Search Results - Unknown
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Delayed effects of heavy resistance or ballistic priming on sprint and agility in elite U19 football
Jørgensen, R. B., Pedersen, L. T., Nielsen, T., Egebæk, H. K., Jensen, R.Published in The Journal of Sports Medicine and Physical Fitness (2025)“…Sprint and change of directional performance can be improved by previously conducting a priming protocol. However, it is unknown if this priming-induced performance enhancement is long-lasting. …”
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Influence of resistance training variables and the nordic hamstring exercise on biceps femoris architectural adaptations in soccer players: a systematic review
Pecci, J., Sañudo, B., Ramirez-Campillo, R., Saez de Villarreal, E.Published in Sports Health: A Multidisciplinary Approach (2025)“…Conclusion: NHE lengthens the fascicle, especially if a sufficient volume (ie, >290 repetitions) and 2 days per week are performed. It is still unknown how the programming of some fundamental variables such as intensity, degree of effort, or exercise selection affects the muscle architecture of the biceps femoris long head.…”
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Female basketball players` jump and sprint performance after plyometric jump training compared to resistance training
Tian, Y., Xu, K., Fang, W., Ramirez-Campillo, R.Published in Sports (2025)“…Background: Plyometric training (PT) and resistance training (RT) can improve jumping and sprinting performance, although their comparative effectiveness in elite female basketball players remain unknown. Objectives: To compare the effects of PT and RT on jumping and sprinting performance in elite female basketball players. …”
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Norwegian male U14 soccer players have superior running capacity compared to Icelandic players
Benediktsson, S., Johannsson, E., Rygh, C. B., Gundersen, H.Published in Frontiers in Sports and Active Living (2024)“…Whether this affect physical capacity is unknown. Thus, the first aim of the present study is to compare physical capacity between players from Iceland and Norway. …”
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The physical, technical and tactical demands of on-field training drills in professional Rugby league: a systematic scoping review
Walker, J. M., Slattery, K. M., Coutts, A. J.Published in Science and Medicine in Football (2024)“… - While research has identified the importance of tactics to successful rugby league performance, there has been no investigations on the tactical demands within rugby league training. Accordingly, it is unknown how coaches meet their tactical objectives within training drills and training design to prepare for competition…”
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Position-specific workload of professional rugby union players during tactical periodization training
Hu, X., Boisbluche, S., Philippe, K., Maurelli, O., Ren, X., Li, S., Xu, B., Prioux, J.Published in PLOS ONE (2024)“…The positional workload characteristics in rugby union on three acquisition days (i.e. strength, endurance, and speed days) of tactical periodization are still relatively unknown. Therefore, the primary aim of this study was to shed light on the positional external workload variables (10 Hz Global Positioning System and accelerometer microtechnology) and internal workload indicators (the session rating of perceived exertion) of players in a professional rugby union team by utilizing and comparing two tactical periodization models. …”
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Effects of single and repeated bouts of flywheel exercise on jump performance and muscle damage in athletes and non athletes
Shimizu, T., Tsuchiya, Y., Ueda, H., Izumi, S., Ochi, E.Published in BMC Sports Science, Medicine and Rehabilitation (2024)“…Background Although recent studies have investigated the effects of flywheel (FW) training on muscle function, the effects of transient FW exercise on jump performance in athletes are unknown. This study examined the effects of single and repeated bouts of FW squat exercises on jump performance and muscle damage in male collegiate basketball players. …”
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Expertise and purposeful activation of neck muscles modulate impact biomechanics in simulated soccer heading - a pilot study
Kern, J., Gulde, P., Hermsdörfer, J.Published in dvs-Biomechanik 2023 Tagungsband (2023)“…., 2014), the relationship between soccer experience, anticipatory activation of neck muscles, and head impact magnitude remains unknown. Therefore, the aim of this pilot study was to examine the effects of soccer expertise and neck stiffness on head impact biomechanics during header-related impacts.…”
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Assessing full body impulsive ability using a range of medicine ball loads for the backward overhead medicine ball throw
Beckham, G, K., Martin, E., Layne, D, K., Luke, R., Mayhew, J. L.Published in Sports Biomechanics (2023)“…The backwards overhead medicine ball (BOMB) throw is commonly-used to tests this ability, but the effect of varied loading on test execution is unknown. The purpose of this study was to determine the effect of different medicine ball (MB) loads on force, velocity, and power output during the BOMB throw. …”
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Sex differences in injury rates in team-sport athletes: A systematic review and meta-regression analysis
