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Holographic Sight Improves the Static Shooting Accuracy and Vertical Sway Precision During High-Intensity Dynamic Action in the Police Task Force

Michal Vágner, Zdeněk Bílek, Karel Sýkora, Vladimír Michalička, Lubomír Přívětivý, Miloš Fiala, Adam Maszczyk, and Petr Stastny

eliminate opponent counterstrike, where multiple shots are realistically applicable only with high shooting accuracy and precision ( Brown & Mitchell, 2017 ). In this psychologically demanding situation, it is not easy to maintain appropriate shooting performance ( Chung, Delacruz, de Vries, Bewley, & Baker

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Are Action Sport Cameras Accurate Enough for 3D Motion Analysis? A Comparison With a Commercial Motion Capture System

Gustavo Ramos Dalla Bernardina, Tony Monnet, Heber Teixeira Pinto, Ricardo Machado Leite de Barros, Pietro Cerveri, and Amanda Piaia Silvatti

acquisitions based on the same calibration procedure. As such, in this study we compared a GoPro camera system (ASC) with a Vicon camera system (MOCAP) in terms of 3D precision, accuracy, and kinematics of gait and jump in a controlled laboratory setup. Methods As camera systems we used 4 GoPro Hero3+ Black

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Does a Novice Technician Produce Results Similar to That of an Experienced DXA Technician When Assessing Body Composition and Bone Mineral Density?

Carl Persson, Flinn Shiel, Mike Climstein, and James Furness

Design To assess the novice and experienced technicians’ reliability, precision, and sensitivity to change, individuals were assigned to a group (experienced or novice). Individuals’ total body BC and BMD were scanned twice on the same day, minutes apart with repositioning between each scan. Scanning

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Assessing Time-Varying Lumbar Flexion–Extension Kinematics Using Automated Pose Estimation

Paul N. Goncharow and Shawn M. Beaudette

landmarks, it is necessary to understand the accuracy and precision of transfer learning algorithms, such as DLC, relative to accepted laboratory standards, under ideal scenarios, to realize the value of such an approach. The purpose of the current study was to compare concurrent flexion–extension angles of

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Comparing Global Positioning System and Global Navigation Satellite System Measures of Team-Sport Movements

Benjamin M. Jackson, Ted Polglaze, Brian Dawson, Trish King, and Peter Peeling

. Subsequently, the percentage of total distance covered in each velocity band was calculated for each period. For acceleration and deceleration, the number of efforts (>1.46 and <−1.46 m·s −2 ) was recorded. As well as these movement variables, the value for horizontal dilution of precision (HDoP) was extracted

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Short-Term Precision Error of Body Composition Assessment Methods in Resistance-Trained Male Athletes

Ava Farley, Gary J. Slater, and Karen Hind

, 2009 ; Olds, 2001 ), yet these athletes tend to see only small adaptations or improvements in physique over time ( Binkley et al., 2015 ; Harley et al., 2011 ; Lees et al., 2017 ; Smart et al., 2013 ). Given this evidence, assessment methods with high precision are required to measure body

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Reliability of Accuracy and Precision Tests for Elite Para Table Tennis Players

Szymon Galas, Marcin Andrzejewski, and Beata Pluta

practitioners recognize comprehensive and adequate technique and tactics as prerequisites for success ( Pluta et al., 2021 ; Saleh & El-Gawad, 2017 ). However, it is worth drawing attention to the extrmely limited literature available regarding the analysis of variables such as accuracy and precision of

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Protocol Standardization May Improve Precision Error of InBody 720 Body Composition Analysis

Tia Herberts, Gary J. Slater, Ava Farley, Luke Hogarth, Jose L. Areta, Gøran Paulsen, and Ina Garthe

, allowing them to assess the efficacy of nutrition and training interventions ( Meyer et al., 2013 ; Slater et al., 2017 ). However, athletes typically experience relatively small changes in body composition over time, and therefore, techniques used to assess body composition must have high precision

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A Digital Twin Framework for Precision Neuromusculoskeletal Health Care: Extension Upon Industrial Standards

David J. Saxby, Claudio Pizzolato, and Laura E. Diamond

operate specific machinery, etc) as many industrial applications do not require faithful representation of human form, function, and state beyond availability and suitability for industrial tasks. In contrast, precision neuromusculoskeletal health care requires a digital twin highly personalized to the

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Precision of the Estimation of Human Limb Inertial Parameters

John H. Challis

Repeat measurements were made by 2 operators on a group of 50 physically active subjects (age, 20.7 years ± 1.8; males: height 1.780 m ± 0.043. mass, 78.09 kg ± 9.30; females: height. 1.680 m ± 0.064. mass. 66.67 kg ± 6.67) to determine the precision with which the subjects' limb segment inertial parameters could be estimated. Segmental inertial parameters were determined using 3 techniques. 2 of which involved modeling segments as geometric solids, and a 3rd which used the equations of Zatsiorsky et al. (1990). Precisions were high for all 3 techniques, with little difference between inter- and intra-operator precisions. The lowest precisions were obtained for the hands and feet. For these segments the use of repeat measures to improve precision is recommended. These results imply that with similarly trained measurers, comparison of inertial parameters determined using the same protocol but obtained by different operators is appropriate, and that it is viable to have 2 measurers taking measurements on the same subject to accelerate data collection.