Maximal Sprint Power in Road Cyclists After Variable and Nonvariable High-Intensity Exercise

Area of Science:

• Sports Science
• Exercise Physiology
• Cycling Performance

Background:

• Understanding the impact of high-intensity cycling efforts on subsequent sprint performance is crucial for competitive cyclists.
• Variable intensity cycling may tax physiological systems differently than non-variable intensity cycling.

Purpose of the Study:

• To compare the effects of 10-minute variable (VAR) and non-variable (N-VAR) high-intensity cycling on maximal sprint performance in elite cyclists.
• To determine if these high-intensity efforts, mimicking race conditions, impair subsequent sprint capacity.

Main Methods:

• Ten elite male cyclists completed a 12-second maximal sprint under three conditions: rested, after 10-min N-VAR cycling, and after 10-min VAR cycling.
• The 10-minute efforts simulated race power outputs, with VAR including short accelerations.
• Physiological measures including power output, cadence, heart rate, blood lactate, and perceived exertion were recorded.

Main Results:

• No significant differences were found in peak or average power output and cadence during the maximal sprint across the three conditions.
• Average power output, cadence, maximal heart rate, blood lactate, and perceived exertion during the 10-minute efforts were similar between VAR and N-VAR conditions.
• Sprint performance was not compromised following either the VAR or N-VAR high-intensity cycling protocols.

Conclusions:

• Ten minutes of either variable or non-variable high-intensity cycling does not negatively affect maximal sprint performance in elite competitive cyclists.
• These findings suggest that cyclists can incorporate high-intensity efforts within a race without significantly compromising their ability to produce a maximal sprint.