Cyclists’ Leg Strength Testing: The Ratio of Maximum Strength vs. Muscular Endurance

“Cycling is an endurance sport—do I really need strength training?” This question troubles many riders. The answer is yes—but the type of strength cyclists need is vastly different from that of bodybuilders or weightlifters. Understanding the ratio between “maximum strength” and “muscular endurance” is the key to designing the right strength training program.

Strength Characteristics Required for Cycling

Biomechanics of the Pedaling Motion

A complete pedaling cycle involves the coordination of multiple joints and muscle groups:

Pedaling Cycle (0-360 degrees):

Why Both Types of Strength Need to Be Trained

The Role of Maximum Strength:

• Foundation for pedal thrust during climbs
• Short-duration maximum power output during sprints
• Improved “strength efficiency”: the same pedaling force requires recruiting a smaller percentage of maximum strength

The Role of Muscular Endurance:

• Sustaining steady pedaling output for hours
• Ability to delay muscle fatigue
• Power maintenance in the latter stages of long-distance rides

Strength Testing for Cyclists

Test 1: Leg Press 1RM

Test Protocol:

1. Warm up with 2-3 sets of light weight
2. Progressively increase weight to find the load that can only be completed for 1 rep
3. Record the 1RM (One Repetition Maximum)

Reference Standards for Cyclists:

Note: A cyclist’s 1RM target is typically lower than that of a weightlifter of the same body weight, but should be significantly higher than that of a general non-athlete (approximately 1.0x body weight).

Test 2: Squat Endurance Test (45% BW Squat Reps)

Test Protocol:

1. Use a barbell load equivalent to 45% of body weight
2. Perform as many standard squats as possible (no time limit, until failure)
3. Record the number of reps completed

Reference Standards for Cyclists:

Test 3: Single-Leg Squat Assessment (Pistol Squat/Single Leg Squat)

Purpose: Assess left-right leg strength symmetry and stability

Method:

• Attempt to complete a pistol squat on one leg
• Record the number of reps each leg can complete
• Calculate the percentage difference between left and right

Evaluation Criteria:

• Difference >10%: Possible left-right imbalance, affecting pedaling efficiency and injury risk
• Difference <10%: Good left-right balance

Test 4: Isometric Contraction Test (Isometric Squat Hold)

Method:

1. Assume a squat position with knees at 90 degrees
2. Hold this position for as long as possible
3. Record the time in seconds

The Optimal Ratio of Maximum Strength vs. Muscular Endurance

Adjusting the Ratio Based on Event Type

Different types of cycling events have different demands for the two strength types:

Strength Training Programs for Cyclists

Base Phase (Off-Season)

Focus: Building Maximum Strength

In-Season Adjustments

Focus: Maintaining Strength, Adding Endurance Components

Common Misconceptions

Misconception 1: Only aerobic training is needed; strength training is unnecessary
Fact: Cyclists who lack strength training experience more pronounced lower back pain and decreased pedaling efficiency in the latter stages of long rides.

Misconception 2: You need to build big muscles to see results
Fact: The goal of strength training for cyclists is to improve “relative strength” (strength-to-body weight ratio), not to increase muscle size.

Misconception 3: Heavier squats are always better
Fact: A cyclist’s squat target is typically 1.5-2x body weight. Beyond this range, the marginal benefit of additional weight on cycling performance diminishes rapidly.

Conclusion

Strength training for cyclists is an important yet often overlooked component of improving overall competitive performance. By conducting regular strength tests, clearly understanding your maximum strength and muscular endurance levels, and adjusting the training ratio according to your target event type, you can demonstrate balanced and powerful competitive ability in the upcoming season.

Related Reading

• Cycling Pedal Force Vector Analysis: The Most Effective Pedaling Angles and Muscle Coordination
• A Cyclist’s Guide to Muscle Gain: Building Functional Muscle in Endurance Training
• Application of Isokinetic Strength Testing in Power Prediction for Cyclists: A Biomechanical Study
• The Scientific Impact of Strength Training on Cycling Performance: Eccentric and Concentric Training