Exploring Shank Circumference by Stretching after Training among Volleyball Players.

This preliminary study examined the effects of a stretching intervention after training and its duration (15 vs. 30 min) on participants' shank circumference (SC) reduction and subjective discomfort score. Ten male volleyball players underwent a routine 3 h training. A two-way analysis of variance revealed that the stretching intervention had significant effects on SC reduction ( < 0.01) and subjective discomfort scores ( < 0.001). Stretching after training could help eliminate shank strain, and a slighter discomfort in shanks when stretching was also seen (score, 20.1/100). An independent-samples test revealed a significantly higher SC reduction ( < 0.01) with 30 min of stretching (5.6 mm) than with 15 min of stretching (2.7 mm); both stretching durations reduced SC significantly more than the no-stretching condition did. The findings of this study can serve as a reference for volleyball players to alleviate shank strain after daily routine training.