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Article

Muscular Strength, Power, and Endurance Adaptations after Two Different University Fitness Classes

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Center for Fire, Rescue and EMS Health Research, NDRI-USA, Inc., 1920 W 143rd Street, Suite 120, Leawood, KS 66224, USA
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Department of Kinesiology, Kansas State University, Natatorium 8, 920 Denison Ave, Manhattan, KS 66506, USA
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Authors to whom correspondence should be addressed.
Academic Editor: Anthony Leicht
Sports 2021, 9(8), 107; https://doi.org/10.3390/sports9080107
Received: 29 May 2021 / Revised: 29 June 2021 / Accepted: 27 July 2021 / Published: 28 July 2021
Physical activity (PA) classes help college students add weekly PA, which can help improve health and maintain body weight. Traditional weight training (TWT) can improve strength and aerobic capacity. High-intensity functional training such as CrossFit® (CF) provides time-efficient workouts with both muscle strengthening and aerobic exercises. Limited research has compared these classes for college students. We examined changes in muscular strength, power, and endurance as well as body composition. Participants were 85 healthy college students enrolled in TWT (n = 36, age 22.6 ± 4.1 years, 72.2% male) or CF (n = 49, age 21.8 ± 3.2 years, 55.1% male) classes meeting twice/wk for 8 weeks between October 2017 and May 2018. Baseline and posttest measurements included a vertical jump, grip strength, a 2 min push-up test, a 1 min squat test, height, weight, and a bioelectrical impedance analysis. Although no significant group × time interactions were found, there was a significant main effect of time for push-ups and squats (both p < 0.001). Participants enjoyed the classes and most planned to continue. Both classes improved muscular endurance although no significant differences were found between them. Activity classes provide college students with an option for increasing their weekly PA and help maintain body composition. Future research should examine the benefits from longer or more frequent classes. View Full-Text
Keywords: weight training; resistance training; physical education; CrossFit; high-intensity functional training; college students; physical activity; body weight weight training; resistance training; physical education; CrossFit; high-intensity functional training; college students; physical activity; body weight
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MDPI and ACS Style

Hollerbach, B.S.; Cosgrove, S.J.; DeBlauw, J.A.; Jitnarin, N.; Poston, W.S.C.; Heinrich, K.M. Muscular Strength, Power, and Endurance Adaptations after Two Different University Fitness Classes. Sports 2021, 9, 107. https://doi.org/10.3390/sports9080107

AMA Style

Hollerbach BS, Cosgrove SJ, DeBlauw JA, Jitnarin N, Poston WSC, Heinrich KM. Muscular Strength, Power, and Endurance Adaptations after Two Different University Fitness Classes. Sports. 2021; 9(8):107. https://doi.org/10.3390/sports9080107

Chicago/Turabian Style

Hollerbach, Brittany S., Sarah J. Cosgrove, Justin A. DeBlauw, Nattinee Jitnarin, Walker S.C. Poston, and Katie M. Heinrich 2021. "Muscular Strength, Power, and Endurance Adaptations after Two Different University Fitness Classes" Sports 9, no. 8: 107. https://doi.org/10.3390/sports9080107

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