De greepkracht is een van de eenvoudigste en krachtigste zelfcontroles om te beoordelen hoe goed u veroudert. Een zwakkere knijpkracht voorspelt een korter leven, meer hartziekten, meer invaliditeit in latere levensjaren en snellere cognitieve achteruitgang.
Dit verband geldt voor bijna 140.000 volwassenen in de PURE-studie en nog eens drie miljoen personen in gecombineerde data.
Findings & Outcomes
What It Predicts
PURE followed nearly 140,000 adults across 17 countries. Each 11 lb (5 kg) less grip came with about a 16% higher death rate, and a weaker grip predicted death more strongly than blood pressure did.
The pattern repeats at scale. Pooling 42 cohorts and three million people reproduced the link, in men and women alike, and it held after excluding those who were already sick. In the largest cohort, grip showed no association with diabetes, fractures, fall injuries or chest infections, so it points to no single disease. Most of this evidence is observational. A low reading partly picks out people already ill or frail, so the number tells you as much about your health now as about your future.
The Research & Studies
Everything here is based on the research we have collected and checked, sorted into groups and ordered with the strongest evidence first. Click any claim to open the studies behind it.
Progress Markers
Elke 11 lb (5 kg) minder knijpkracht, 16% hoger sterftecijfer over 140,000 volwassenen in 17 landen
In a study of nearly 140,000 people across 17 countries, every 11 lb (5 kg) drop in grip came with about a 16% higher chance of dying over the next few years, and grip forecast death better than blood pressure did.
De Prospective Urban Rural Epidemiology (PURE)-studie mat knijpkracht eenmalig met een Jamar-dynamometer bij 139,691 volwassenen van 35 tot 70 jaar en volgde hen gedurende een mediaan van 4.0 jaar. Elke vermindering van 11 lb (5 kg) hing samen met sterfte door alle oorzaken (HR 1.16, 95%-BI 1.13 tot 1.20) en cardiovasculaire sterfte, onafhankelijk van leeftijd, opleiding, werk, lichaamsbeweging, tabak en alcohol. De auteurs positioneren knijpkracht als een eenvoudige, goedkope prognostische marker van algemene gezondheid, geen behandeldoel.
Who this may not transfer to:Unusually well balanced for this literature at 58% women, spread across 17 countries of differing income levels.
The study · 1
Leong et al., prognostic value of grip strength: findings from the PURE study · Lancet 2015;386(9990):266-273
Elke 11 lb (5 kg) minder knijpkracht, ongeveer 20% hogere cardiovasculaire sterfte over 500,000 volwassenen in het VK
Bij ongeveer 500,000 volwassenen in het VK ging een zwakkere knijpkracht samen met een hogere kans op zowel het ontwikkelen van hartziekte als eraan overlijden, bij mannen en vrouwen gelijkelijk.
UK Biobank mat knijpkracht bij ongeveer 500,000 volwassenen en volgde hen gemiddeld 7.1 jaar. Per 11 lb (5 kg) lagere knijpkracht steeg de sterfte door alle oorzaken (HR 1.20 bij vrouwen, 1.16 bij mannen) en de cardiovasculaire sterfte (1.19 bij vrouwen, 1.22 bij mannen), samen met een hogere incidentie van hart- en vaatziekte, luchtwegziekte en enkele kankers. Het toevoegen van knijpkracht aan een gevestigd risicomodel gaf een kleine verbetering in voorspelling, wat te verwachten is van een algemene marker van fysiologische reserve.
Who this may not transfer to:Reported separately by sex, with closely matching hazard ratios in men and women; the cohort is healthier and more affluent than the UK average, which tends to shrink observed associations.
The study · 1
Celis-Morales et al., associations of grip strength with cardiovascular, respiratory, and cancer outcomes and all-cause mortality in UK Biobank · BMJ 2018;361:k1651
Zwakste derde deel van knijpkracht op middelbare leeftijd, ongeveer twee keer zoveel invaliditeit 25 jaar later
Mannen met de zwakste knijpkracht op middelbare leeftijd hadden ongeveer twee keer zoveel kans om 25 jaar later invalide of beperkt te zijn in dagelijkse taken, vergeleken met de sterkste mannen.
