López, J. L.; Olsson, H. J.; Bonet, J.; Padullés, J. M.; Padullés, X.; Pérez-Chirinos, C.; Martínez, D.; Solà, J.; Edo, S. Analysis of the Effectiveness of the Use of Instep Weights (Powerinstep) in Everyday Runners. J. Hum. Sport Exerc. 2018, 13, 340-353.