External and internal load measures during preseason training in men collegiate soccer athletes - Fields, J.; Merigan, J.; Gallo, S.; White, J.; Jones, M. (The Journal of Strength and Conditioning Research, 2021)
Keywords: soccer; training; load; preparation period; heart rate; variability; hormone; feeling; interview; load volume; load intensity; load density; training control; well-being; heart rate variability; USA; sport games