Table 4.

Repeated ability sprint test (RAST) and recovery heart rate during WHBM and HV conditions.

	SB	HV	WHBM	p
Pre-sprint (bpm)	76 ± 8	72 ± 13	80 ± 17	0.083
Highest HR during sprint (bpm)	173 ± 8	172 ± 7	173 ± 8	0.122
Highest percentage of HR reserve during sprints (%)	81 ± 7	80 ± 7	80 ± 7	0.063
HR recovery after 1 min (bpm)	–49 ± 14	–48 ± 10	–48 ± 13	0.755
HR recovery after 2 min (bpm)	–62 ± 9	–62 ± 9	–61 ± 10	0.477

SB, spontaneous breathing; HV, hyperventilation; WHBM, Wim Hof breathing method.

Mean values ± standard deviations. HR recovery values indicate post exercise drops in HR from highest HR during sprint, in bpm.