Scientific Approach to the 1-h Cycling World Record: A Case Study
An elite professional road cyclist was profiled before a successful attempt at the 1-h cycling world record. His power at the onset of blood lactate accumulation (OBLA) was 505 W in the laboratory and an estimated 500.6 W on the velodrome, with a wind-tunnel drag coefficient of 0.244.
He rode 53,040 m at an estimated average of 509.5 W, slightly above the 497.25 W that corresponded to his oxygen uptake at OBLA. The authors conclude that the record comes from the interaction of physiological and aerodynamic characteristics and that performance in this event can be predicted with mathematical models that integrate them.
Participants
n=1 elite professional road cyclist: 30 yr, 188 cm, 81 kg.
Protocol
Incremental laboratory test: maximal power output (Wmax), and power, estimated speed and heart rate at OBLA.
Incremental velodrome (track) test: speed and heart rate at OBLA measured, power at OBLA estimated.
Wind tunnel: drag coefficient and shape coefficient.
The record ride itself: distance covered; average power estimated (not measured) from the power vs oxygen uptake relationship.
Key Results
| Measure | Laboratory | Velodrome |
|---|---|---|
| Wmax | 572 W | — |
| Power at OBLA | 505 W | 500.6 W (estimated) |
| Speed at OBLA | 52.88 km/h (estimated) | 52.7 km/h |
| Heart rate at OBLA | 183 beats/min | 180 beats/min |
Wind tunnel: drag coefficient 0.244; shape coefficient 0.65 m².
Record: 53,040 m at an estimated average power output of 509.5 W — slightly higher than the 497.25 W corresponding to his oxygen uptake at OBLA (5.65 l/min).
Practical Application
In one world-class professional (81 kg, Wmax 572 W, power at OBLA 505 W), the 1-h world record of 53,040 m was ridden at an estimated 509.5 W, slightly above the power at his OBLA oxygen uptake (497.25 W), with a wind-tunnel drag coefficient of 0.244 (single case study). An hour-long all-out ride sits at, or just above, the rider's OBLA-type threshold, and the speed that power buys is set by aerodynamics as much as by the engine.
The track test gave almost the same threshold as the laboratory (500.6 vs 505 W; 180 vs 183 beats/min), so a field test on the actual machine and position reproduced the laboratory anchor in this rider.
Inference, not tested here: for an amateur's long time trial, which lasts longer than an hour for most, the target is likely to sit below this rider's OBLA-level intensity; REF-792 places long professional time trials near lactate-threshold heart rate rather than OBLA heart rate.
Not from this paper; the base's own practice: use this case for the principle (power and drag together set speed), not for numbers to copy.
Limitations
n=1; a world-class rider on a track in a record attempt.
Average power during the record was estimated from the power vs oxygen uptake relationship, not measured with a power meter.
The abstract does not describe the preparation it names in its aim, nor how the model prediction compared with the ride.
An erratum exists (see the Journal line); its content was not checked. The drag coefficient (0.244) and the OBLA power (497.25 W) are as printed in the Crossref abstract; the PubMed text has a stray space inside both numbers.
Written from the abstract and record metadata only (full text not read).
How this entry was checked and changed
Why this level
single case study, n=1