Grip Strength

What it is

Maximum isometric grip force measured by a handheld dynamometer (Jamar or equivalent). Standard protocol: seated, elbow at 90°, three trials per hand, record the best.

Why it matters

In the PURE study (~140,000 adults across 17 countries), each 5 kg reduction in grip strength corresponded to a 16% increase in all-cause mortality and a 17% increase in cardiovascular death. The association held across regions, ages, and adjusting for traditional risk factors.

Reference ranges (rough)

Age	Men (kg)	Women (kg)
20–40	45–55	28–35
40–60	40–50	26–33
60–80	28–42	18–28
80+	20–30	12–20

Below ~26 kg (men) or ~16 kg (women) is a sarcopenia/frailty threshold in many criteria.

Why it’s a powerful integrator

Grip strength reflects nutrition, motor-unit health, nervous-system integrity, and overall muscular conditioning. It’s a low-cost proxy for “general resilience” that ages predictively.

What improves it

Resistance training, particularly grip-loading exercises (deadlifts, farmer’s carries, hangs). Improvements are possible even in very elderly adults.

Related entries

Sarcopenia, Frailty index, Exercise.