Fig. 3. Mean force and velocity during jumping Fig. 3. Mean force and velocity during jumping.Mean vertical forces (N, solid lines ± SE) and horizontal (dashes), and vertical (dots and dashes) velocities (m s−1 ± SE) during summer (black, n = 5, Mb = 551.5±9.4 g) and winter (grey, n = 4, Mb = 806.6±26.3 g). Mean force and velocity during jumping.Mean vertical forces (N, solid lines ± SE) and horizontal (dashes), and vertical (dots and dashes) velocities (m s−1 ± SE) during summer (black, n = 5, Mb = 551.5±9.4 g) and winter (grey, n = 4, Mb = 806.6±26.3 g). John J. Lees et al. Biology Open 2014;bio.20147930 © 2014. Published by The Company of Biologists Ltd