Relationships between match activities and peak power output and Creatine Kinase responses to professional reserve team soccer match-play

Russell, Mark; Sparkes, William; Northeast, Jonathan; Cook, Christian J.; Bracken, Richard M.; Kilduff, Liam P.

doi:10.1016/j.humov.2015.11.011

Cited by 78 publications

(111 citation statements)

References 29 publications

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“…10 Hz units have been shown previously to be more reliable than 5Hz when assessing team sport movement patterns 20,21 , and the manufacturer of these specific units have been utilised for other elite rugby and soccer studies analysing acceleration profiles. 8,22,23,24 The units were turned on approximately four hours prior to kick-off to gain signal and satellites for 30 min in the centre of the pitch. They were turned off to save battery, and switched on again one hour prior to kick off.…”

Section: Methodsmentioning

confidence: 99%

The ball in play demands of international rugby union

Pollard

Turner

Eager

et al. 2018

Journal of Science and Medicine in Sport

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This study uses a novel method of accurately assessing the BiP demands of rugby union. It also reports typical and maximal demands of international rugby union that can be used by practitioners and scientists to target training of worst-case scenario's equivalent to international intensity. Backs covered greater distances at higher speeds and demonstrated higher HML, in general play as well as 'worst case scenarios'; conversely forwards perform a higher number of collisions.

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Section: Methodsmentioning

confidence: 99%

The ball in play demands of international rugby union

Pollard

Turner

Eager

et al. 2018

Journal of Science and Medicine in Sport

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“…For example, Varley et al, [32] reported that a 10 Hz GPS unit was two to three times more accurate for instantaneous velocity during tasks completed at a range of velocities compared to a criterion measure, 6 times more reliable for measuring maximum instantaneous velocity and had a coefficient of variation less than or similar to the calculated smallest worthwhile change [33] during all phases of acceleration/deceleration. More specifically this brand of GPS devices has been used in team sports to assess movement demands during training and competitive matches [13, 34–39]. In our study, all participants were already familiarized with the devices as part of their day-to-day training and playing practices.…”

Section: Methodsmentioning

confidence: 99%

Movement Demands of Elite Under-20s and Senior International Rugby Union Players

et al. 2016

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This study compared the movement demands of elite international Under-20 age grade (U20s) and senior international rugby union players during competitive tournament match play. Forty elite professional players from an U20 and 27 elite professional senior players from international performance squads were monitored using 10Hz global positioning systems (GPS) during 15 (U20s) and 8 (senior) international tournament matches during the 2014 and 2015 seasons. Data on distances, velocities, accelerations, decelerations, high metabolic load (HML) distance and efforts, and number of sprints were derived. Data files from players who played over 60 min (n = 258) were separated firstly into Forwards and Backs, and more specifically into six positional groups; FR–Front Row (prop & hooker), SR–Second Row, BR–Back Row (Flankers & No.8), HB–Half Backs (scrum half & outside half), MF–Midfield (centres), B3 –Back Three (wings & full back) for match analysis. Linear mixed models revealed significant differences between U20 and senior teams in both the forwards and backs. In the forwards the seniors covered greater HML distance (736.4 ± 280.3 vs 701.3 ± 198.7m, p = 0.01) and severe decelerations (2.38 ± 2.2 vs 2.28 ± 1.65, p = 0.05) compared to the U20s, but performed less relative HSR (3.1 ± 1.6 vs 3.2 ± 1.5, p < 0.01), moderate (19.4 ± 10.5 vs 23.6 ± 10.5, p = 0.01) and high accelerations (2.2 ± 1.9 vs 4.3 ± 2.7, p < 0.01) and sprint•min-1 (0.11 ± 0.06 vs 0.11 ± 0.05, p < 0.01). Senior backs covered a greater relative distance (73.3 ± 8.1 vs 69.1 ± 7.6 m•min-1, p < 0.01), greater High Metabolic Load (HML) distance (1138.0 ± 233.5 vs 1060.4 ± 218.1m, p < 0.01), HML efforts (112.7 ± 22.2 vs 98.8 ± 21.7, p < 0.01) and heavy decelerations (9.9 ± 4.3 vs 9.5 ± 4.4, p = 0.04) than the U20s backs. However, the U20s backs performed more relative HSR (7.3 ± 2.1 vs 7.2 ± 2.1, p <0.01) and sprint•min-1 (0.26 ± 0.07 vs 0.25 ± 0.07, p < 0.01). Further investigation highlighted differences between the 6 positional groups of the teams. The positional groups that differed the most on the variables measured were the FR and MF groups, with the U20s FR having higher outputs on HSR, moderate & high accelerations, moderate, high & severe decelerations, HML distance, HML efforts, and sprints•min-1. For the MF group the senior players produced greater values for relative distance covered, HSR, moderate decelerations, HML distance and sprint•min-1. The BR position group was most similar with the only differences seen on heavy accelerations (U20s higher) and moderate decelerations (seniors higher). Findings demonstrate that U20s internationals appear to be an adequate ‘stepping stone’ for preparing players for movement characteristics found senior International rugby, however, the current study highlight for the first time that certain positional groups may require more time to be able to match the movement demands required at a higher playing level than others. Conditioning staff must also bear in mind that the U20s players whilst maintaining or improvin...

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“…The multifactorial role for protein in recovery includes facilitating muscle repair, muscle remodeling, and immune function. The intermittent and multi-directional nature of movement patterns performed by team sport athletes [15, 16] require repeated eccentric muscle contractions and explain, at least in part, the indices of muscle damage (e.g., soreness and impaired function) often experienced 2–3 days after match-play [17–19]. In the context of repairing damaged muscle protein, mixed results have been reported in studies administering intact protein sources [20–23].…”

Section: Overview Of Protein Carbohydrates and Fluidsmentioning

confidence: 99%

Selected In-Season Nutritional Strategies to Enhance Recovery for Team Sport Athletes: A Practical Overview

et al. 2017

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Team sport athletes face a variety of nutritional challenges related to recovery during the competitive season. The purpose of this article is to review nutrition strategies related to muscle regeneration, glycogen restoration, fatigue, physical and immune health, and preparation for subsequent training bouts and competitions. Given the limited opportunities to recover between training bouts and games throughout the competitive season, athletes must be deliberate in their recovery strategy. Foundational components of recovery related to protein, carbohydrates, and fluid have been extensively reviewed and accepted. Micronutrients and supplements that may be efficacious for promoting recovery include vitamin D, omega-3 polyunsaturated fatty acids, creatine, collagen/vitamin C, and antioxidants. Curcumin and bromelain may also provide a recovery benefit during the competitive season but future research is warranted prior to incorporating supplemental dosages into the athlete’s diet. Air travel poses nutritional challenges related to nutrient timing and quality. Incorporating strategies to consume efficacious micronutrients and ingredients is necessary to support athlete recovery in season.

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Relationships between match activities and peak power output and Creatine Kinase responses to professional reserve team soccer match-play

Cited by 78 publications

References 29 publications

The ball in play demands of international rugby union

The ball in play demands of international rugby union

Movement Demands of Elite Under-20s and Senior International Rugby Union Players

Selected In-Season Nutritional Strategies to Enhance Recovery for Team Sport Athletes: A Practical Overview

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