The eccentric muscle loading influences the pacing strategies during repeated downhill sprint intervals

Abstract : The purpose was to compare self-chosen pace during ten repetitions of 60 m running sprints performed on a level surface (SPL), or when running uphill (SPU) or downhill (SPD) on a 4.7% slope. When expressed as percent of maximal running speed for corresponding condition, SPD was lower than SPL (95.28 +/- 1.93 vs. 97.31 +/- 1.29%; P = 0.044), which was lower than SPU (97.31 +/- 1.29 vs. 98.09 +/- 0.74%; P = 0.026). Heart rates, blood lactate concentrations and general perceived exertion were lower during SPD (163.8 +/- 8.3 bpm, 11.66 +/- 1.24 mmol L( -1), and 4.1 +/- 1.0) than SPL (169.8 +/- 7.8 bpm, 13.69 +/- 0.33 mmol L(-1), and 5.8 +/- 0.6), which were lower than SPU (174.9 +/- 8.7 bpm, 15.27 +/- 0.02, mmol L(-1), and 6.3 +/- 0.5) (P \textless 0.05 for all analyzes). Results show that the level of eccentric muscle loading influences the pacing strategy.
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Bertrand Baron, F. Deruelle, F. Moullan, Georges Dalleau, Chantal Verkindt, et al.. The eccentric muscle loading influences the pacing strategies during repeated downhill sprint intervals. EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY, 2009, 105 (5), pp.749--757. ⟨10.1007/s00421-008-0957-6⟩. ⟨hal-01232363⟩

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