Effect of Warm-up on Cycle Time Trial Performance
Participants
n=8 well-trained road cyclists, habituated to 3-km time trials
Protocol
Randomly ordered 3-km TTs after: (a) no warm-up (NWU); (b) easy warm-up (EWU) — 15 min as 5-min segments at 70, 80 and 90% of ventilatory threshold (VT), then 2 min rest; (c) hard warm-up (HWU) — the same 15 min plus 3 min at the respiratory compensation threshold (RCT), then 6 min rest
Measured throughout each TT: VO2, power output (SRM), aerobic and anaerobic energy contributions, VO2 kinetics (mean response time to 63% of the VO2 observed at 2 km)
Key Results
3-km TT time improved (P < 0.05) after both warm-ups: EWU 266.8 ± 12.0 s (-2.8%) and HWU 267.3 ± 10.4 s (-2.6%) vs NWU 274.4 ± 12.1 s
No difference between easy and hard warm-up
Most of the gain came in the first 1000 m (48% of the gain in EWU, 53% in HWU): power over the first 1000 m was 384 W (EWU) and 386 W (HWU) vs 344 W (NWU)
VO2 mean response time was faster after warm-up: 45 ± 10 s (EWU) and 41 ± 12 s (HWU) vs 52 ± 13 s (NWU)
Anaerobic power output did not differ between conditions; aerobic power over the first 1000 m was larger after warm-up (203 W EWU, 208 W HWU vs 163 W NWU)
Authors' conclusion: in events of intermediate duration (4-5 min) warm-up enhances performance irrespective of its intensity, and the improvement is related to accelerated VO2 kinetics
Mechanism
Warm-up → faster VO2 kinetics → more aerobic power available in the opening minute → higher early power without extra anaerobic spend → faster TT. (The aerobic-power and mean-response-time data above are the abstract's; the causal chain is the authors' interpretation.)
Practical Application
In 8 well-trained cyclists, a 15-min progressive warm-up (5 min each at 70/80/90% of ventilatory threshold) made a ~4.5-min 3-km TT 2.8% faster than no warm-up (266.8 vs 274.4 s); adding 3 min at the respiratory compensation point gave no further gain (267.3 s) — for 4-5 min events, warm up, but the intensity of the warm-up matters little
The gain is front-loaded: about half of it comes in the first 1000 m, from higher aerobic power at the start
A sub-threshold progressive warm-up is sufficient for ~4-5 min efforts; harder warm-up segments are optional at this duration
Not from this paper; the base's own practice: for events much shorter or longer than 4-5 min, warm-up needs differ — see the cross-referenced warm-up entries
Limitations
Only a 3-km TT (~4.5 min effort); may not generalise to longer events
Small sample (n=8); sex of participants not stated in the abstract
Rest between warm-up and TT differed between conditions (2 min after EWU, 6 min after HWU)
The entry carries no DOI line; the abstract was verified via PubMed (PMID 16177615)
How this entry was checked and changed
Why this level
regraded 2026-09-27 from B+: crossover, n=8 (<15)
Content correction 2026-09-27
n=9 -> n=8 (abstract).
Protocol "10 min at 40% / 70% peak power" -> 15 min of 5-min segments at 70/80/90% VT (easy) and the same plus 3 min at RCT (hard).
"~2% improvement" -> -2.8% (EWU) and -2.6% (HWU) with the abstract's times; invented "r=0.67" correlation removed; first-1000 m power, mean response time and aerobic power figures added from the abstract.
Level B+ -> B (crossover, n=8); Sport "sprint" removed.