GRIPLAB
NHANES 2011–2012 · adults 18–80 · U.S. population reference
Participant & safety check
CDC-aligned test protocol
- Adjust the handle so the second joint of the index finger is about 90°.
- Stand with feet hip-width apart, head straight, arm extended at your side, wrist neutral, and device not touching the body.
- Exhale and squeeze quickly and as hard as safely possible. Alternate hands.
- Complete 3 trials per hand, allowing about 60 seconds before testing the same hand again.
Save or share
Analysis is separate from saving. A profile ID prevents unrelated anonymous tests from being combined.
The result card never includes your profile ID. Review the card before sharing it.
General training & retest plan
2–3 sets of 8–12 comfortable, controlled grip repetitions per hand. Stop well before pain or loss of form.
Use light wrist flexion/extension and finger-opening resistance. Keep both sides at equal volume unless a clinician advises otherwise.
Use at least 2 nonconsecutive resistance-training sessions per week and include full-body training, not grip work alone.
Retest after 4 weeks using the same device, handle setting, posture, time of day, unit, and 3-trial protocol.
General resistance-training principles follow the 2009 and 2026 American College of Sports Medicine Position Stands for healthy adults. Grip-specific loading should remain conservative without professional assessment.
Progress by profile
Records stored on this device
| Date | Name | Profile ID | Age / Ref. | Combined | Band | Actions |
|---|
Data provenance & calculation method
How the reference table was produced
Handexer joined the official MGX_G and DEMO_G files by respondent sequence number; retained adults age 18–80 who completed both hands and had a valid Combined Grip value; applied the CDC examination weight WTMEC2YR; then calculated weighted empirical P10, P25, P50, P75 and P90 within 10-year age bands and reference sex. Final analytic n = 4,967. Combined Grip is the official MGDCGSZ definition: the largest reading from each hand, summed in kilograms.
No normal-distribution assumption or invented standard deviation is used. The app reports a percentile band, because these public reference cut points do not justify a falsely exact individual percentile.
Reference cut points used by this app
| Reference | Age | n | P10 | P25 | P50 | P75 | P90 |
|---|
Important limitations
- NHANES 2011–2012 represents the U.S. civilian, noninstitutionalized population and may not transfer directly to another country or clinical population.
- Device type, calibration, handle position, posture, effort, pain and protocol differences can change results.
- Percentile position is descriptive, not a diagnosis or treatment recommendation.
- Local browser storage is convenient for personal use but is not secure multi-user cloud storage.