2) | (3.1–6.7) | (0.75–0.97) | (0.66–0.95) | |||||
+40% BM | 4.4 ± 0.6 | 4.1 ± 0.4 | 4.4± 0.6 | −5.7 | 6.2 | 7.1 | 6.7 | 0.72 | 0.77 | |
(−10.5–−0.7) | (1.2–11.5) | (5.2–11.3) | (4.9–10.5) | (0.36–0.89) | (0.45–0.91) | |||||
+60% BM | 3.7 ± 0.6 | 3.5 ± 0.5 | 3.8 ± 0.6 | −7.1 | 8.0 | 8.6 | 9.0 | 0.69 | 0.73 | |
(−13.4–−0.4) | (0.7–15.8) | (6.1–14.6) | (6.4–14.8) | (0.24–0.90) | (0.34–0.90) | |||||
Lopt (% BM) | 10% Vdec | 17 ± 1 | 17 ± 1 | 17 ± 1 | −1.5 | 0.1 | 3.2 | 3.3 | 0.71 | 0.65 |
(−4.3–1.4) | (−2.8–3.0) | (2.3–5.6) | (2.3–5.6) | (0.26–0.91) | (0.15–0.88) | |||||
25% Vdec | 42 ± 4 | 43 ± 3 | 42 ± 2 | 1.2 | −0.7 | 4.8 | 3.7 | 0.60 | 0.60 | |
(−3.0–5.6) | (−3.9–2.6) | (3.4–8.3) | (2.6–6.4) | (0.07–0.87) | (0.08–0.87) | |||||
50% Vdec | 84 ± 7 | 85 ± 5 | 85 ± 4 | 1.3 | −0.6 | 4.6 | 3.5 | 0.63 | 0.64 | |
(−2.7–5.5) | (−3.7–2.5) | (3.3–8.0) | (2.5–6.1) | (0.12–0.88) | (0.13–0.88) | |||||
75% Vdec | 125 ± 11 | 128 ± 8 | 127 ± 5 | 1.4 | −0.9 | 4.8 | 3.7 | 0.60 | 0.60 | |
(−2.8–5.8) | (−4.1–2.4) | (3.4–8.3) | (2.6–6.4) | (0.07–0.87) | (0.07–0.87) | |||||
Slope Load–Velocity | −1.72 ± 0.15 | −1.72 ± 0.08 | −1.72 ± 0.06 | −0.7 | 0.4 | 4.0 | 2.2 | 0.71 | 0.75 | |
(−4.1–2.9) | (−1.5–2.4) | (2.8–6.8) | (1.6–3.8) | (0.23–0.91) | (0.30–0.92) |
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Cahill, M.J.; Oliver, J.L.; Cronin, J.B.; Clark, K.P.; Cross, M.R.; Lloyd, R.S. Sled-Pull Load–Velocity Profiling and Implications for Sprint Training Prescription in Young Male Athletes. Sports 2019, 7, 119. https://doi.org/10.3390/sports7050119
Cahill MJ, Oliver JL, Cronin JB, Clark KP, Cross MR, Lloyd RS. Sled-Pull Load–Velocity Profiling and Implications for Sprint Training Prescription in Young Male Athletes. Sports. 2019; 7(5):119. https://doi.org/10.3390/sports7050119
Chicago/Turabian StyleCahill, Micheál J., Jon L. Oliver, John B. Cronin, Kenneth P. Clark, Matt R. Cross, and Rhodri S. Lloyd. 2019. "Sled-Pull Load–Velocity Profiling and Implications for Sprint Training Prescription in Young Male Athletes" Sports 7, no. 5: 119. https://doi.org/10.3390/sports7050119