Fig. 13

a Mean values and standard deviation of MDA, in diaphragm (white bars) and gastrocnemius (black bars) muscles as measured by optical densities. Statistical significance is represented as follows: (i) n.s.: non-significant and **p ≤ 0.01 between any of the intervention groups (U and E–U) and control mice. b Mean values and standard deviation of SOD1, in diaphragm (white bars) and gastrocnemius (black bars) muscles as measured by optical densities. Statistical significance is represented as follows: n.s.: non-significant and ***p ≤ 0.001 between any of the intervention groups (U and E–U) and control mice. c Mean values and standard deviation of SOD2, in diaphragm (white bars) and gastrocnemius (black bars) muscles as measured by optical densities. Statistical significance is represented as follows: n.s.: non-significant, **p ≤ 0.01 and ***p ≤ 0.001 between any of the intervention groups (U and E–U) and control mice. d Mean values and standard deviation of catalase, in diaphragm (white bars) and gastrocnemius (black bars) muscles as measured by optical densities. Statistical significance is represented as follows: n.s.: non-significant and ***p ≤ 0.001 between any of the intervention groups (U and E–U) and control mice. a.u. arbitrary units, E–U elastase–urethane, MDA malondialdehyde, OD optical densities, SOD1 superoxide dismutase isoform 1, SOD2 superoxide dismutase isoform 2, U urethane