@article{01J8SAZVVEHR7MSCBN1C7QK0Y3,
  abstract     = {{Purpose: To gather information on practices and perceptions of high-performance experts regarding their athletes' muscle fibertype composition (MFTC) and its estimation. Methods: A questionnaire on the noninvasive versus invasive estimation of MFTC was completed by 446 experts including coaches and sport-science/sports-medicine staff. Moreover, the perceived importance of MFTC for training and performance optimization was assessed. Differences between sport types (individual and team sports) were analyzed using chi-square tests. Results: Forty percent of the experts implemented MFTC assessment in pursuit of performance optimization, while 50% did not know their athletes' MFTC but expressed a desire to implement it if they would be able to assess MFTC. Ten percent did not perceive value in MFTC assessment. Only 18% of experts believed that their athletes would undergo a muscle biopsy, leading to the adoption of alternative noninvasive techniques. Experts primarily relied on their experience to estimate MFTC (65%), with experts working in individual sports using their experience more frequently than those working in team sports (68% vs 51%; P = .009). Jump tests emerged as the second-most commonly employed method for estimating MFTC (56%). When only considering experts who are currently using MFTC, 87% use MFTC to individualize training volume and 84% to individualize training intensity. Conclusions: Experts value MFTC assessment primarily to individualize training but mainly rely on noninvasive methods to estimate MFTC. Some of these methods lack scientific validity, suggesting a continuing need for education and further research in this area.}},
  author       = {{Lievens, Eline and Van de Casteele, Freek and De Block, Fien and Van Vossel, Kim and Vandenbogaerde, Tom and Sandford, Gareth N. and Bellinger, Phillip and Minahan, Clare and Bourgois, Jan and Stellingwerff, Trent and Mujika, Iñigo and Derave, Wim}},
  issn         = {{1555-0265}},
  journal      = {{INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE}},
  keywords     = {{individual sport,team sport,muscle biopsy,noninvasive,SKELETAL-MUSCLE,DETERMINANTS,PERFORMANCE,TYPOLOGY,TIME}},
  language     = {{eng}},
  number       = {{11}},
  pages        = {{1197--1208}},
  title        = {{Estimating muscle fiber-type composition in elite athletes : a survey on current practices and perceived merit}},
  url          = {{http://doi.org/10.1123/ijspp.2024-0043}},
  volume       = {{19}},
  year         = {{2024}},
}

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