Zech, A., Hollander, K., Junge, A., Steib, S., Groll, A., Heiner, J., Nowak, F., Pfeiffer, D., Rahlf, A. L.Published in Journal of Sport and Health Science (2022)“…Although female sex is considered a risk factor, it is still unknown whether female and male team-sport players, in fact, differ in their injury rates. …”
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Comparison of player perceptions to mechanical measurements of third generation synthetic turf football surfaces
Cole, D., Fleming, P., Roberts, J., James, D., Benetti, M., Wistel, K., Billingham, J., Forrester, S.Published in Sports Engineering (2023)“…Mechanical testing of synthetic turf football surfaces is considered essential to ensure player performance and safety. However, it remains unknown how well the mechanical outputs reflect player perceptions of these surfaces. …”
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Molecular hydrogen mitigates performance decrement during repeated sprints in professional soccer players
Botek, M., Khanna, D., Krejci, Krejcí, J., Valenta, M., McKune, A., Sládecková, B., Klimesov, Klimešová, I.Published in Nutrients (2022)“…However, its effect on repeated sprint performance is unknown. The aim of this study was to assess the effect of pre-exercise HRW consumption on repeated sprint performance, lactate, and perceptual responses using a repeated sprint protocol. …”
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Three-dimensional mechanics of the rugby tackle, does the ball carrier alter their movement into contact in response to the tackler`s position
Edwards, S., Tahu, T., Buchanan, M., Tucker, R., Fuller, G., Gardner, A. J.Published in International Journal of Sports Science & Coaching (2022)“…The extent to which a ball carrier may alter their approach entering a tackle in response the tackler s body height is unknown. This exploratory study aimed to identify if, when and how, the ball carrier modified their motion when being tackled in response to tackling instructions given to the tackler. …”
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Single and serial carbohydrate mouth rinsing do not improve Yo-Yo Intermittent Recovery Test performance in soccer players
Nehme, R., de Branco, F. M., Vieira, P. F., Guimarães, A. V. C., Gomes, G. K., Teixeira, G. P., Rodrigues, P. H., de Castro Junior, L. M., Puga, G. M., Saunders, B., de Oliveira, E. P.Published in International Journal of Sport Nutrition and Exercise Metabolism (2022)“…However, its effects on intermittent exercise are unclear. It is also unknown whether serial CHO mouth rinses can promote additional ergogenic effects when compared with a single mouth rinse. …”
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Postmatch recovery practices carried out in professional football: a survey of 56 portuguese professional football teams
Querido, S. M., Brito, J., Figueiredo, P., Carnide, F., Vaz, J. R., Freitas, S. R.Published in International Journal of Sports Physiology and Performance (2022)“…However, the recovery methods that professional football teams put in place up to 72 hours postmatch are widely unknown. Purpose: This study aimed to characterize the postmatch recovery practices in Portuguese football teams in different postmatch periods and match locations. …”
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Gastrocnemius medialis muscle-tendon properties and their relationship with power and reactive strength in elite youth soccer players
Robshaw, D. C.Published 2020“…However, the influence of the gastrocnemius medialis (GM) MTU on power and reactive strength in elite youth soccer players (ESP) is currently unknown. Before assessing MTU properties and KPIs in ESP, it is important to understand the reproducibility of the respective assessment methods. …”
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Eccentric hamstring strength and sprinting performance changes during the off-season in Spanish footballers
Vicens-Bordas, J., Esteve, E., Fort-Vanmeerhaeghe, A., Casals, M., Bandholm, T., Ishoi, L., Opar, D., Shield, A., Thorborg, K.Published in British Journal of Sports Medicine (2021)“…Background Low eccentric hamstring strength and sprinting performance are associated with hamstring injury (HI) in football; however, the off-season effects on both qualities are unknown. Objective The aim of the study was to investigate eccentric hamstring strength and sprinting performance changes during the off-season period in football players. …”
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Genetic polymorphisms related to VO2max adaptation are associated with elite rugby union status and competitive marathon performance
Hall, E. C. R., Almeida, S. S., Heffernan, S. M., Lockey, S. J., Herbert, A. J., Callus, P., Day, S. H., Pedlar, C. R., Kipps, C., Collins, M., Pitsiladis, Y. P., Bennett, M. A., Kilduff, L. P., Stebbings, G. K., Erskine, R. M., Williams, A. G.Published in International Journal of Sports Physiology and Performance (2021)“…However, the genotype distribution of selected polymorphisms in athletic cohorts is unknown, with their influence on performance characteristics also undetermined. …”
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The nordic hamstring exercise - is it a part of the weekly training in female elite football?
Linnebjerg, C., Mette, H., Bek, C. M., Bencke, J., Oxfeldt, M., Sonne, M. B., Karlsson, M., Hölmich, P., Zebis, M. K.Published in British Journal of Sports Medicine (2021)“…Background The hamstring muscle strengthening is an integral part of validated injury prevention programs in football. However, it is unknown whether hamstring muscle strengthening exercises are used in female elite football.…”