Term of Award

Spring 2020

Degree Name

Master of Science, Kinesiology - Exercise Science Concentration

Document Type and Release Option

Thesis (open access)

Copyright Statement / License for Reuse

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Department

Department of Health Sciences and Kinesiology

Committee Chair

Greg Ryan

Committee Member 1

John Dobson

Committee Member 2

Samuel Wilson

Abstract

Context: Hyperthermia is induced during prolonged exercise which promotes fatigue and a decline in performance. Basketball athletes have trouble preventing an onset of hyperthermia; thus, cryotherapy is applied intermittently to combat the negative effects.

Objective: To determine, (1) effect intermittent cooling has on simulated basketball performance, perceived exertion and perceived recovery; and (2) change in performance while applying two different forms of intermittent cooling during the Basketball Specific Fatigue Protocol (BSFP).

Design: Crossover study design.

Setting: Indoor collegiate basketball court.

Patients or Other Participants: Sixteen competitively trained recreational basketball athletes (15 males, 1 female; age = 21.1 ± 1.2 yr).

Main Outcome Measures: Participants completed 3 trials of the BSFP. Between quarters, intermittent cooling was applied for 5-minutes to the lower extremity using either a phase changing material (PCM), wetted ice (WI) or received no treatment (control). Change in countermovement jump height (ΔCMJ), 10m sprint time (ΔST), heart rate (ΔHR), ratings of perceived exertion (RPE) and perceived recovery score (PRS) were recorded each quarter.

Results: PRS found to significantly increase starting quarter 2 (Q2), (7.0 ± 2.0, p = 0.02), with significantly higher PRS at Q2 using the PCM (7.5 ± 2.0, p < 0.01). HR and ST saw significant change between quarters (ΔHR: Q1 = 81.8 ± 2.6 bpm, p < 0.01; ΔST: Q1 to Q4 (- 0.2 ± 0.1 s, p = 0.02), Q2 to Q4 (- 0.1 ± 0.0 s, p = 0.03), but not between conditions (ΔHR: p = 0.51, ΔST: p = 0.33). RPE significantly increased each quarter until the completion of the simulated game (p

Conclusions: Intermittent cooling, applied to the lower extremity via PCM, can increase perceived recovery through the first half of simulated basketball game performance.

Research Data and Supplementary Material

No

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