The Grip Strength Bent Arm Neutral Test measures how much grip force a client can produce while the elbow is bent and the forearm is held in a neutral position, usually with the thumb facing upward. This position is closely aligned with many standard handgrip dynamometry protocols and is one of the most practical ways to assess maximal grip strength.

A gripper is used to measure handgrip force during maximal or repeated gripping assessments. When used on its own, a gripper primarily measures peak grip force, which is the highest force value produced during the test. When gripper data are recorded with Measurz, results can be used to support peak force, side-to-side comparison, repeated-trial comparison, progress tracking, force relative to body mass, fatigue or repeated-effort monitoring where the protocol supports it, and time-based force analysis where compatible data are available.

For most routine bent-arm neutral grip tests, peak grip force is usually the main metric. Best trial, average force, side-to-side difference, dominant versus non-dominant comparison and grip strength as a percentage of body weight may also be useful. Fatigue index should only be used if repeated or sustained gripping efforts are part of the protocol.

The result can support assessment reasoning and progress tracking, but it does not diagnose hand, wrist, elbow or shoulder pain, confirm pathology, explain symptoms on its own, clear sport participation, clear work duties or replace professional judgement.

What Is the Grip Strength Bent Arm Neutral Test?

The Grip Strength Bent Arm Neutral Test is a maximal isometric grip assessment performed with the elbow bent and the forearm in neutral. Neutral means the thumb usually points upward rather than the palm facing up or down. The client squeezes the gripper as hard as possible while maintaining the same shoulder, elbow, forearm and wrist position.

This test primarily measures grip force output in a specific setup. It reflects the combined contribution of the finger flexors, thumb position, wrist and forearm stabilisers, hand size, grip span, effort quality and confidence.

The bent-arm neutral position is widely used because it is practical, repeatable and closely resembles standard Jamar-style handgrip testing. Standard normative data are more commonly available for this position than for bent-arm supinated or pronated variations.

Consistent setup matters because small changes in handle setting, elbow angle, forearm position, wrist position, shoulder position, grip span, hand dominance and instructions can change the result.

This test does not fully measure hand function, dexterity, endurance, pain source, tissue status, sport performance, work capacity or whole upper-limb strength on its own.

Step-by-Step Protocol / Practice

1. Prepare the client

Explain that the test measures how strongly they can squeeze the gripper while the elbow is bent and the forearm is neutral. Record baseline symptoms, hand pain, wrist pain, elbow symptoms, shoulder symptoms, paraesthesia, recent gripping workload, recent training load, sport exposure, work exposure and confidence with maximal gripping.

Ask which hand is dominant. Record whether the dominant or non-dominant hand is tested first.

Use 1–2 submaximal practice trials before maximal testing so the client understands the position, handle setting and effort required.

2. Set the client position

Use a repeatable position such as:

• Client seated upright
• Shoulder adducted and relaxed beside the body
• Shoulder neutrally rotated
• Elbow flexed to approximately 90 degrees
• Forearm neutral, with thumb facing upward
• Wrist between neutral and slight extension
• Hand holding the gripper without excessive wrist flexion, extension or deviation
• Feet supported if seated
• Trunk upright and still

Record the exact position used. If a standing protocol is used, record that separately and do not compare it directly with seated results unless the same protocol is repeated.

3. Set up the gripper

Use the same gripper device for baseline and retesting. Record the device type and whether it reports force in kilograms, pounds, Newtons or another unit.

Check that the gripper is functioning correctly and that the display or recording system is ready before each trial.

When recording with Measurz, document:

• Test name
• Hand tested
• Hand dominance
• Shoulder position
• Elbow position
• Forearm position
• Wrist position
• Handle setting
• Number of trials
• Contraction duration
• Rest period
• Peak force
• Symptoms
• Notes about compensation or invalid trials

4. Set the handle position

Set the gripper handle to a consistent span. Handle setting is one of the most important parts of grip testing because a setting that is too narrow or too wide can reduce force output.

Many standard Jamar-style protocols use the second handle position, but the most important practical requirement is that the handle setting is recorded and repeated. If the setting is adjusted for hand size, record that clearly.

Record:

• Handle setting number or distance
• Whether the same setting is used for both hands
• Whether the setting is adjusted for hand size
• Whether the setting is repeated at retest

5. Stabilise the position

Ask the client to keep the elbow bent, forearm neutral and wrist position steady. The shoulder should stay relaxed and the trunk should not lean.

