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Open AccessFeature PaperArticle

Effects of Focal Knee Joint Cooling on Static and Dynamic Strength of the Quadriceps: Innovative Approach to Muscle Conditioning

1
Department of Kinesiology and Sport Sciences, University of Miami, Coral Gables, FL 33146, USA
2
Department of Health and Human Performance, Texas State University, San Marcos, TX 78666, USA
3
Department of Sport Science, College of Sport Science, Sungkyunkwan University, Suwon-si 16419, Gyeonggi-do, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Paul Tchounwou
Int. J. Environ. Res. Public Health 2021, 18(9), 4890; https://doi.org/10.3390/ijerph18094890
Received: 3 April 2021 / Revised: 30 April 2021 / Accepted: 2 May 2021 / Published: 4 May 2021
(This article belongs to the Special Issue Advances in Kinesiology and Health)
Recent evidence suggests an innovative approach to muscle conditioning: focal knee joint cooling (FKJC) appears to improve quadriceps function, including static (isometric) strength. However, there is limited evidence on the effects of FKJC on dynamic (concentric and eccentric) strength. Thus, the purpose of the study was to examine dynamic quadriceps strength following FKJC as well as static strength. Twenty-one college-aged participants volunteered. They randomly underwent 20 min of FKJC and control condition at least 72 h apart. FKJC involves two ice bags, placed on the anterior and posterior surfaces of the knee, whereas the control condition received a plastic ice bag filled with candy corn. We assessed isometric and isokinetic (concentric and eccentric) quadriceps strength at two different velocities (60°/s and 180°/s). Participants performed three maximal voluntary contractions for each mode of muscle contraction, before and after each treatment (immediately, 20, and 40 min after). The outcome variable was maximum knee extension peak torque. FKJC did not change peak torque during any mode of muscle contraction (p > 0.05). The current findings suggest that 20 min of FKJC does not change static (isometric) or dynamic (isokinetic) strength of the quadriceps. FKJC was neither beneficial nor harmful to static or dynamic muscular strength. View Full-Text
Keywords: isokinetic contraction; cryotherapy; quadriceps strength isokinetic contraction; cryotherapy; quadriceps strength
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MDPI and ACS Style

Kim, J.-S.; Mettler, J.A.; McCurdy, K.; Kim, K.-M. Effects of Focal Knee Joint Cooling on Static and Dynamic Strength of the Quadriceps: Innovative Approach to Muscle Conditioning. Int. J. Environ. Res. Public Health 2021, 18, 4890. https://doi.org/10.3390/ijerph18094890

AMA Style

Kim J-S, Mettler JA, McCurdy K, Kim K-M. Effects of Focal Knee Joint Cooling on Static and Dynamic Strength of the Quadriceps: Innovative Approach to Muscle Conditioning. International Journal of Environmental Research and Public Health. 2021; 18(9):4890. https://doi.org/10.3390/ijerph18094890

Chicago/Turabian Style

Kim, Joo-Sung; Mettler, Joni A.; McCurdy, Kevin; Kim, Kyung-Min. 2021. "Effects of Focal Knee Joint Cooling on Static and Dynamic Strength of the Quadriceps: Innovative Approach to Muscle Conditioning" Int. J. Environ. Res. Public Health 18, no. 9: 4890. https://doi.org/10.3390/ijerph18094890

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