to test their effects. They were tested on maximum sprinting ability and overall change in flexibility. Both static and dynamic stretching had a positive impact on flexibility but, whereas dynamic stretching had no impact on sprint times, static stretching had a negative result, worsening the time the participants were able to sprint the distance in. Stretching tools BOSU Flexcushion Foam roller Stretch Band References Iatridou, G., Dionyssiotis, Y., Papathanasiou, J., Kapetanakis, S., & Galitsanos, S. (October/December 2018). "Acute effects of stretching duration on sprint performance of adolescent football players". Muscles, Ligaments & Tendons Journal (MLTJ), 8 (4), 37–42. . Further reading Anderson, Bob (2010). Stretching: 30th Anniversary Edition. Shelter Publications. Shrier, Ian (2005). "When and Whom to Stretch?" The Physician and Sportsmedicine 33 (3): 22–26. . External links Stretching