Strength Training for Cyclists: More Watts, Not More VO2max

Heavy strength training can help cyclists produce the same power at a lower metabolic cost and raise their anaerobic power ceiling. It does not appear to raise VO2max or maximal metabolic steady state. That distinction matters: lifting will not replace endurance riding, but it may help you turn the aerobic capacity you already have into more useful watts.

The best cyclist-specific synthesis to date, a 2026 systematic review and meta-analysis by Llanos-Lagos et al., pooled 17 controlled trials involving 262 endurance cyclists. Programs classified as heavy strength training, generally using loads at or above 80% of one-repetition maximum (1RM), significantly improved cycling efficiency and anaerobic power. The meta-analysis found no statistically significant change in VO2max or maximal metabolic steady state.

That is a more useful result than it may first sound. A cyclist who can hold a given wattage with less metabolic cost can preserve more capacity for climbs, attacks, and the final part of a race. The limitation is precision: the 17 studies averaged roughly 15 participants each, and the published summary does not provide enough detail to identify the best program for women, masters athletes, or cyclists at different performance levels.

Strength work changes the machinery, not the oxygen ceiling

VO2max measures the highest rate at which the body can use oxygen during maximal exercise. Heavy lifting does not appear to move that ceiling in endurance cyclists. Nor did it significantly change maximal metabolic steady state in the pooled evidence. Aerobic volume and interval training remain the main tools for those targets.

The proposed explanation for the cycling benefit is neuromuscular. Strength training may improve motor-unit recruitment, rate of force development, and the ability of tendons and connective tissue to transmit force. In practical terms, a stronger rider may need to recruit a smaller fraction of available muscle capacity to create the same pedal force. That can improve gross efficiency at submaximal workloads without requiring more oxygen delivery.

This mechanism is plausible, but it is still a proposed explanation rather than direct proof that any one change caused the performance effect. The cyclist meta-analysis reports the performance pattern; it does not establish a single biological pathway for every rider.

The body-weight fear has weak support

Many endurance cyclists avoid lifting because they expect unwanted mass. The available cyclist studies do not support a large, automatic weight penalty from sensible concurrent training.

In a 12-month longitudinal study by Cesanelli et al., 30 well-trained male cyclists completed one to two strength sessions per week, with three to five sets per exercise, alongside their regular endurance work. Total 1RM strength rose 67.7%, from 62.9 to 105.4 kg. Functional threshold power increased 5.5%, from 253.4 to 267.2 W, and lactate-threshold power increased 4.9%, from 254.3 to 266.9 W. Total body mass rose only 0.37 kg, while body cell mass rose 0.42 kg.

Those are encouraging season-long observations, but they do not prove that lifting caused every watt gained. The study had no randomization or control group. Seasonal progression, changes in endurance training, nutrition, recovery, and ordinary training adaptation could all have contributed.

A stronger design comes from an eight-week randomized controlled trial by Gil-Cabrera et al. in 20 male professional cyclists, whose average VO2peak was about 75.5 mL/kg/min. Both twice-weekly strength programs increased muscle mass, reduced fat mass, and kept total body mass stable. That does not mean every cyclist will maintain the same body composition, but it makes the "lifting inevitably makes riders heavy" story hard to defend.

How heavy must the bar be?

The headline recommendation—lift at or above 80% of 1RM—needs a footnote the size of a kettlebell. The meta-analysis classified heavy training that way, and the 2026 ACSM position stand supports heavy loading as a standard route to improve strength and muscle function in healthy adults. But cyclist-specific evidence does not show that 80% of 1RM is uniquely superior.

Gil-Cabrera and colleagues directly compared traditional resistance training at higher loads with lower-load optimum-power-load training, performed at maximal power-output velocity. Both groups improved time-trial performance after eight weeks, and there were no statistically significant differences between groups for any outcome. Both groups also showed a nonsignificant trend toward higher power at the respiratory compensation point, with P values of 0.056 to 0.066.

The trial was small, so it cannot rule out modest differences between approaches. Still, its direct comparison carries more weight than a rigid loading rule inferred from separate studies. The practical conclusion is less glamorous and more useful: cyclists need a structured, demanding resistance stimulus. Heavy sets are a reasonable option, but lower-load power-focused work may deliver similar cycling outcomes in professional riders.

Concurrent training has a cost, but it is not a deal-breaker

Adding endurance work to lifting does not erase strength adaptation. It can, however, limit how much maximal and explosive strength an athlete gains compared with resistance training alone.

In an 11-week study of trained men, Gomes et al. randomized participants to resistance-only, endurance-only, or concurrent training. Resistance-only training produced superior maximal and explosive strength gains. Back-squat 1RM increased similarly in the resistance-only and concurrent groups during the initial maximal-strength phase, but only the resistance-only group improved during the later explosive-strength phase. This study was not conducted in cyclists, so it cannot quantify the exact cost for riders. It does establish that the interference problem is measurable in trained people.

A 2024 systematic review and meta-analysis by Huiberts et al. likewise found that interference effects can be more pronounced in trained individuals. That matters for experienced cyclists, who have less unused adaptation available than beginners. The trade-off is straightforward: concurrent training can improve cycling-relevant strength and power, but it is unlikely to build the same maximal-strength ceiling as a resistance-only plan.

The interference effect also has a same-day version. A systematic review and meta-analysis by Markov et al. found that aerobic exercise performed before strength work modestly impaired subsequent lower-body strength and power in trained men. When a rider must combine sessions on one day, strength first is the cleaner choice. Better still, separate demanding rides and lifting sessions when the schedule allows.

This does not conflict with a 2026 study by Conceição et al., which found that combining long-interval HIIT with resistance training did not impair skeletal-muscle protein synthesis or hypertrophy. Muscle-building signals and hypertrophy are not the same endpoints as maximal force, explosive power, or cycling efficiency. Both findings can be true: concurrent work may preserve muscle-building processes while still reducing the peak strength gains seen with lifting alone.

Who should use it, and how?

The evidence best supports trained cyclists who want better efficiency and anaerobic power without chasing added body mass. It applies less confidently to female cyclists, masters athletes, and riders already doing well-designed strength training, because the cyclist studies largely enrolled trained men and the pooled evidence could not test those subgroups well.

• Use two dedicated resistance sessions per week as a practical starting point; the professional-cyclist trial used that frequency for eight weeks, and the year-long cohort used one to two sessions weekly.
• Run the program for at least eight weeks before judging it on cycling performance.
• Use heavy loading at or above 80% 1RM, or a high-effort power-focused alternative. The head-to-head cyclist trial found equivalent time-trial improvements with both approaches.
• Put strength before endurance if both must happen on the same day, since prior aerobic work can reduce the quality of the lifting session.
• Keep riding. Strength training did not significantly improve VO2max or maximal metabolic steady state in the cyclist meta-analysis.

The verdict

For endurance cyclists, strength training is a performance tool rather than a shortcut to a bigger aerobic engine. Across 17 controlled trials, heavy strength work improved efficiency and anaerobic power while leaving VO2max and maximal metabolic steady state statistically unchanged. A small randomized trial in professional cyclists suggests that heavy lifting is not the only workable prescription; power-oriented loading may perform similarly.

Expect useful gains, not magic. The evidence includes small studies, heterogeneous results, and several individual trials with no efficiency improvement. It also shows a real concurrent-training trade-off: cyclists can become substantially stronger, but not as strong as they might with resistance training alone. For a rider, that is usually a sensible exchange if the program improves the watts that reach the road.