Table 1. Inclusion and exclusion criteria

Inclusion Criteria	(1) At least 4 training sessions a week
	(2) More than 3,000 meters training distance per session, and
	(3) Participated more than 6 years competition
Exclusion Criteria	(1) Any history of shoulder fracture, dislocation or surgery
	(2) Recent injury of shoulder in the past 3 months