-based inferences approach ( Mengersen et al., 2016 ). This suggests that a number of options may be suitable when exploring the potential influence of supplement interventions on performance outcomes. Analysis of the reliability of performances of top athletes across a large number of sports ( Malcata & Hopkins
Search Results
Methodologies for Investigating Performance Changes With Supplement Use
Louise M. Burke and Peter Peeling
Reliability of Postural Sway Measures of Standing Balance Tasks
Saud F. Alsubaie, Susan L. Whitney, Joseph M. Furman, Gregory F. Marchetti, Kathleen H. Sienko, and Patrick J. Sparto
, moving the head in yaw or pitch directions) may be undertaken before determining the exercise prescription. To properly assess subjects’ performance during balance and vestibular exercises so that decisions can be made about progression of those exercises, the reliability of performance should be established
Intrasession and Intersession Reliability of Running Mechanics During Treadmill Sprints
Olivier Girard, Franck Brocherie, Jean-Benoit Morin, and Grégoire P. Millet
Purpose:
To determine the intrasession and intersession (ie, within- and between-days) reliability in treadmill sprinting-performance outcomes and associated running mechanics.
Methods:
After familiarization, 13 male recreational sportsmen (team- and racket-sport background) performed three 5-s sprints on an instrumented treadmill with 2 min recovery on 3 different days, 5–7 d apart. Intrasession (comparison of the 3 sprints of the first session) and intersession (comparison of the average of the 3 sprints across days) reliability of performance, kinetics, kinematics, and spring-mass variables were assessed by intraclass correlation coefficient (ICC) and coefficients of variation (CV%).
Results:
Intrasession reliability was high (ICC > .94 and CV < 8%). Intersession reliability was good for performance indices (.83 < ICC < .89 and CV < 10%, yet with larger variability for mean velocity than for distance covered or propulsive power) and kinetic parameters (ICC > .94 and CV < 5%, yet with larger variability for mean horizontal forces than for mean vertical forces) and ranged from good to high for all kinematic (.88 < ICC < .95 and CV ≤ 3.5%) and spring-mass variables (.86 < ICC < .99 and CV ≤ 6.5%). Compared with intrasession, minimal detectable differences were on average twice larger for intersession designs, except for sprint kinetics.
Conclusion:
Instrumented treadmill sprint offers a reliable method of assessing running mechanics during single sprints either within the same session or between days.
Effect of Sampling Frequency on Isometric Midthigh-Pull Kinetics
Thomas Dos’Santos, Paul A. Jones, Jonathan Kelly, John J. McMahon, Paul Comfort, and Christopher Thomas
Hori et al 26 investigated the reliability of performance measurements from ground-reaction-force data during the CMJ and the influence of sampling frequency (500, 400, 250, 300, 100, 50, and 25 Hz). Peak power, PF, and peak velocity demonstrated high reliability across sampling frequencies (ICC = .92
A Maximal Rowing-Ergometer Protocol to Predict Maximal Oxygen Uptake in Female Rowers
Oscar B. Mazza, Søren Gam, Mikkel E.I. Kolind, Christian Kiær, Christina Donstrup, and Kurt Jensen
Publishing ; 2007 : 96 – 102 . 7. Schabort EJ , Hawley JA , Hopkins WG , Blum H . High reliability of performance of well-trained rowers on a rowing ergometer . J Sports Sci . 1999 ; 17 ( 8 ): 627 – 632 . PubMed ID: 10487463 doi:10.1080/026404199365650 10487463 8. Smith TB , Hopkins WG
Repeated-Sprint Training in Hypoxia in International Rugby Union Players
Adam Beard, John Ashby, Ryan Chambers, Franck Brocherie, and Grégoire P. Millet
, Snow RJ . Reliability of performance in repeated sprint cycling tests . J Sci Med Sport . 2002 ; 5 ( 4 ): 354 – 361 . PubMed ID: 12585619 doi:10.1016/S1440-2440(02)80024-X 12585619 10.1016/S1440-2440(02)80024-X 18. Hopker J , Myers S , Jobson SA , Bruce W , Passfield L . Validity
Evaluating the Profile of Psychological Strategies: An Applied Profile for Assessing the Perceived Effectiveness of Athletes’ Psychological Strategies in Sport
Umut Doğan
study that assessed the reliability of performance profiles with the highest number of participants. The sample sizes in Doyle and Parfitt ( 2008 ) and Gleeson et al. were used as reference points because performance profiles were the closest assessment tools to the ProPS in terms of their applied and
Higher- Versus Lower-Intensity Strength-Training Taper: Effects on Neuromuscular Performance
Hayden J. Pritchard, Matthew J. Barnes, Robin J. Stewart, Justin W. Keogh, and Michael R. McGuigan
the body composition and anaerobic performance of professional rugby union players . J Sports Sci . 2010 ; 28 ( 6 ): 679 – 686 . PubMed ID: 20397095 doi:10.1080/02640411003645695 10.1080/02640411003645695 20397095 25. McGuigan MR , Kane MK . Reliability of performance of elite Olympic
A Maximal Rowing Ergometer Protocol to Predict Maximal Oxygen Uptake
Kurt Jensen, Morten Frydkjær, Niels M.B. Jensen, Lucas M. Bannerholt, and Søren Gam
10.2165/00007256-200535070-00005 24. Schabort EJ , Hawley JA , Hopkins WG , Blum H . High reliability of performance of well-trained rowers on a rowing ergometer . J Sports Sci . 1999 ; 17 ( 8 ): 627 – 632 . PubMed ID: 10487463 doi:10.1080/026404199365650 10
Vision Is Not Required to Elicit Balance Improvements From Beam Walking Practice
Natalie Richer, Steven M. Peterson, and Daniel P. Ferris
prosthesis users: Cutoff scores and associated validity indices . American Academy of Physical Medicine and Rehabilitation, 12 , 16 – 25 . 10.1002/pmrj.12160 Sawers , A. , Kim , J. , Balkman , G. , & Hafner , B.J. ( 2020 ). Interrater and test–retest reliability of performance-based clinical