Watch for:

• Wrist flexion during squeezing
• Wrist extension during squeezing
• Wrist deviation
• Forearm rotating into supination or pronation
• Elbow lifting or dropping
• Shoulder hiking
• Trunk leaning
• Breath holding
• Pain-related guarding
• Gripper slipping

The aim is a controlled maximal grip effort in the same neutral forearm position each time.

6. Give clear instructions

Use consistent instructions such as:

“Hold the gripper with your thumb facing up.”
“Keep your elbow bent and close to your side.”
“When I say go, squeeze as hard as you can.”
“Keep squeezing until I say stop.”
“Keep your wrist and arm still.”
“Keep breathing.”
“Tell me if you feel pain, tingling, numbness or anything unusual.”

Use the same wording at retest where possible.

7. Record trials

A practical routine protocol is:

• 1–2 practice trials per hand
• 2–3 recorded maximal trials per hand
• Each maximal squeeze held for approximately 3–5 seconds
• 30–60 seconds rest between maximal trials
• Longer rest if fatigue, pain or cramping occurs

Record either the best trial or the average of recorded trials. Best trial is commonly useful for maximal grip strength. Average force may be useful when repeated trials are used to reduce the influence of one unusually high or low attempt.

Use the same scoring method at retest.

8. Identify invalid trials

Repeat or mark a trial as invalid if:

• The forearm rotates away from neutral
• The wrist position changes substantially
• The elbow angle changes
• The shoulder lifts or braces
• The trunk leans
• The gripper slips
• The handle setting changes
• The client starts before the recording is ready
• Pain, tingling, numbness or cramping limits effort
• The client does not understand the task
• The effort is clearly submaximal

9. Record symptoms

Record hand, wrist, forearm, elbow or shoulder symptoms during and after testing. Also record tingling, numbness, cramping, skin discomfort, callus discomfort, apprehension and confidence.

Do not repeatedly test through worsening symptoms, significant paraesthesia, strong pain or severe cramping.

For retesting, match the same device, handle setting, hand order, shoulder position, elbow angle, forearm position, wrist position, contraction duration, rest period, scoring method and symptom recording.

Why It Is Used

The Grip Strength Bent Arm Neutral Test may be useful for:

• Baseline grip strength assessment
• Right-left comparison
• Dominant versus non-dominant hand comparison
• Progress tracking
• Strength profiling
• Monitoring change over time
• Client education
• General physical capacity context
• Sport contexts where gripping, pulling, holding or bracing are relevant
• Workplace contexts involving carrying, lifting, pulling, pushing, tool use or manual handling
• Fitness and performance contexts
• Comparing grip force with wrist, elbow and shoulder strength tests
• Comparing absolute grip force with grip strength as a percentage of body weight

This test should support assessment reasoning. It should not be used as a stand-alone diagnostic, clearance or performance-prediction tool.

What It Measures

The test primarily measures grip force output in a bent-arm, neutral forearm position.

It may provide useful information about:

• Maximal grip force
• Right-left difference
• Dominant versus non-dominant hand difference
• Grip force relative to body weight
• Change from baseline
• Confidence with maximal gripping
• Symptom response during gripping
• Repeated-trial consistency

It does not fully measure:

• Hand function
• Dexterity
• Endurance, unless a repeated or sustained protocol is used
• Work capacity
• Sport performance
• Pain source
• Tendon status
• Nerve function
• Readiness for sport or work

Understanding the Result, Reference Values and What to Look For

What a higher or lower result may suggest

A higher score may suggest greater grip force output in that specific bent-arm neutral test setup. A lower score may suggest reduced grip force output, but the reason should be interpreted carefully.

Lower grip force may be influenced by pain, apprehension, poor familiarisation, fatigue, guarding, poor positioning, wrist angle, elbow position, shoulder position, hand dominance, handle setting, grip span, device type, skin discomfort, callus discomfort, grip friction, breath holding, client confidence, motivation and effort.

One result should not be interpreted in isolation. Interpretation is strongest when the same setup is repeated over time. The result should be interpreted alongside symptoms, confidence, hand dominance, sport or work demands, related tests and functional goals.

What can influence the result

Important influences include:

• Pain
• Apprehension
• Poor familiarisation
• Fatigue
• Guarding
• Poor positioning
• Wrist angle
• Elbow position
• Shoulder position
• Hand dominance
• Handle setting
• Grip span
• Device type
• Skin discomfort
• Callus or grip friction
• Breath holding
• Client confidence
• Motivation and effort
• Recent training or manual workload
• Forearm position, including whether the forearm is neutral, supinated or pronated

Body weight percentage reference context

Approximate grip strength as a percentage of body weight:

• Adult men: approximately 55–70% body weight
• Adult women: approximately 35–50% body weight
• Older men: approximately 40–60% body weight
• Older women: approximately 25–40% body weight
• Strength-trained or grip-dominant sport clients: may score higher depending on body size, sport, training history and protocol

These values should be used as context, not pass/fail scores.

