Strength Endurance: Calf Raise – Single Leg – Step

The step version of the single-leg calf raise can be useful when the professional wants to assess calf endurance through a larger ankle range of motion than the ground version. Because the heel can lower below forefoot level, the test may increase the ROM demand on the calf-Achilles complex.

This makes setup consistency especially important. Step height, foot position, hand support, cadence, heel-rise height and bottom position must be clearly recorded.

The result should be interpreted with symptoms, ankle dorsiflexion, calf strength, Achilles tendon tolerance, hop testing, running exposure, balance and other lower-limb findings.

Quick Summary

Test name: Calf Raise – Single Leg – Step
Also known as: Step Single-Leg Calf Raise Test, Step Heel Rise Test
Category: Calf endurance / plantar-flexor strength-endurance
Primary score: Valid repetitions completed
Best use: Baseline testing, side-to-side comparison, retesting and step-based calf endurance monitoring
Key limitation: Step height, bottom range, heel-rise height and cadence strongly influence the result

What Is This Assessment?

The Calf Raise – Single Leg – Step Test measures how many controlled single-leg heel raises a client can complete from a step-based position.

The client places the forefoot on a step, box or raised edge, lowers the heel to the defined bottom position, then rises as high as possible through plantar flexion. The test continues until the client can no longer complete valid repetitions according to the selected protocol.

The exact setup must be recorded because changes in step height, forefoot position, bottom range, hand support and cadence can change the score.

Why It Is Used

The test may be used to assess:

Step-based plantar-flexor endurance
Calf strength-endurance through greater ROM
Side-to-side differences
Heel-rise height tolerance
Baseline and retest change
Achilles or calf symptom response
Running and hopping capacity context
Lower-limb endurance monitoring

It is most useful when the same step height, cadence, hand support, foot position, ROM target and stopping criteria are repeated over time.

What It Measures

The primary score is valid repetitions completed.

The result may reflect:

Calf endurance
Plantar-flexor strength-endurance
Heel-rise height control
Ankle range tolerance
Gastrocnemius and soleus contribution
Foot and ankle control
Balance tolerance
Side-to-side endurance difference
Fatigue response
Pain or symptoms
Motivation and familiarisation

It should not be described as isolated calf muscle capacity because the score can be influenced by balance, foot position, ankle mobility, Achilles tolerance, cadence, knee position and symptoms.

Who It Is Useful For

The test may be useful for:

Runners
Field sport athletes
Court sport athletes
Gym clients
Walking and stair-climbing clients
Lower-limb endurance monitoring
Achilles and calf load-tolerance monitoring
Professionals comparing left and right sides
Professionals tracking progress over time

It may not be suitable if the client has acute calf pain, high Achilles irritability, severe foot or ankle pain, poor balance, recent trauma, unacceptable symptoms during heel raise or inability to control the step position safely.

Equipment Required

Step, box or raised edge of standard height
Wall, rail or dowel for light fingertip balance support
Measurz rep counter
Optional Measurz metronome for cadence-controlled testing
Optional Measurz stopwatch if time-limited
Optional Measurz AR measurement for step height, foot position or heel-rise height reference
Optional inclinometer or video for technique review
Measurz platform for side, reps, symptoms, compensations and retest comparison

Step-by-Step Protocol

1. Set the step, box or raised edge to a standardised height.
2. Ask the client to place the forefoot of the tested leg on the step.
3. Record the side tested first.
4. Allow light fingertip support for balance if required, but keep this consistent for retesting.
5. Ask the client to keep the knee straight unless a bent-knee version is intentionally selected.
6. Set the cadence if using a metronome.
7. Ask the client to lower the heel to the defined bottom position.
8. Ask the client to rise as high as possible onto the ball of the foot.
9. Count only valid repetitions that meet the ROM, height, control and cadence criteria.
10. Stop when heel height drops, bottom range changes, cadence is missed, knee position changes, balance is lost, symptoms become unacceptable or the client chooses to stop.
11. Record valid repetitions, side tested and reason for stopping.
12. Repeat on the opposite side after consistent rest.

Scoring and Interpretation

Record:

Side tested
Valid repetitions completed
Step height
Forefoot position
Hand support
Knee position
Cadence
Bottom range
Heel-rise height standard
Pain or symptoms
Fatigue
Compensation
Reason for stopping
Retest date

A higher repetition score generally suggests better step-based calf endurance under the selected protocol. However, interpretation should consider step height, ROM, cadence, support, heel height, ankle mobility, fatigue and symptoms.

