Publications by authors named "G S Duthie"

Article Synopsis
  • * Conducted with 30 athletes performing 40-meter sprints and additional tests using vehicles for reliability, the results show that the GNSS units have low bias and low error rates, indicating strong agreement with gold standard measurements.
  • * These GNSS units prove to be a reliable and efficient tool for coaches to assess the sprint performance of multiple athletes in real-time, facilitating better decision-making for training and performance improvement.
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Player movement is a fundamental component of evaluating performance in most team sports. Movement can be evaluated across multiple scales, referring to the function of anatomical structures through various planes of motion or an individual regulating their field position based on the movement of opposition players. Developments in commercially available tracking systems have afforded end users the ability to investigate the spatiotemporal features of movement in fine detail.

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Background: Nutrition guidance for athletes must consider a range of variables to effectively support individuals in meeting energy and nutrient needs. Resistance exercise is a widely adopted training method in athlete preparation and rehabilitation and therefore is one such variable that will influence nutrition guidance. Given its prominence, the capacity to meaningfully quantify resistance exercise energy expenditure will assist practitioners and researchers in providing nutrition guidance.

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Objectives: (1) Determine the validity of instantaneous speed and acceleration and (2) the variation in validity over time (multiple sessions) for global navigation satellite systems (GNSS) devices.

Design: Repeated measures.

Methods: 10-Hz GNSS devices from Statsports (n = 2, Apex Pro) and Catapult (n = 2, Vector S7) were examined, whilst a speed laser manufactured by MuscleLab (n = 1, LaserSpeed) was the criterion measure, sampling at 2.

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