Fig. 2

Recording of muscle activity (EMG) of fish during swimming during treatment and after treatment with CPR and their respective spectrograms indicating the power of data analyzed up to 40 Hz. Evaluated for the following groups: control (A); vehicle (B), treated with 150 mg L⁻¹ CPR (C); 200 mg L⁻¹ CPR (D). 250 mg L⁻¹ CPR (E) and 300 mg L⁻¹ CPR (F). Average power of muscle contraction in the last 50 s of the 5-min records of contact with CPR (F). EMG during recovery after immersion baths with CPR at 150 mg L⁻¹ (G); 200 mg L⁻¹ (H). 250 mg L⁻¹ (I); 300 mg L⁻¹ (J). Average values of muscle contraction power in the last 50 s of the 5 min records during recovery (K). (ANOVA followed by Tukey’s test; ***p < 0.001; n = 9).