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Study in Journal of Strength and Conditioning Research Validates Matte Surface Benefits for Grip Fatigue Reduction
Peer-reviewed trial shows VitaForge’s matte finish reduces grip EMG fatigue by 37% vs. conventional glossy kettlebells during high-rep sets.
Mar 18th,2026
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A 12-week double-blind RCT published in JSR (June 2024) found participants using VitaForge’s colored matte kettlebells exhibited 37% lower median frequency decline in forearm flexor EMG signals during 5×20 swing protocols.
Surface metrology confirmed uniform Ra 1.8μm texture optimized for sweat dispersion and friction hysteresis control.
Findings reinforce the shift toward tactile-optimized equipment in functional training—accelerating adoption by rehab clinics and tactical fitness programs.
