Less is More: Standard Warm-up Causes Fatigue and Less Warm-up Permits Greater Cycling Power Output
Participants
n=10 track cyclists (full text; not checked against the abstract — the abstract does not state the sample size)
Protocol
Two warm-ups (WU) compared before a 30-s Wingate test and electrically elicited twitch contractions:
Traditional WU (as used before sprint track events, ≥50 min in total): 20 min of cycling with intensity rising from 60% to 95% of maximal heart rate, then four sprints at 8-min intervals
Experimental WU (shorter, less high-intensity work): intensity rising from 60% to 70% of maximal heart rate over 15 min, then a single sprint
Wingate test: 1-min lead-in at 80% of optimal cadence, then the 30-s test at optimal cadence
Key Results
Peak active twitch torque after the WU (as % of pre-WU amplitude) was lower after the traditional WU than after the experimental WU: 86.5 ± 3.3% vs 94.6 ± 2.4% (P < 0.05) — i.e. the long WU left measurable peripheral fatigue
Wingate performance was better after the experimental WU (P < 0.01): peak power 1390 ± 80 W vs 1303 ± 89 W, work 29.1 ± 1.2 kJ vs 27.7 ± 1.2 kJ — roughly 6% more peak power and 5% more work after the shorter WU (arithmetic on the abstract's means)
Authors' conclusion: the traditional track cyclist's WU causes significant fatigue that corresponds with impaired peak power; a shorter, lower-intensity WU permits better performance
Mechanism
The lower twitch torque after the traditional WU is direct evidence of peripheral (muscle-level) fatigue outweighing any temperature or potentiation benefit. Inference, not tested: the optimal warm-up is the minimum dose that raises muscle temperature and activates the neuromuscular system without accumulating fatigue; the metabolic causes (e.g. glycogen or metabolite changes) were not measured in this study.
Practical Application
In track cyclists, a ≥50-min traditional warm-up (20 min to 95% HRmax + 4 sprints) cut Wingate peak power to 1303 W versus 1390 W after a 15-min warm-up to 70% HRmax with one sprint (P < 0.01), and left twitch torque at 86.5% vs 94.6% of pre-warm-up — for short maximal efforts, more warm-up is worse
For sprint/short maximal events: a ~15-min progressive warm-up with a single opener is enough; multiple sprints in the warm-up cost peak power
Reduce warm-up volume if the athlete feels flat from the warm-up itself
Not from this paper; the base's own practice: when warm-up time is limited before a race, a short focused warm-up is adequate — this study supports it directly only for 30-s sprint efforts
Limitations
Sprint cycling (30-s Wingate) — may not apply to endurance events, where a longer warm-up may still be needed
Track cyclists — very specific population and event
Only two warm-ups compared; no "no warm-up" condition in the abstract
How this entry was checked and changed
Why this level
regraded 2026-09-27 from A-: crossover, n=10 (<15)
Content correction 2026-09-27
"4 warm-up conditions (~50, ~15, ~7 min, none)" -> abstract: two warm-ups, traditional (≥50 min) vs experimental (15 min + one sprint); "no warm-up → intermediate" and "~7 min brief warm-up" removed.
"-6.2% vs experimental" and "glycogen depletion / H+/Pi" -> abstract's measured values (1303 vs 1390 W, 27.7 vs 29.1 kJ; twitch torque 86.5 vs 94.6%); metabolic causes now marked as inference.
n=10 not in the abstract — labelled as full text; Level A- -> B (crossover, small n).