Het Honolulu Heart Program mat knijpkracht bij 3,218 gezonde mannen van 45 tot 68 jaar en beoordeelde de functie 25 jaar later opnieuw. Mannen in het laagste derde deel van de uitgangsknijpkracht hadden ongeveer een dubbel risico op functionele beperkingen en invaliditeit vergeleken met het hoogste derde deel, na correctie voor leeftijd, lengte en de aanwezigheid van chronische aandoeningen. Kracht gemeten op ogenschijnlijk gezonde middelbare leeftijd bleek een voortdurend signaal van hoe goed het lichaam stand zou houden.
Who this may not transfer to:Measured only in Japanese-American men. Grip norms differ by sex, so the absolute cut-points do not transfer to women, though the direction of the association (weaker midlife grip, more later disability) is echoed in mixed-sex cohorts.
The study · 1
Rantanen et al., midlife hand grip strength as a predictor of old age disability · JAMA 1999;281(6):558-560
Each 11 lb (5 kg) less grip, 16% higher all-cause death rate pooled across 3 million adults
Across 42 studies and three million people, every 11 lb (5 kg) less grip went with about a 16% higher death rate, the same size the single largest cohort found, and the link held in men and women alike and stayed after setting aside people who were already ill.
Wu and colleagues combined 42 prospective cohort studies covering 3,002,203 adults. Per 11 lb (5 kg) lower grip, all-cause mortality rose 16% (HR 1.16, 95% CI 1.12 to 1.20) and cardiovascular disease rose 21% (1.21, 1.14 to 1.29), with a roughly linear dose-response up to about 123 lb (56 kg), while cancer showed no association (1.01, 0.98 to 1.05). The associations did not differ by sex and remained after excluding participants with cardiovascular disease or cancer at baseline, which narrows the reverse-causation explanation without removing it, since undiagnosed illness can still lower grip.
Who this may not transfer to:Pooled from cohorts of both sexes; the meta-analysis found the association did not differ between men and women, though absolute grip values and thresholds differ by sex.
The study · 1
Wu et al., association of grip strength with risk of all-cause mortality, cardiovascular diseases, and cancer in community-dwelling populations: a meta-analysis of prospective cohort studies · J Am Med Dir Assoc 2017;18(6):551.e17-551.e35
Sterkere knijpkracht, lager dementierisico over 16 gepoolde cohorten
Over een nieuwe studie plus 16 eerdere studies heen hadden sterkere mensen minder kans om dementie te ontwikkelen of cognitieve functie te verliezen in de loop van de tijd.
Een GeroScience-rapport uit 2022 poolde 16 prospectieve cohorten, inclusief een nieuwe eigen KIHD-cohortanalyse, en vond dat knijpkracht omgekeerd samenhing met latere cognitieve stoornissen en dementie. Het verband is consistent van richting over de cohorten heen, maar de opzet is overal observationeel, dus het stelt een robuuste associatie vast, geen causaal of trainbaar effect op de hersenen.
Who this may not transfer to:The pooled cohorts include both sexes; the association holds in men and women, though absolute grip values and thresholds differ between them.
The study · 1
Kunutsor et al., grip strength and risk of cognitive outcomes: systematic review and meta-analysis · GeroScience 2022;44(4):2007-2024
Measurement And Diagnosis
De eerstelijnstest voor sarcopenie, onder 60 lb (27 kg) bij mannen en 35 lb (16 kg) bij vrouwen
De belangrijkste Europese definitie van leeftijdsgerelateerd spierverlies gebruikt knijpkracht als het eerste te controleren item: onder 60 lb (27 kg) voor mannen of 35 lb (16 kg) voor vrouwen wijst op waarschijnlijke sarcopenie.
De European Working Group on Sarcopenia in Older People herzag haar definitie uit 2010 na een beoordeling van het bewijs, en verplaatste spierkracht naar de voorkant van het diagnostische traject omdat kracht ongunstige uitkomsten beter voorspelt dan spiermassa. Knijpkracht, omdat die goedkoop en betrouwbaar is, is de aanbevolen maat voor kracht, met drempels van 60 lb (27 kg) (mannen) en 35 lb (16 kg) (vrouwen) die waarschijnlijke sarcopenie markeren in afwachting van bevestiging met een massameting.
Who this may not transfer to:Thresholds are set separately for men and women; they are calibrated to European reference data and may need adjustment in other populations.