The most useful comparisons are:

Left versus right
Baseline versus retest
Step version compared with previous step version
Symptom response across sessions

Avoid comparing ground and step versions as if they are identical tests. The step version usually changes ROM and may increase demand.

Normative Data, Benchmarks or Reference Values

Single-leg heel-rise research has reported reference values and reliability data, but results vary according to whether the test is performed on flat ground, a step, an incline or with a device that tracks heel height and work.

A simple practical field guide for step-based testing is:

25+ valid repetitions: strong current endurance
15–24 valid repetitions: moderate current endurance
5–14 valid repetitions: developing current endurance
Under 5 valid repetitions: low current endurance

These values are practical guide ranges only. Use the client’s baseline, side-to-side comparison, age and activity context, symptom response and retest consistency as the primary benchmarks.

Reliability and Validity

Reliability depends on consistent step height, forefoot position, bottom range, cadence, hand support, knee position, heel-rise height standard, warm-up, rest period and stopping criteria.

The single-leg heel-rise test has been studied as a practical assessment of calf muscle-tendon unit endurance. Recent research supports standardising the protocol and using clear performance criteria such as repetitions, total work, vertical displacement and peak heel-rise height where available.

Validity should still be interpreted cautiously. The test may provide useful information about plantar-flexor endurance through a step-based range, but it should not be used alone to diagnose injury risk, Achilles tendon status, calf function or readiness.

Common Errors and Limitations

Common errors include:

Changing step height
Changing forefoot position
Using too much hand support
Changing cadence
Bending the knee as fatigue develops
Reducing heel height but continuing to count reps
Not lowering to the same bottom position
Bouncing through the movement
Rolling the ankle inward or outward
Losing balance
Not recording side tested
Comparing ground and step versions directly
Ignoring pain, Achilles symptoms or cramping
Continuing after form failure

Limitations include balance influence, motivation, fatigue, ankle mobility, Achilles sensitivity, inconsistent ROM and protocol variation.

Practical Applications

The Calf Raise – Single Leg – Step Test can help professionals:

Monitor calf endurance through a larger ROM
Compare left and right sides
Track response to training
Record calf or Achilles symptom response
Monitor fatigue tolerance
Support running, hopping and lower-limb load-tolerance decisions when combined with other findings
Compare step and ground tolerance when both are standardised

It is most useful when interpreted alongside ground calf raise testing, hop tests, ankle ROM, calf strength, Achilles symptoms, running tolerance, balance and lower-limb movement quality.

How to Record This in Measurz / MAT

Record:

Test name
Version: single-leg step
Side tested
Repetitions completed
Step height
Forefoot position
Hand support
Knee position
Cadence
Bottom range
Heel-rise height notes
Pain score
Symptom location
Fatigue or cramping
Compensation
Reason for stopping
Retest date

Use the Measurz rep counter to count valid repetitions. Use the metronome to standardise cadence. Use AR measurement or video notes to document step height, foot position, body alignment or heel-rise height if needed.

FAQs

What does the Calf Raise – Single Leg – Step Test measure?

It measures single-leg calf endurance and plantar-flexor strength-endurance using a step-based range of motion.

Is it the same as the ground version?

No. The step version usually allows greater ankle range and should be recorded separately.

Should both sides be tested?

Yes. Side-to-side comparison is one of the most useful parts of the test.

What is a good score?

There is no single universal score for every client. Use baseline comparison, side-to-side comparison and repeat testing with the same setup.

Should the heel lower below the step?

Only if that is part of the selected protocol. The bottom range must be recorded and repeated consistently.

Key Takeaways

The Calf Raise – Single Leg – Step Test assesses plantar-flexor endurance using a step-based range.
The primary score is valid repetitions completed.
Step height, foot position, cadence, bottom range and heel height must be standardised.
Ground and step versions should be recorded separately.
The result should not be used alone to diagnose injury risk or readiness.
Measurz can track reps, side, setup, symptoms, compensation and retest progress.

References

Hebert-Losier, K., Wessman, C., Alricsson, M., & Svantesson, U. (2017). Updated reliability and normative values for the standing heel-rise test in healthy adults. Physiotherapy, 103(4), 446–452.

Schrefl, A., Kolokythas, N., Stamm, M., Erlacher, D., & Schärli, A. (2024). Reliability of a standardized protocol of the Single Leg Heel Rise Test. Current Issues in Sport Science, 9, Article 009. https://doi.org/10.36950/2024.9ciss009

van der Vlist, A. C., et al. (2025). Normative values for calf muscle strength-endurance in the general population. Brazilian Journal of Physical Therapy. https://doi.org/10.1016/j.bjpt.2025.101188