Standard handgrip research shows that grip strength is usually higher in men than women and generally declines with age. Forearm position also matters, with neutral, supinated and pronated grip positions producing different values in some protocols.

For this test, the strongest comparisons are usually:

• The client’s own baseline
• Right versus left hand
• Dominant versus non-dominant hand
• Grip strength as percentage of body weight
• Repeated tests using the same setup
• Symptoms during testing
• Sport, work or training demands
• Related wrist, elbow and shoulder tests

Reference values can help provide context, but they should not be used as diagnostic, clearance or pass/fail cut-offs.

Normative, reference and comparative values

The bent-arm neutral forearm position is one of the best-supported handgrip testing positions because many standard Jamar-style norms use a similar setup: seated, shoulder adducted and neutrally rotated, elbow flexed to approximately 90 degrees, forearm neutral, and wrist near neutral or slight extension.

Closest available reference data include:

• Large Jamar-style datasets provide adult grip strength values stratified by age, sex and hand side.
• Adult grip strength commonly peaks in young to middle adulthood and tends to decline with older age.
• Men generally produce higher absolute grip force than women in population datasets.
• The dominant hand is often stronger, but this difference varies by person, sport, work exposure and protocol.
• Australian population-based grip strength data also show that age and sex are major influences on grip strength.
• Grip strength is influenced by body size, but higher body weight does not automatically mean better relative grip strength.
• Device type matters. Hydraulic, electronic and spring-based grippers may not produce directly interchangeable values.

Because this test closely resembles standard Jamar-style positioning, standard handgrip norms may be useful as broad context. However, the exact device, handle setting, scoring method and test instructions should still be matched as closely as possible before making comparisons.

Practical interpretation priorities

Use this order:

1. Compare with the client’s own baseline.
2. Compare right and left hands where relevant.
3. Consider hand dominance.
4. Consider grip strength relative to body weight.
5. Consider symptoms during and after testing.
6. Consider confidence and effort quality.
7. Review whether compensations were present.
8. Compare with related upper-limb, shoulder, elbow, wrist or pinch strength tests.
9. Relate the result to the client’s sport, work, exercise or daily-life demands.
10. Retest under the same conditions to monitor change.
11. Do not use reference values as pass/fail criteria.

What to look at for each relevant gripper or Measurz metric

Peak force
Use for maximum grip force output, baseline grip strength, right-left comparison, dominant versus non-dominant hand comparison, progress tracking and comparing force across retests.

Look for best score or average score, consistent handle setting, consistent body position, side-to-side difference, change from baseline, grip force as percentage of body weight, pain or compensation during maximal effort.

Average force
Use for summarising repeated trials, reducing the influence of one unusually high or low attempt and tracking consistent grip output.

Look for whether repeated trials are consistent, whether one trial is unusually high or low, whether average force changes over time and whether fatigue affects later trials.

Force relative to body mass
Use for providing context across different body sizes and for sport, workplace or performance contexts where relative strength matters.

Look for grip force expressed as percentage of body weight, whether absolute force and percentage of body weight tell a different story, whether body-size context matters for the client’s goal and whether percentage of body weight improves over time using the same setup.

Side-to-side difference
Use for right-left comparison, dominant versus non-dominant hand comparison and monitoring asymmetry over time.

Look for whether one hand is consistently lower, whether the difference is expected due to dominance, sport or work demands, whether symptoms, confidence or recent injury influence one side and whether the same position was maintained on both sides.

Time to peak
Use when the device captures how long it takes the client to reach peak grip force.

Look for delayed peak force, faster time to peak across retests and whether a slower time reflects caution, pain, poor cueing or performance differences.

Rate of force development
Use when rapid grip force matters, such as sport, tactical, workplace or performance contexts.

Look for early force production, whether rapid grip output changes over time, whether rate of force development improves while peak force stays similar and whether confidence and familiarisation influence the result.

Assessing and Providing Context for Different Client Populations

Youth clients
Consider growth, maturation, hand size, coordination, attention, training age, grip span and familiarisation. Handle setting is especially important because smaller hands may not suit the same grip span as adults.

