What massage guns do: better range of motion, little for soreness

A massage gun reliably does one thing: used on a muscle it produces short-term gains in flexibility and range of motion, and can help recovery-related outcomes such as stiffness [s1]. What it does not reliably do is the headline promise on the box — pooled trials find no clear improvement in maximal-strength recovery and no clear reduction in next-day muscle soreness after hard exercise [s2].

This article describes published research into a recovery device. It is not medical or training advice.

What the review of uses found

A 2023 systematic review in the Journal of Functional Morphology and Kinesiology screened 281 records and included 11 studies of massage guns in healthy and unhealthy people, used before activity, after it, or as part of treatment [s1]. The evidence base was shaky to begin with: ten of the eleven studies carried a moderate risk of bias and one a high risk [s1].

Within those limits, the pattern was consistent. Massage guns could improve the flexibility of muscles including the iliopsoas, hamstrings and calf, and were a cost-effective way to reduce stiffness and improve range of motion and strength after a fatiguing protocol [s1]. But for strength, balance, acceleration, agility and explosive activities, the devices produced either no improvement or, in some cases, a decrease in performance [s1]. And several markers people assume a massage addresses did not move: the review found no differences in muscle contraction time, rating of perceived exertion, or blood lactate [s1].

What the recovery numbers say

The sharper test is a 2026 systematic review and meta-analysis in Chiropractic & Manual Therapies, which pooled 12 randomised controlled trials of percussive therapy after exercise-induced muscle damage [s2]. It separated the outcomes that recovery devices are actually bought to fix, and they came apart.

Percussive therapy improved recovery of countermovement jump — a measure of explosive power — with a moderate effect (Hedges' g = 0.78, 95% CI 0.26 to 1.29), though the certainty of that evidence was rated low [s2]. It also reduced creatine kinase, a blood marker of muscle damage (g = −0.87, 95% CI −1.57 to −0.17), at very low certainty [s2]. But it did not clearly improve recovery of maximum voluntary contraction — maximal strength — (g = 0.12, 95% CI −0.10 to 0.34, moderate certainty), and it did not clearly reduce delayed-onset muscle soreness (g = 0.14, 95% CI −0.19 to 0.48, very low certainty) [s2]. In both of those, the confidence interval crosses zero, meaning no reliable effect was demonstrated.

The soreness result is the one that matters for most buyers, because "less sore tomorrow" is the core sales pitch — and it is the claim the pooled trials do not support [s2]. The authors also cautioned that their dose-response findings, such as which treatment lengths tracked with larger effects, are preliminary and should not be read as prescriptive thresholds [s2].

How to read it

Put the two reviews together and the honest summary is narrow. A massage gun is a decent, low-risk tool for loosening a tight muscle and adding a few degrees of short-term range of motion, and it may help explosive power bounce back and nudge down a damage marker after a hard session [s1][s2]. It is not shown to speed the recovery of maximal strength, and it is not shown to make you meaningfully less sore [s2]. One practical implication is about timing: because percussion can reduce explosive output, using it hard right before a jump or sprint session may work against you — the recovery evidence, such as it is, sits after training, not before it [s1].

This puts massage guns in the same company as the other popular recovery gadgets. The evidence for foam rolling traces almost the identical shape — real, small flexibility and soreness effects, little for performance — and cold-water immersion shows the same gap between marketing and measured benefit. For soreness itself, the broader look at what causes and eases it and the weak case that pre-exercise stretching prevents injury both land in the same place.

What to watch

The limiting factor is study quality: most of the underlying trials are small and at moderate risk of bias, and the meta-analysis rated the certainty of nearly every recovery finding low or very low [s1][s2]. Larger, better-controlled trials — and honest ones on soreness specifically — would settle whether the jump-recovery signal is real and whether any soreness effect exists at all. Until then, a massage gun is a reasonable mobility aid oversold as a recovery machine.

Sources

• The Effects of Massage Guns on Performance and Recovery: A Systematic Review — Journal of Functional Morphology and Kinesiology, 2023-09-18
• Effects of percussive therapy dosages on recovery from acute exercise-induced muscle damage: a systematic review and meta-analysis — Chiropractic & Manual Therapies, 2026-06-12