Date of Award

Fall 12-1-2002

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Athletic Training

First Advisor

Mark Merrick

Second Advisor

Chistopher Ingersoll

Third Advisor

Mitchell Cordova

Abstract

Context: Cryokinetics is a common rehabilitative technique. To date, no data describing capsular temperature cycling during cryokinetics have been reported. Objective: To compare ankle capsular temperature before and at the end of each exercise bout during a typical cryokinetics session. Design: A 2 x 10 repeated measure factorial design was used. The independent variables were treatment and bout. The dependent variable for this study capsular temperature of the lateral talo-crural joint. Setting: Data were collected in the Sports Injury Research Laboratory at Indiana State University. Subjects: Nineteen volunteers participated in this study (age= 24.6 + .6 yr; mass= 74.1 + 4.7 kg; ht = 171.2 + 2.6 em). Prior to testing, subjects were given informed consent and were screened for any of the contraindications to the treatments. Intervention: Capsular temperatures were measured with an intratissue thermocouple implanted along the lateral ankle capsule. Main Outcome Measures: Temperatures were recorded before and after each cryokinetics exercise bout. Results: A priori planned comparisons using two, 2 x 5 factorials with repeated measures (end-ice and end-exercise) were used in this study. For end-ice data, a main effect for bout was observed with each bout colder than the previous bout. No interaction or treatment effects were observed. For end-exercise data, a treatment x bout interaction was observed with the exercise treatment warmer than the control treatment only at the final bout. A bout effect was also observed with early bouts warmer than later bouts. Conclusions: No difference was observed in post-cryotherapy rewarming between subjects who exercised and those who rested. This suggests that exercises performed during a typical cryokinetics session do not meaningfully add to the rewarming. We also concluded that the rewarming that occurs between cold-immersion bouts was not adequate to overcome to the heat loss that occurs during these cold treatments.

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