DA . Race analysis and determination of stroke frequency – stroke length combinations during the 50-m freestyle event . J Sports Sci Med . 2023 ;22: 156 – 165 . doi: 10.52082/jssm.2023.156 8. Simbaña-Escobar D , Hellard P , Avalos M , Seifert L . Competition analysis in swimming: inter
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Longitudinal Analysis of Race-Management Strategies in a World-Class 200-m Freestyle Swimmer: A Case Study
Camille Loisel, Robin Pla, and Ludovic Seifert
Speed and Heart-Rate Profiles in Skating and Classical Cross-Country-Skiing Competitions
Conor M. Bolger, Jan Kocbach, Ann Magdalen Hegge, and Øyvind Sandbakk
Purpose:
To compare the speed and heart-rate profiles during international skating and classical competitions in male and female world-class cross-country skiers.
Methods:
Four male and 5 female skiers performed individual time trials of 15 km (men) and 10 km (women) in the skating and classical techniques on 2 consecutive days. Races were performed on the same 5-km course. The course was mapped with GPS and a barometer to provide a valid course and elevation profile. Time, speed, and heart rate were determined for uphill, flat, and downhill terrains throughout the entire competition by wearing a GPS and a heart-rate monitor.
Results:
Times in uphill, flat, and downhill terrain were ~55%, 15–20%, and 25–30%, respectively, of the total race time for both techniques and genders. The average speed differences between skating and classical skiing were 9% and 11% for men and women, respectively, and these values were 12% and 15% for uphill, 8% and 13% for flat (all P < .05), and 2% and 1% for downhill terrain. The average speeds for men were 9% and 11% faster than for women in skating and classical, respectively, with corresponding numbers of 11% and 14% for uphill, 6% and 11% for flat, and 4% and 5% for downhill terrain (all P < .05). Heart-rate profiles were relatively independent of technique and gender.
Conclusions:
The greatest performance differences between the skating and classical techniques and between the 2 genders were found on uphill terrain. Therefore, these speed differences could not be explained by variations in exercise intensity.
Performance Analysis of a World-Class Sprinter During Cycling Grand Tours
Paolo Menaspà, Chris R. Abbiss, and David T. Martin
This investigation describes the sprint performances of the highest internationally ranked professional male road sprint cyclist during the 2008–2011 Grand Tours. Sprint stages were classified as won, lost, or dropped from the front bunch before the sprint. Thirty-one stages were video-analyzed for average speed of the last km, sprint duration, position in the bunch, and number of teammates at 60, 30, and 15 s remaining. Race distance, total elevation gain (TEG), and average speed of 45 stages were determined. Head-to-head performances against the 2nd–5th most successful professional sprint cyclists were also reviewed. In the 52 Grand Tour sprint stages the subject started, he won 30 (58%), lost 15 (29%), was dropped in 6 (12%), and had 1 crash. Position in the bunch was closer to the front and the number of team members was significantly higher in won than in lost at 60, 30, and 15 s remaining (P < .05). The sprint duration was not different between won and lost (11.3 ± 1.7 and 10.4 ± 3.2 s). TEG was significantly higher in dropped (1089 ± 465 m) than in won and lost (574 ± 394 and 601 ± 423 m, P < .05). The ability to finish the race with the front bunch was lower (77%) than that of other successful sprinters (89%). However, the subject was highly successful, winning over 60% of contested stages, while his competitors won less than 15%. This investigation explores methodology that can be used to describe important aspects of road sprint cycling and supports the concept that tactical aspects of sprinting can relate to performance outcomes.
The Contribution From Cross-Country Skiing and Shooting Variables on Performance-Level and Sex Differences in Biathlon World Cup Individual Races
Harri Luchsinger, Jan Kocbach, Gertjan Ettema, and Øyvind Sandbakk
Biathlon is an Olympic winter sport that combines rifle shooting and cross-country skiing in various race formats. In the individual distance (15 km for women and 20 km for men), athletes compete over 5 laps of skiing with shooting between each 2 laps (ie, 4 shootings). The aim of the current study was to compare total race time differences, as well as the contribution from cross-country skiing and shooting variables to this difference, between biathletes of different performance levels and sexes in individual races in the Biathlon World Cup. Based on the publicly available race reports, the authors compared these factors between top-10 results (G1–10) and results within rank 21–30 (G21–30), as well as the corresponding sex differences. G21–30 among men/women were on average 4%/6% behind G1–10 in total race time, in which course time accounted for 42%/54% of the overall performance difference, followed by 53%/44% explained by penalty time caused by shooting performance (ie, the number of hits). The remaining 2–3% was explained by differences in shooting time and range time. Women G1–10 were on average 15% slower in skiing speed than men G1–10, which accounted for 92% of the overall performance difference between sexes. In total, among G1–10, men shot on average 15 s faster than women, and total penalty time was 18 s shorter. In conclusion, course time and penalty time contributed approximately equally to the performance-level differences, whereas course time explained above 90% of the sex differences in individual World Cup biathlon races.
Combining Research With “Servicing” to Enhance Sport Performance
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
Sequential Decision Making in Beach Volleyball—A Mixed-Method Approach
Sandra Ittlinger, Steffen Lang, Daniel Link, and Markus Raab
3A: Can Allocation Strategies and Hot Hand Behavior Be Manipulated in Elite Athletes, and How Sensitive Are Elite Players to BRD and Changes? Method Building on the competition analysis of the sequence structures, we directly tested the base-rate sensitivity of athletes in Study 3A. For the
Modeling Players’ Scanning Activity in Football
Marius Pokolm, Robert Rein, Daniel Müller, Stephan Nopp, Marie Kirchhain, Karl Marius Aksum, Geir Jordet, and Daniel Memmert
than twice. In total, 239 players were included in the analysis of the data set, which contained 8,021 game situations. Important competitive matches were selected to justify the competition analysis in game-playing performance. In the course of competition analysis, it is possible to assess the
Shared Market Competition and Broadcast Viewership in the National Football League
Michael Mondello, Brian M. Mills, and Scott Tainsky
of the firm in sporting competition and in market competition . The Quarterly Journal of Economics, 78 , 1 – 14 . doi:10.2307/1880543 10.2307/1880543 Organisation for Economic Co-operation and Development . ( 2013 ). The role and measurement of quality in competition analysis . OECD Policy
Next-Generation Models for Predicting Winning Times in Elite Swimming Events: Updated Predictions for the Paris 2024 Olympic Games
Iñigo Mujika, David B. Pyne, Paul Pao-Yen Wu, Kwok Ng, Emmet Crowley, and Cormac Powell
2024 Olympic Games. References 1. Barbosa TM , Barbosa AC , Escobar DS , et al . The role of the biomechanics analyst in swimming training and competition analysis . Sports Biomech . Published online August 17, 2021. doi:10.1080/14763141.2021.1960417 2. Yiannakis A , Selby MJP , Douvis
Relationship Between Flat-Water Tests and Canoe Slalom Performance on 4 Different Grades of Water Terrain Difficulty
Matej Vajda and Eva Piatrikova
competition analysis . Sports Biomech . 2008 ; 7 ( 1 ): 24 – 37 . PubMed ID: 18341134 doi:10.1080/14763140701683155 18341134 4. Zamparo P , Tomadini S , Didonè F , Grazzina F , Rejc E , Capelli C . Bioenergetics of a slalom kayak (k1) competition . Int J Sports Med . 2006 ; 27 ( 7 ): 546