Running-intensity fluctuations in elite rugby sevens performance
Article
Furlan, Nicola, Waldron, Mark, Shorter, Kathleen, Gabbett, Tim J., Mitchell, John, Fitzgerald, Edward, Osborne, Mark A. and Gray, Adrian J.. 2015. "Running-intensity fluctuations in elite rugby sevens performance." International Journal of Sports Physiology and Performance. 10 (6), pp. 802-807. https://doi.org/10.1123/ijspp.2014-0315
| Article Title | Running-intensity fluctuations in elite rugby sevens performance |
|---|---|
| ERA Journal ID | 40358 |
| Article Category | Article |
| Authors | Furlan, Nicola (Author), Waldron, Mark (Author), Shorter, Kathleen (Author), Gabbett, Tim J. (Author), Mitchell, John (Author), Fitzgerald, Edward (Author), Osborne, Mark A. (Author) and Gray, Adrian J. (Author) |
| Journal Title | International Journal of Sports Physiology and Performance |
| Journal Citation | 10 (6), pp. 802-807 |
| Number of Pages | 6 |
| Year | 2015 |
| Publisher | Human Kinetics Publishers |
| Place of Publication | United States |
| ISSN | 1555-0265 |
| 1555-0273 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1123/ijspp.2014-0315 |
| Web Address (URL) | https://www.researchgate.net/publication/271331399_Running_Intensity_Fluctuations_in_Elite_Rugby_Sevens_Performance |
| Abstract | Purpose: To investigate temporal variation in running intensity across and within halves and evaluate the agreement between match-analysis indices used to identify fluctuations in running intensity in rugby sevens. Methods: Data from a 15-Hz global positioning system (GPS) were collected from 12 elite rugby sevens players during the IRB World Sevens Series (N = 21 full games). Kinematic (eg, relative distance [RD]) and energetic (eg, metabolic power [MP]) match-analysis indices were determined from velocity-time curves and used to investigate between-halves variations. Mean MP and RD were used to identify peak 2-minute periods of play. Adjacent 2-minute periods (prepeak and postpeak) were compared with peak periods to identify changes in intensity. MP and RD were expressed relative to maximal oxygen uptake (VO<inf>2max</inf>) and speed at VO<inf>2max</inf>, respectively, and compared in their ability to describe the intensity of peak periods and their temporal occurrence. Results: Small to moderate reductions were present for kinematic (RD; 8.9%) and energetic (MP; 6%) indices between halves. Peak periods (RD = 130 m/min, MP =13 W/kg) were higher (P < .001) than the match average (RD = 94 m/min, MP = 9.5 W/kg) and the prepeak and postpeak periods (P < .001). RD underestimated the intensity of peak periods compared with MP (bias 16%, limits of agreement [LoA] ± 6%). Peak periods identified by RD and MP were temporally dissociated (bias 21 s, LoA ± 212 s). Conclusions: The findings suggest that running intensity varies between and within halves; however, the index used will influence both the magnitude and the temporal identification of peak periods. |
| Keywords | energy cost; GPS; match analysis; metabolic power; work rate; acceleration; adult; athletes; athletic performance; biomechanical phenomena; competitive behavior; energy metabolism; football; geographic information systems; humans; Male; Motor Activity; Muscle Strength; Muscle, Skeletal; physical endurance; running; task performance and analysis; time factors; young adult |
| ANZSRC Field of Research 2020 | 420799. Sports science and exercise not elsewhere classified |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | University of New England |
| Australian Catholic University | |
| Australian Institute of Sport, Australia | |
| Rugby Australia, Australia | |
| University of Queensland | |
| Institution of Origin | University of Southern Queensland |
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https://research.usq.edu.au/item/q43vw/running-intensity-fluctuations-in-elite-rugby-sevens-performance
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