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Louise M. Burke and Peter Peeling

involvement of these variables is provided in Table  3 , as well as other specific reviews on dietary standardization prior to performance trials ( Jeacocke & Burke, 2010 ), external sources of motivation ( Halperin et al., 2015 ), and the organization of reliable and valid measurements of performance

Open access

Zhen Zeng, Christoph Centner, Albert Gollhofer and Daniel König

extent of BFR as well as assessing the AOP in BFR research. 17 – 21 However, there is a lack of evidence regarding the accuracy of PO in determining both lower- and upper-limb AOP for BFR protocols. Therefore, the main purpose of this study was to evaluate the validity between PO for measuring the AOP

Open access

D. Enette Larson-Meyer, Kathleen Woolf and Louise Burke

representative of usual intake • Reasonably valid depending on physical and psychological profiles of athlete c • High subject burden • Results depend on athlete’s cooperation, attention to detail, and ability/desire to record foods at the time of consumption • Act of recording may alter diet toward progression

Open access

Darren J. Burgess

Research describing load-monitoring techniques for team sport is plentiful. Much of this research is conducted retrospectively and typically involves recreational or semielite teams. Load-monitoring research conducted on professional team sports is largely observational. Challenges exist for the practitioner in implementing peer-reviewed research into the applied setting. These challenges include match scheduling, player adherence, manager/coach buy-in, sport traditions, and staff availability. External-load monitoring often attracts questions surrounding technology reliability and validity, while internal-load monitoring makes some assumptions about player adherence, as well as having some uncertainty around the impact these measures have on player performance This commentary outlines examples of load-monitoring research, discusses the issues associated with the application of this research in an elite team-sport setting, and suggests practical adjustments to the existing research where necessary.

Open access

Øyvind Sandbakk

responses have become both small and accurate enough to provide valid information from athletes’ training and competitions. Many of these digital tools are already used as part of sport practice for various purposes, such as evaluating individual or collective behavior during training or competitions

Open access

Shona L. Halson, Alan G. Hahn and Aaron J. Coutts

high reliability but low ecological validity, while field assessments may have lower reliability but strong ecological validity. With the advent of wearable technologies, markerless motion-analysis systems, and sophisticated competition-analysis tools, there has been a rapid expansion of the ability to

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Thomas Haugen

accountable for more than 100 publications through the Olympiatoppen system. Their strategy has been to establish valid and reliable protocols for testing and training monitoring; describe the physiological capacity, mechanical properties, and training content performed by world-leading athletes to understand

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International Olympic Committee Expert Group on Dietary Supplements in Athletes

, though valid and reliable methods are available for some specific nutrients. Only after an athlete has reached an appropriate level of maturity and competition-readiness, and has a good training, recovery and nutrition plan in place, should the potential of performance supplements to provide further

Open access

Sophia Nimphius

gender-comparison studies to increase the underlying validity and avoid generalizations. In the exercise and sport sciences, such design improvements would include providing descriptive measures of participants to ensure that we do not perpetuate an ambiguous and potentially harmful conclusion that is

Open access

Ronald J. Maughan, Susan M. Shirreffs and Alan Vernec

assessing efficacy of supplements. Even something as simple as exercise performance cannot be measured without some degree of uncertainty due to the inherent variability in performance. The validity, reliability, and sensitivity of the tests that are commonly employed as a measure of exercise performance