Fig 4. Percentage of time spent in specific heart rate intensity zones during the combat simulation.

Significant differences confirmed in Friedman test, with Dunn post-hoc (p<0.05). ^a Denotes significant different from the 95–100% zone. ^b Denotes significant different from the 90–94% zone. ^d Denotes significant different from the 80–84% zone. ^e Denotes significant different from the <80% zone.