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Changes in tidal volume with breath number. (A) Absolute tidal volume (VT, litres), or (B) tidal volume expressed as percentage total lung capacity (%TLCest) decrease with breath number during the post-exercise recovery period in bottlenose dolphins. Grey line shows exponential relationship (Eqn 1A or Eqn 1B). %TLCest=VT·TLCest−1·100, where TLCest=0.135·Mb0.92 (Fahlman et al., 2011; Kooyman, 1973).
