Relationship between internal and external load in under-16 soccer players: heart rate, rating of perceived exertion, and GPS-derived variables - Havanecz, K.; Sáfár, S.; Bartha, C.; Kopper, B.; Horváth, T.; Tóth, P. J.; Szabó, G. P.; Szalánczi, Z.; Géczi, G. (Sports, 2025)
Keywords: junior elite sport; soccer; load; tracking; GPS; heart rate; RPE; analysis; training; Switzerland; sport games; junior sports