The Effect of Cadence on Oxygen Consumption: Finding Your Optimal Pedaling Rate

Introduction

The saying “90 rpm is the optimal cadence” is widely circulated in the cycling world, and Lance Armstrong maintaining 100+ rpm during his prime further turned high-cadence training into a trend. But does science actually support this claim? There is profound physiological logic behind cadence selection, and the “optimal cadence” actually varies from person to person.

The Physiological Framework of Cadence

At the same power output, the higher the cadence:

• The smaller the force (torque) per pedal stroke
• The faster the muscle contraction speed
• The greater the relative load on the cardiovascular system (heart rate, oxygen uptake)
• Local muscle fatigue decreases, but cardiorespiratory fatigue increases

The lower the cadence:

• Greater torque is required per pedal stroke
• Both slow-twitch (Type I) and fast-twitch (Type II) fibers require stronger recruitment
• Muscle fatigue increases, while cardiorespiratory load is relatively lower

This forms an inverted U-shaped “cadence-energy efficiency” curve—cadences that are too low or too high both increase oxygen consumption.

Research Data on Cadence and Oxygen Consumption

Source: Controlled cadence studies by Lucia et al. (2001) and Foss & Hallén (2004)

The Science of Preferred Cadence

Studies such as Hansen & Sjøgaard (2007) show that untrained individuals typically self-select a cadence of 60–70 rpm, while professional riders choose 85–100 rpm. The reasons for this difference:

1. Slow-twitch fiber proportion

Professional riders dominated by Type I fibers can maintain efficient aerobic metabolism even at high cadences without feeling like they are “spinning air”; those with a higher proportion of Type II fibers, on the other hand, experience rapid heart rate and poor efficiency at high cadences.

2. Neuromuscular coordination training

High cadence requires more refined neuromuscular coordination. Through years of training, professional riders’ nervous systems can precisely control muscle contractions at high frequencies, reducing the proportion of “ineffective force.”

3. Fatigue tolerance strategy

In long-distance races (such as the eastward climb of Wuling), professional riders choose higher cadences as a muscle-protective strategic consideration: higher cadence reduces the mechanical load per pedal stroke and delays muscle fatigue, making it worthwhile even if oxygen consumption is slightly higher.

Climbing Cadence vs. Flat-Road Cadence

When climbing, many riders naturally drop their cadence to 60–75 rpm, because gravity makes low-cadence, high-torque pedaling feel more “intuitive.” However, research shows:

• On 8–12% gradients, 70–80 rpm is the optimal efficiency range for most riders
• On gradients exceeding 15%, low cadences of 50–65 rpm make better use of body weight for force application
• On Taiwan’s gravel sections (such as the latter part of Hehuan Mountain), a slightly lower cadence (65–75 rpm) is recommended to maintain torque stability

How to Find Your Optimal Cadence

Testing Method

1. At a fixed power output (e.g., 200W), ride at 70, 80, 90, and 100 rpm for 5 minutes each
2. Record your steady-state heart rate at each cadence
3. The cadence with the lowest heart rate is typically the one at which you are currently most efficient

Individualization Principles

• Muscular riders (thick thighs, explosive power): typically prefer 70–80 rpm, with high force per pedal stroke
• Lean endurance riders: typically prefer 90–100 rpm, high frequency with low force
• Climbing races: it is recommended to practice maintaining a steady 75–85 rpm, avoiding cadences too low that strain the knees or too high that waste heart rate

Practical Methods for Cadence Training

Increasing Cadence: High-Cadence Intervals

• 90 seconds of high cadence (100–110 rpm, Zone 2 intensity) + 60 seconds of normal cadence, repeated for 8–10 sets
• Goal: neuromuscular adaptation, making high cadence feel “natural” rather than “spinning air”

Maintaining Low-Cadence Strength: Low-Cadence Force Pedaling

• Deliberately choose a low gear on climbs (50–60 rpm), maintaining Zone 3–4 intensity for 5–10 minutes at a time
• Goal: enhance muscle tolerance under high torque, which is very useful on sections with varying gradients

Practical Recommendations

• 90 rpm is not a golden rule: finding your own “lowest heart rate cadence” is the truly individualized optimal cadence
• Climbing cadence training: deliberately practice maintaining 75–80 rpm on climbs to avoid knee injuries from the habit of “grinding big gears”
• Cadence sensors: even without a power meter, equipping a cadence sensor (approximately NT$500–1,500) can effectively track cadence consistency
• Long-term adjustment: progressing from a 60 rpm habit to 85 rpm requires at least 3–6 months of gradual adaptation; do not rush

Conclusion

Cadence selection is one of the most individualized decisions in cycling training. Science provides the framework (80–100 rpm is generally the most economical), but ultimately the optimal cadence must be found through testing and perception. Understanding the physiology behind cadence allows you to consciously manage this important variable on every ride, rather than leaving it to instinct.

Related Reading

• Optimizing Cycling Cadence: Science Finds Your Golden RPM
• The Science of Cadence: Is 90 RPM Really Optimal?
• Small Gear High Cadence vs. Big Gear Low Cadence: The Scientific Choice for Climbing Cadence
• Cadence Myths and Truths: 90 rpm Is Not a Law—Muscle Fibers and Race Stages Are