Strength Endurance: Calf Raise – Single Leg – Ground

Calf endurance is important for walking, running, hopping, jumping, change of direction, stair climbing and many field- and court-based sports. The single-leg calf raise is one of the most common practical tests for assessing plantar-flexor endurance because it requires minimal equipment and can be repeated over time.

The ground version is usually easier to set up than a step or incline version because it can be performed on a flat surface. However, it may provide less range than a step version because the heel does not lower below forefoot level.

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

Quick Summary

Test name: Calf Raise – Single Leg – Ground
Also known as: Single-Leg Calf Raise Test, Single-Leg Heel Raise Test, Heel Rise Endurance Test
Category: Calf endurance / plantar-flexor strength-endurance
Primary score: Valid repetitions completed
Best use: Baseline testing, side-to-side comparison, retesting and calf endurance monitoring
Key limitation: Heel height, cadence, knee position and balance support strongly influence the result

What Is This Assessment?

The Calf Raise – Single Leg – Ground Test measures how many controlled single-leg heel raises a client can complete from a flat surface.

The client stands on one leg, uses light fingertip support if needed for balance, rises onto the ball of the foot, then lowers with control. The test continues until the client can no longer complete valid repetitions according to the selected protocol.

The exact setup must be recorded because small changes in hand support, knee position, cadence, heel height and stopping criteria can change the result.

Why It Is Used

The test may be used to assess:

Plantar-flexor endurance
Calf strength-endurance
Side-to-side differences
Fatigue 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 surface, cadence, hand support, 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
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, cadence, ankle mobility, knee position, symptoms and motivation.

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 single-leg balance, recent trauma, unacceptable symptoms during heel raise or inability to perform the movement safely.

Equipment Required

Flat floor surface
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 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. Ask the client to stand on a flat surface.
2. Record the side tested first.
3. Allow light fingertip support for balance if required, but keep this consistent for retesting.
4. Ask the client to keep the knee straight unless a bent-knee version is intentionally selected.
5. Set the cadence if using a metronome.
6. Ask the client to rise as high as possible onto the ball of the foot.
7. Ask the client to lower with control until the heel returns to the ground or the defined start position.
8. Count only valid repetitions that meet the height, control and cadence criteria.
9. Stop when heel height drops, cadence is missed, knee position changes, balance is lost, symptoms become unacceptable or the client chooses to stop.
10. Record valid repetitions, side tested and reason for stopping.
11. Repeat on the opposite side after consistent rest.

Scoring and Interpretation

Record:

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

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

The most useful comparisons are:

Left versus right
Baseline versus retest
Ground version compared with previous ground version
Symptom response across sessions

Avoid comparing ground and step versions as if they are identical tests. The step version usually changes range of motion and loading demands.

Normative Data, Benchmarks or Reference Values

Single-leg heel-rise research has reported reference values and reliability data, but values vary by age, sex, activity level, BMI, incline or surface, cadence, height measurement and stopping criteria.

A simple practical field guide for flat-ground testing is:

30+ valid repetitions: strong current endurance
15–29 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 surface, cadence, foot position, 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 the value of standardising the protocol, and normative work has shown that personal characteristics such as age, sex, BMI and activity level can influence performance.

Validity should still be interpreted cautiously. The test may provide useful information about plantar-flexor endurance, 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:

Using too much hand support
Changing cadence
Bending the knee as fatigue develops
Reducing heel height but continuing to count reps
Bouncing through the movement
Rolling the ankle outward or inward
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, inconsistent heel height and protocol variation.

Practical Applications

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

Monitor calf endurance
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
Educate clients using a simple repeatable endurance measure

It is most useful when interpreted alongside step 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 ground
Side tested
Repetitions completed
Surface
Hand support
Knee position
Cadence
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 foot position, body alignment or heel-rise height if needed.

FAQs

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

It measures single-leg calf endurance and plantar-flexor strength-endurance on a flat surface.

Is it the same as the step version?

No. The step version usually allows more ankle dorsiflexion and greater ROM, so it 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 hand support be allowed?

Light fingertip support can be allowed for balance, but it must be recorded and repeated consistently.

Key Takeaways

The Calf Raise – Single Leg – Ground Test assesses plantar-flexor endurance on a flat surface.
The primary score is valid repetitions completed.
Cadence, heel height, knee position and hand support 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