The study · 1
Cruz-Jentoft et al., sarcopenia: revised European consensus on definition and diagnosis (EWGSOP2) · Age Ageing 2019;48(1):16-31
How it works
Knijpkracht piekt rond 112 lb (51 kg) voor mannen en 68 lb (31 kg) voor vrouwen, en neemt daarna af vanaf middelbare leeftijd
Knijpkracht is het sterkst in je vroege dertiger jaren (gemiddeld ongeveer 112 lb (51 kg) voor mannen, 68 lb (31 kg) voor vrouwen) en neemt af met de leeftijd, dus vergelijk je getal met anderen van jouw leeftijd en geslacht, niet met één enkel cijfer.
Dodds en collega's poolden twaalf Britse studies met 49,964 deelnemers, van kindertijd tot ouderdom, om levensloop-percentielcurves voor knijpkracht op te stellen. Knijpkracht stijgt gedurende de jeugd, piekt in de vroege dertiger jaren, houdt stand tot in de veertig en neemt af vanaf middelbare leeftijd, waarbij mannen consequent sterker zijn dan vrouwen. De curves maken het mogelijk één meting te plaatsen als een percentiel voor de leeftijd en het geslacht van een persoon, wat de enige manier is waarop een ruw kilogramcijfer betekenis krijgt.
Who this may not transfer to:Centiles are published separately for males and females across the life course; they are derived from British samples and may sit differently in other populations.
The study · 1
Dodds et al., grip strength across the life course: normative data from twelve British studies · PLoS One 2014;9(12):e113637
Repeatable to r above 0.8 when you average three fixed-posture squeezes
Een handdynamometer geeft een herhaalbaar getal als je elke keer dezelfde houding, hand en apparaat gebruikt, en het is meestal het beste om drie keer knijpen te middelen; je dominante hand meet ongeveer 10% hoger
Mathiowetz and colleagues established the reliability and validity of grip and pinch measurement, finding high test-retest reliability for grip when a standardized seated posture (elbow at 90 degrees, forearm neutral) and the mean of three trials are used. The work underpins the American Society of Hand Therapists protocol. Because the reading is sensitive to posture, instrument and effort, comparability over time depends on holding those constant.
Who this may not transfer to:The protocol and reliability apply to both sexes; only the absolute values differ, which is why readings are always placed against sex-specific norms.
The study · 1
Mathiowetz et al., reliability and validity of grip and pinch strength evaluations · J Hand Surg Am 1984;9(2):222-226
Muscle And Strength
Training raises grip in older adults, a small but real gain (SMD about 0.28)
Exercise, especially resistance training, does raise your grip number in older adults by a few kilograms, so the score responds to work even though the way to move it is training the whole body.
Labott and colleagues pooled exercise trials in older adults and found a positive overall effect on handgrip strength (standardized mean difference about 0.28), driven by task-specific and multimodal training. The gains are modest in absolute terms. Grip rises when overall muscular strength rises, so the lever is whole-body resistance training, not isolated hand-squeezing work.
Who this may not transfer to:The pooled trials include men and women; the relative response to training is similar, while starting values and absolute gains differ by sex.
Treat grip as a readout of total-body strength. Build it with the movements that build everything else, carries, deadlifts, rows and presses, and add a little dedicated grip work (heavy holds, thick-bar or towel work) only if a weak grip is limiting your other lifts. See resistance training for how to load and progress it.
The study · 1
Labott et al., effects of exercise training on handgrip strength in older adults: a meta-analytical review · Gerontology 2019;65(6):686-698
What It Is
Grip strength is how hard your hand can squeeze, measured in kilograms on a hand dynamometer. A hard squeeze needs muscle, nerves, nutrition, and general vitality in shape at once, so the number stands in for the whole body. Your dominant hand is usually about 10% stronger, so note which hand you use.
How to Measure It
Sit with your feet flat and shoulders relaxed, elbow bent to about 90 degrees, forearm and wrist neutral. Squeeze as hard as you can for a couple of seconds. Take three squeezes per hand with a short rest between, then record the best or the average of the three. Because strength varies with age and sex, judge your number against others of your age and sex.
How to Improve It
Because a strong squeeze comes from total-body strength, you raise it by building strength across the whole body. In pooled exercise trials in older adults, whole-body training is the approach with the strongest evidence. Five foundational lifts carry most of the load: squats, deadlifts, rows, presses and loaded carries. A loaded carry, walking a set distance while holding heavy dumbbells or a loaded handle, loads the grip hard while training the whole posterior chain. Dedicated grip work, such as heavy static holds, thick-bar or towel training and farmer-style holds, is a small add-on, useful mainly when a weak grip limits your other lifts.
