Abrams T. C. Terlizzi B. Meester An De Sacko R. S. Irwin J. M. Luz C. Rodrigues L. P. et al. (2022). Potential relevance of a motor skill “proficiency barrier” on health-related fitness in youth. European Journal of Sport Science 23(8) 1771-1778. http://dx.doi.org/10.1080/17461391.2022.2153300