The effect of cryotherapy on 'AROM' is seldom investigated. However, significant deficits in ankle AROM due to the cold whirlpool immersion may hinder performance as a normal amount of 'AROM' is required to complete sport-specific activities. All of the impairments noted in power, speed, and agility in the present study could be partially attributed to a decrease in AROM. However, dorsiflexion was decreased at 7 and 12 minutes following treatment and returned to baseline shortly thereafter. While plantar flexion, inversion, and eversion where not significantly affected. Other research investigating cold water immersion and delayed onset muscle soreness (DOMS) found no significant differences in AROM (Comeau and Potteiger, 2000; Kuligowski et al., 1998). Another investigation found a decrease in AROM and attributed it to collagen stiffness following the cold application (Gulick, et al., 1996).