REUTERS COVERAGE

With U.S. athletes to Paris 2024 — Reuters on CoolMitt®.

Reuters places CoolMitt® in the Olympic context: as a tool that U.S. athletes bring with them to Paris, while Craig Heller and Tyler Friedrich explain why heat, body temperature, and break management become decisive for performance.

Paris 2024 U.S. athletes Craig Heller Tyler Friedrich

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Reuters

To beat the heat, athletes bring cool tech to Paris 2024

External coverage

ATLANTA NEWS FIRST COVERAGE

Pro tennis at the Atlanta Open — cooling technology in action.

Atlanta News First reports on the use of CoolMitt® during the Atlanta Open. The new cooling technology is available to athletes to help them better manage heat, match load and short recovery windows.

Atlanta Open ATP Tour Tennis Heat Management

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Atlanta Open tennis context image for the report on cooling technology

Atlanta News First

Athletes keeping cool with new technology at Atlanta Open

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Stories

Real Performance Stories

Real insights from elite athletes — from training, competition and recovery.

Cycling

Tour de France Race Moment

Alberto Bettiol uses CoolMitt® at the Tour de France — an elite insight into cooling, recovery and performance under the highest race load.

Cycling

Recovery Between Efforts

A look at how masters sprinter and world record holder Andy Weathers uses CoolMitt® for recovery on the velodrome.

Mixed martial arts

Combat Training Moment

Liz Carmouche brings CoolMitt® into her training session — for high intensity and fast recovery.

Published in Sensors · 2025

CoolMitt® Palmar Cooling Study. Sprint performance under load.

A randomized, placebo-controlled study examined palmar cooling during repeated sprints. The results show: the cooling group maintained sprint performance more steadily, showed a lower heart rate after exertion and reported less muscle soreness 48 hours later.

Study design

RCT with sprint protocol

1 15 healthy graduate students

2 10 × 60 m sprints with changes of direction

3 3 × 2 minutes palmar cooling or placebo

4 Measurement of sprint time, heart rate, exertion and muscle soreness

What does RCT mean? RCT stands for “randomized controlled trial.” This means participants are randomly assigned to groups so the effect of an intervention can be compared as fairly as possible with a control or placebo group.

Performance Effect

Performance stayed more stable

Between sprint 1 and sprint 10, the cooling group slowed down less on average than the placebo group.

CoolMitt® Palmar Cooling +1.74 s

Placebo +2.76 s

The smaller the time loss across repeated sprints, the more stable performance remained under load.

Recovery Effect

Load & recovery

The study reports lower values for heart rate immediately after sprint 10 and for the muscle soreness index 48 hours after the sprint protocol.

Heart rate immediately after sprint 10

CoolMitt® Palmar Cooling 175.13 bpm

Placebo 188.80 bpm

Muscle soreness index after 48 hours

CoolMitt® Palmar Cooling 2.00

Placebo 3.83

Citation: Brown, M.; Daniels, J.; Crabtree, M.; Thompson, K.; Murphy, J.; Pannell, W.; McGlawn, R. The Effects of Palmar Cooling on Repeated Sprinting Ability: A Randomized Controlled Clinical Trial. Sensors 2025, 25(6), 1830.