Fig. 3

Correlation between adherence to resistance training and endurance training frequency FITT principles. Figure shows the correlation between adherence to resistance training and endurance training frequency (A), intensity (B), time (C), and type (D) (FITT principles) for participants randomised to high intensity training (n = 288). NB. Cubic splines were fitted with 5 cross-median knots to illustrate the relationship between adherence to prescribed frequency of resistance training and adherence to prescribed frequency of endurance training