Adults and general fitness clients
Use the test for baseline strength, progress tracking, grip strength as percentage of body weight, confidence with gripping tasks and general exercise goals.

Older adults
Grip strength can provide useful context for carrying, opening objects, general physical capacity and daily tasks. Use adequate rest periods and consider fatigue, confidence and function.

Athletes and sport clients
Relevant sports may include climbing, grappling, martial arts, racquet sports, throwing sports, gymnastics, rowing, weightlifting and field or court sports. Peak grip force alone does not equal sport performance, but it can support a broader strength profile.

Workplace and manual task clients
Consider occupational demands such as gripping tools, carrying, lifting, pulling, pushing, manual handling and repeated hand tasks. Do not use one score to clear work duties.

Clients returning after injury
Use the test to monitor grip force output, confidence, symptom response and comparison with the opposite side. Strength alone should not confirm readiness.

Clients with pain or persistent symptoms
Pain, fear, guarding, fatigue, apprehension and confidence may reduce grip force. Record symptoms and compare the result with related tests.

Higher body mass clients
Absolute force and force relative to body mass may both be useful. Avoid assumptions based on body size and interpret results in relation to the client’s goals, symptoms and task demands.

Smaller hands or different hand sizes
Handle setting, grip span and hand size can strongly influence results. Record the chosen setting and keep it consistent for retesting unless there is a clear reason to change it.

Reliability, Validity and Measurement Considerations

Repeatability improves when the same setup is used each time. Standardise and record:

• Same test position
• Same device
• Same handle setting
• Same grip span
• Same hand tested first
• Same hand dominance recording
• Same shoulder position
• Same elbow position
• Same forearm position
• Same wrist position
• Same instructions
• Same contraction duration
• Same rest period
• Same scoring method
• Same symptom and compensation recording

This bent-arm neutral position is close to standard handgrip testing recommendations. However, reliability still depends on consistent device placement, handle setting, instructions, number of trials, rest period and scoring method.

Common Errors and Limitations

Common errors include:

• Inconsistent handle setting
• Inconsistent elbow position
• Inconsistent wrist position
• Forearm drifting out of neutral
• Excessive wrist flexion, extension or deviation
• Shoulder compensation
• Trunk leaning
• Breath holding
• Poor familiarisation
• Testing too quickly between trials
• Comparing different devices directly
• Treating the score as a diagnosis
• Ignoring hand dominance
• Ignoring hand size or grip span

Limitations include:

• Testing is setup-dependent.
• Grip strength does not fully represent hand function.
• Grip strength does not fully represent sport performance.
• Grip strength does not fully represent work capacity.
• Pain, fear or guarding can reduce force output.
• Peak force does not measure endurance, dexterity or coordination.
• Published norms are not universal across devices or protocols.
• Neutral grip values should not be treated as identical to supinated or pronated grip values.

Practical Applications

The Grip Strength Bent Arm Neutral Test may be useful for:

• Baseline grip strength assessment
• Right-left comparison
• Dominant versus non-dominant comparison
• Progress tracking
• Strength profiling
• Client education
• Sport preparation
• Workplace context
• Monitoring response to exercise or intervention
• Comparing with pinch, wrist, elbow or shoulder tests
• General physical capacity context
• Comparing absolute grip force with grip strength as percentage of body weight

Ideas to Make the Result Better

If grip force is low on both sides, consider assessing handle setting, grip span, familiarisation, wrist strength, elbow strength, shoulder position, general strength and recent workload.

If one hand is much lower, compare with hand dominance, symptoms, previous injury, sport demands, work exposure, wrist strength, pinch strength and shoulder or elbow findings.

If body weight percentage is low, consider whether absolute force, body size, training history, work demands and client goals tell the same story.

If pain limits the result, record the symptom location, review the test position and compare with related findings rather than forcing repeated maximal trials.

If grip force is good but function is limited, consider assessing dexterity, endurance, pinch strength, wrist range of motion, elbow strength, shoulder strength, confidence and task-specific demands.

If fatigue appears quickly, consider whether repeated gripping, sustained holds, rest periods, workload, sleep, recovery or symptoms are influencing performance.

If the client is improving, keep the same setup and monitor whether grip force, symptoms, confidence and task tolerance improve together.

