A 2024 study found elite StarCraft II players had worse grip strength than a reference group across all attempts

"Esports Training in StarCraft II: Stance Stability and Grip Strength" (Białecki, Gajewski, et al., arXiv:2408.11764, 2024) reports that a group of elite Polish StarCraft II players had measurably lower grip strength than a reference group "in all consecutive attempts," and showed altered single-leg balance — despite the players self-reporting that they engaged in physical training. The result runs against the intuition that highly practised, fast-handed competitive gamers would have strong hands; instead their hand strength lagged the comparison group consistently, not just on average.

The paper shares two authors (Białecki, Gajewski) with the later tournament-tremor study (see claim-sc2-tournament-wrist-tremor-declined-over-the-day), marking a small, dedicated research program rather than a one-off. The throughline across both papers is a stance: esports athletes are treated as a distinct physiological population with measurable, sometimes counterintuitive neuromuscular signatures, worth clinical instrumentation of the kind normally reserved for conventional sport or occupational medicine.

That instrumentation of extreme repetitive hand use has a direct historical antecedent in the occupational-medicine literature (see claim-telegraphists-cramp-1890s-classified-as-occupational-neurosis).