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This review aims to examine the relationship between five different Yo-Yo tests and as well as performance in various fitness tests, to provide practical guidance for fitness assessment. Thirty-three studies (n = 1362) were analyzed to qualitatively score correlation magnitude (r-values) between five different Yo-Yo tests with . The association between Yo-Yo tests and physical fitness tests were examined including 36 studies (n = 1262 participants). Large correlations were found between and Yo-Yo Intermittent Endurance level 1 (r = 0.67), and level 2 (r = 0.67), Yo-Yo Intermittent Recovery level 1 (r = 0.65), and level 2 (r = 0.55). Yo-Yo tests showed moderate correlations with the jump tests (r = 0.40). Large associations were reported between Yo-Yo tests performance and treadmill endurance test (r = 0.59) and the field-based endurance tests (r = 0.66), respectively. These findings confirm Yo-Yo tests as reliable and valid tests for estimating and endurance performance in team sports, supporting their integration in structured testing batteries. Coaches should supplement Yo-Yo tests with specific strength and sprint assessments for a comprehensive fitness evaluation of the team sport athletes.
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http://dx.doi.org/10.1111/sms.70054 | DOI Listing |
Int J Sport Nutr Exerc Metab
September 2025
Exercise and Performance Nutrition Laboratory, School of Health Sciences, Lindenwood University, St. Charles, MO, USA.
Caffeine (CAF) mouth rinsing has been considered a practical nutritional strategy among athletes. Recent studies indicate that this nutritional strategy's efficacy may depend on the athlete's prandial state. Therefore, the main aim of the current study is to determine the effect of CAF mouth rinsing on a battery of soccer-specific tests of soccer players in fasted (FST) or fed states (FED).
View Article and Find Full Text PDFSports Med
September 2025
FIFA, Women's Development Programme, Women's Football Division, Zurich, Switzerland.
Background: There is a lack of data and its systematic organisation relating to the physical performance qualities of women's football players across the performance scale (i.e. level of competition categorised into unique tiers).
View Article and Find Full Text PDFSports (Basel)
July 2025
Higher School of Education, Polytechnic Institute of Beja, 7800-000 Beja, Portugal.
Sports performance indicators are mainly based on male athletes, highlighting the importance of portraying the female reality, particularly in rural contexts. This study aims to characterize sports performance indicators (body composition and physical fitness) of young Portuguese female athletes. A cross-sectional study was conducted with 124 girls (13.
View Article and Find Full Text PDFEur J Sport Sci
September 2025
Center of Sport and Health Sciences, School of Education, University of Iceland, Reykjavík, Iceland.
Biological maturation significantly influences physical development and performance, with notable differences between sexes. Research using objective measures, such as bone age (BA) assessed with X-ray to evaluate maturity and dual-energy X-ray absorptiometry (DXA) to assess body composition, remains scarce, particularly in females. This study investigated the associations between BA, body composition and physical performance in 12-year-old female soccer players.
View Article and Find Full Text PDFAdv Sci (Weinh)
August 2025
Institut Numecan, INRAE, INSERM, Univ Rennes, Rennes, France.
Background & Aims: Alternating periods of excessive and restrained eating results in weight cycling ('yo-yo' effect), a suspected risk factor for eating behavior dysregulation such as binge eating. The hypothesis that recurrent diet alternation alters hedonic feeding regulation by changing either or both intestinal microbiota and brain neuronal and glial regulation in mouse is tested.
Methods: C57BL/6 mice undergo 3 cycles of 1 week of western diet (WD) separated by 2 weeks of chow diet (CYCL group) or remain under chow diet (CTRL group).