Fig. 5. Tidal volume (ml breath^-1, mean ± S.D.), breath frequency (breaths min^-1) and minute volume (ml min^-1) during 20 min periods of pre-exercise, locomotion, pauses between locomotor bouts and recovery from exercise in three individual Terrapene carolina. Tidal volume during locomotion is not significantly different from tidal volume during pauses or during recovery (two-way ANOVA, P>0.05). Breath frequency values are not significantly different between behaviors (paired t-test, P>0.05). Minute volume during locomotion is significantly higher than during recovery (paired t-test, P=0.0037).