BMX
Move · High-Intensity · Movement, Typed Supps
After the first straight, the fastest riders are often the ones pedalling least — speed is carried by pushing and pulling the bike through the bumps rather than by turning the cranks.
Stage by stage
- On the gate (Pre-loaded countermovement at gate): The rider holds a flexed, rearward position and unloads arms and legs together as the gate drops, converting stored elastic energy into acceleration.
- First straight (Maximal phosphocreatine output): The opening sprint runs at or near peak power, drawing on phosphocreatine before glycolysis takes over for the rest of the lap.
- Through the rhythm (Pumping generates speed): Extending into downslopes and flexing over crests applies force through the bike rather than the cranks, loading grip, trunk and legs together.
- Days later (Eccentric landing load): Repeated absorption through flexed limbs leaves quadriceps and lower-back soreness, and crash exposure makes clavicle and wrist fractures the characteristic injuries.
Muscles trained
- Primary: quads, glutes, forearms
- Secondary: calves, abs
Intensity
8.5 METs (Bicycling, BMX).
Time to effect
- Weeks: Gate starts, pedaling power out of the first straight, and basic jump technique over doubles and rollers improve within the first few weeks of regular practice.
- Months: The explosive hip and leg power needed to carry speed through a full lap of jumps and berms without pedaling, along with the grip and core strength to control the bike mid-air, build up over months of dedicated training.
Related supplements
Common myth
BMX racing is over so fast that it cannot build meaningful fitness. In reality: A race lap lasts well under a minute, but that brevity reflects near-maximal anaerobic output rather than low effort, and competitive riders still build substantial leg power, grip strength, and explosive conditioning through repeated high-intensity training runs.
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