Grip predicts these outcomes; training the grip alone does not prevent them. The 42-cohort link is with whole-body strength, not the hands.
Go Deeper
- Self-measures hub: grip alongside walking speed, the chair stand, blood pressure and the other home self-checks, each with the protocol its numbers came from.
- Resistance training: the lever for grip, and how to load and progress whole-body strength safely.
- Protein and muscle: the daily protein that lets strength training build muscle.
- Biological aging: why strength tracks the pace of aging, and the limits of reading any single marker.
- Balance and fall prevention: the other half of staying steady and independent, a separate capacity from strength.
What It Is Not
European clinicians use grip as the first-line strength check for sarcopenia. Below 60 lb (27 kg) in men and 35 lb (16 kg) in women, they call sarcopenia probable, a threshold to investigate, not a diagnosis.
Reading Grip Strength Well
Everything to be aware of is here, in one place. This practice suits most healthy people; a few situations call for real care.
No link to diabetes, fractures, fall injuries or chest infections
Grip works as a general alarm because it reads the condition of the whole body, which is also why it does not point to a specific cause. In PURE, grip predicted death and cardiovascular events but showed no significant link to incident diabetes, hospitalization for pneumonia or COPD, fall injury or fracture. A low reading is a reason to look at overall strength, activity and health, and to see a clinician about any sudden or one-sided weakness, not a diagnosis on its own.Leong et al., prognostic value of grip strength: findings from the PURE study
A low number is a signal, not a diagnosis
A hard squeeze depends on the whole body, so a low reading points to your overall strength, activity, and health. Use it to prompt action and, where warranted, a conversation with a clinician.
Local hand problems change the reading on their own
Hand or thumb osteoarthritis, a recent wrist or hand injury, carpal tunnel, tendon pain, or a rheumatoid flare can all lower grip on their own. None of these reflect whole-body strength. A one-sided drop, especially with pain, points to something local in that hand.
See a clinician for sudden weakness
A gradual change over months fits normal tracking. Sudden weakness in one hand or on one side, numbness, slurred speech, or a drooping face are stroke signs. Get urgent medical care.
Keep the test consistent, and stop if it hurts
The number is comparable over time only when the posture, hand and instrument stay the same, so a change in method can look like a change in strength. Squeeze hard, but stop short of joint pain, and if a maximal squeeze aggravates a sore wrist or thumb, ease off and track the trend with everyday tasks instead.
Start slow, be smart, read the research, and consult a professional if you have any concerns. This is here to inform your choice, not make it for you.
Common Questions
What is a good grip strength for my age?
Judge it against your age and sex, since men are stronger than women at every age. In large British data, grip peaks in the early thirties, about 112 lb (51 kg) for men and 68 lb (31 kg) for women. It holds through the forties, then declines from midlife.
Will a hand gripper or a tennis ball help?
A gripper or a squeezed tennis ball builds the grip muscles in your hands and forearms. The reserve that makes grip predict health comes from whole-body strength, and resistance training raises grip in older adults by a few kilograms while building that reserve.
What if I do not have a dynamometer?
A dynamometer gives you a number you can compare to research and track to the kilogram. The Jamar is the reference model, and a cheaper digital one still tracks your own trend even where it does not match a Jamar exactly. Without one, watch everyday tasks. A stiff jar that is suddenly hard to open, two grocery bags carried up the stairs, wringing out a towel, holding a heavy pan steady: watch for those. A clear, recent drop in any of them is worth acting on, especially when you also feel generally weaker.
Does grip strength predict dementia?
Stronger people are less likely to develop cognitive decline and dementia. Early, undiagnosed brain changes can lower activity and grip years before a diagnosis, so the evidence is observational and cannot prove cause. That signal pools 16 cohorts, including a new KIHD study, where a weaker grip tracked with aging in the brain and the body.
Explore Related
Other pages this one connects to, by the evidence they share, the outcomes they touch, and the ground they cover.
All 10 sources on this page independently checked and cross-referenced.
Thomas Dehli, Founder & Editor, Sacred Lotus
Sacred Lotus has published Chinese medicine reference material since 2001. Integrative pages are held to the same standard as the herb and formula library: cite the source, grade the claim at its real strength, and say where the research has not looked. This page is educational and it is not medical advice. Last reviewed and updated August 10, 2026.
Evidence strength
How confidently the research supports a claim. Strength describes the evidence, not our endorsement.