Fig. 4From: Heavy Resistance Training Versus Plyometric Training for Improving Running Economy and Running Time Trial Performance: A Systematic Review and Meta-analysisFunnel plots of the studies that examined the effects on running time trial performance. [Legend] The plot of heavy resistance training (HRT) is shown as solid line; that for plyometric training (PLY) is represented as dash line. Egger’s tests were performed for HRT, PLY, and all plots (ALL)Back to article page