Recommended Standard Protocol Summary

Position: Seated upright or chosen repeatable position
Shoulder position: Adducted, relaxed and neutrally rotated
Elbow position: Bent, commonly around 90 degrees
Forearm position: Neutral, thumb facing upward
Wrist position: Neutral to slight extension, recorded consistently
Hand tested: Record right, left and dominance
Handle setting: Record gripper handle setting or grip span
Trials: 1–2 practice trials, then 2–3 recorded maximal trials per hand
Contraction duration: 3–5 seconds
Rest: 30–60 seconds between maximal trials
Metric: Peak force, with average force if repeated-trial summary is used
Additional context: Side-to-side difference, dominance, grip force as percentage of body weight, symptoms and confidence
Final score: Best trial or average of recorded trials
Key retesting requirement: Same device, handle setting, body position, elbow angle, forearm position, wrist position, instructions, contraction duration, rest and scoring method

FAQs

What does this test measure?

It measures maximal grip force in a bent-arm, neutral forearm position.

What does the test position mean?

Bent arm means the elbow is flexed, commonly around 90 degrees. Neutral forearm means the thumb usually points upward.

Is this the same as a standard grip strength test?

It is very similar to many standard handgrip dynamometry protocols, especially those using the elbow at 90 degrees, forearm neutral and wrist near neutral.

Why use body weight percentage?

Grip strength as a percentage of body weight can provide useful context across different body sizes. It should support interpretation, not act as a pass/fail score.

What does the gripper measure by itself?

A gripper primarily measures peak grip force during the squeeze. With Measurz, results can also support side-to-side comparison, repeated-trial comparison, progress tracking and force relative to body mass.

Can this test diagnose hand, wrist or elbow pain?

No. It can measure grip force and symptom response, but it does not diagnose a condition or explain symptoms on its own.

Should both hands be tested?

Yes, where appropriate. Testing both hands allows right-left and dominant versus non-dominant comparison.

What makes the test more repeatable?

Use the same gripper, handle setting, elbow angle, forearm position, wrist position, hand order, instructions, contraction duration, rest period and scoring method.

Key Takeaways

• The Grip Strength Bent Arm Neutral Test measures maximal grip force with the elbow bent and forearm neutral.
• Peak grip force is usually the main routine metric.
• This protocol closely matches many standard Jamar-style handgrip testing positions.
• Handle setting, grip span, wrist position and elbow position strongly influence the result.
• Grip strength as a percentage of body weight can provide useful context, but it is not a pass/fail score.
• The strongest comparisons are usually the client’s own baseline, right-left comparison and repeated testing using the same setup.
• Measurz should capture hand tested, dominance, position, handle setting, peak force, symptoms, confidence, compensations and retesting conditions.

References

Bohannon, R. W. (1997). Reference values for extremity muscle strength obtained by hand-held dynamometry from adults aged 20 to 79 years. Archives of Physical Medicine and Rehabilitation, 78(1), 26–32. https://doi.org/10.1016/S0003-9993(97)90005-8

Dodds, R. M., Syddall, H. E., Cooper, R., Benzeval, M., Deary, I. J., Dennison, E. M., Der, G., Gale, C. R., Inskip, H. M., Jagger, C., Kirkwood, T. B. L., Lawlor, D. A., Robinson, S. M., Starr, J. M., Steptoe, A., Tilling, K., Kuh, D., & Sayer, A. A. (2014). Grip strength across the life course: Normative data from twelve British studies. PLoS ONE, 9(12), e113637. https://doi.org/10.1371/journal.pone.0113637

Massy-Westropp, N. M., Gill, T. K., Taylor, A. W., Bohannon, R. W., & Hill, C. L. (2011). Hand grip strength: Age and gender stratified normative data in a population-based study. BMC Research Notes, 4, 127. https://doi.org/10.1186/1756-0500-4-127

Mathiowetz, V., Kashman, N., Volland, G., Weber, K., Dowe, M., & Rogers, S. (1985). Grip and pinch strength: Normative data for adults. Archives of Physical Medicine and Rehabilitation, 66(2), 69–74.

Roberts, H. C., Denison, H. J., Martin, H. J., Patel, H. P., Syddall, H., Cooper, C., & Sayer, A. A. (2011). A review of the measurement of grip strength in clinical and epidemiological studies: Towards a standardised approach. Age and Ageing, 40(4), 423–429. https://doi.org/10.1093/ageing/afr051

Werle, S., Goldhahn, J., Drerup, S., Simmen, B. R., Sprott, H., & Herren, D. B. (2009). Age- and gender-specific normative data of grip and pinch strength in a healthy adult Swiss population. Journal of Hand Surgery European Volume, 34(1), 76–84. https://doi.org/10.1177/1753193408096763