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Assessment

Grip Strength (Handgrip Dynamometry)

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strengthgripdynamometerhandgripnormsbiomarker

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DefinitionA short reference note, not a full lesson.
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Definition

Squeeze a calibrated handgrip dynamometer as hard as you can; the best of several trials (often summed across hands) indexes general muscular strength and is a validated marker of health and longevity.

Detail

Handgrip dynamometry is a quick, reliable static-strength test using a hand dynamometer (commonly Jamar adjustable-grip). Beyond rating forearm/hand strength, grip strength correlates with whole-body strength and is a well-established predictor of all-cause mortality, disability, and frailty, especially in older adults — hence its use as a clinical biomarker (e.g., in sarcopenia screening).

Protocol: adjust grip to hand size; stand (or sit per protocol) with the shoulder adducted, elbow ~90° or fully extended per protocol, wrist neutral; squeeze maximally for 3–5 s with no arm swinging. Take 2–3 trials per hand with ~1 min rest; record the highest value per hand (kg); report each hand and/or the sum of both hands against age/sex norms.

Interpretation: norms are age- and sex-specific (men higher). Low grip strength thresholds used for sarcopenia (EWGSOP2): <27 kg men, <16 kg women. (cutoffs differ slightly by consensus group/population)

Key facts

  • Static max squeeze on a calibrated dynamometer; 2–3 trials/hand, record the highest (kg).
  • Indexes general strength; validated predictor of mortality/frailty/disability.
  • Norms age- and sex-specific; men higher.
  • Example sarcopenia low-grip cutoffs (EWGSOP2): <27 kg (men), <16 kg (women).

Connections

Sources

Cited in text — not yet linked
ACSM's Guidelines for Exercise Testing and Prescription (10th/11th ed.); EWGSOP2 sarcopenia consensus (Cruz-Jentoft et al., 2019); standard handgrip dynamometry norms.

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Atlas Connections

Forearm Flexors
The forearm flexors — flexor carpi ulnaris and flexor carpi radialis — flex the wrist; trained with wrist curls.
Muscular Strength Norms (1RM Ratios & Grip)Closely related
Raw 1RM means little without context — strength norms express it relative to body weight (e.g., bench-press ratio) by age and sex, sorting results from poor to excellent.
1RM (One-Repetition Maximum) Testing
The heaviest load that can be lifted once with good form through a full range — the criterion measure of dynamic muscular strength, found by a structured warm-up-and-build protocol.
Timed Up-and-Go (TUG) Test
Time someone rising from a chair, walking 3 m, turning, returning, and sitting; longer times indicate impaired mobility and higher fall risk in older adults.
Seniors (Redirect → Older Adults)
"Seniors" content lives in the canonical Older Adults / Seniors module.