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Abstract
We investigated the effect of a ‘PreBind’ engagement protocol on the biomechanics of contested Rugby Union scrummaging at different playing levels. ‘PreBind’ requires front-row props to take a bind on opposing players prior to the engagement, and to maintain the bind throughout the scrum duration.
Twenty-seven teams from five different playing levels performed live scrums under realistic conditions. Video analysis, pressures sensors, and inertial measurement units measured biomechanical outcomes as teams scrummaged following different engagement protocols: the CTPE (referee calls ‘crouch-touch-pause-engage’); the CTS (‘crouch-touch-set’); and, the PreBind (‘crouch-bind-set’) variants.
PreBind reduced the set-up distance between the packs (-27%), and the speed at which they came into contact by more than 20%. The peak biomechanical stresses acting on front rows during the engagement phase were decreased in PreBind by 14-25% with respect to CTPE and CTS, without reducing the capability to generate force in the subsequent sustained push. No relevant main effects were recorded for playing level due to within-group variability and there were no interaction effects between playing level and engagement protocol.
Pre-binding reduced many mechanical quantities that have been indicated as possible factors for chronic and acute injury, and may lead to safer engagement conditions without affecting subsequent performance.
Twenty-seven teams from five different playing levels performed live scrums under realistic conditions. Video analysis, pressures sensors, and inertial measurement units measured biomechanical outcomes as teams scrummaged following different engagement protocols: the CTPE (referee calls ‘crouch-touch-pause-engage’); the CTS (‘crouch-touch-set’); and, the PreBind (‘crouch-bind-set’) variants.
PreBind reduced the set-up distance between the packs (-27%), and the speed at which they came into contact by more than 20%. The peak biomechanical stresses acting on front rows during the engagement phase were decreased in PreBind by 14-25% with respect to CTPE and CTS, without reducing the capability to generate force in the subsequent sustained push. No relevant main effects were recorded for playing level due to within-group variability and there were no interaction effects between playing level and engagement protocol.
Pre-binding reduced many mechanical quantities that have been indicated as possible factors for chronic and acute injury, and may lead to safer engagement conditions without affecting subsequent performance.
Original language | English |
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Pages (from-to) | 1398-1407 |
Number of pages | 10 |
Journal | Scandinavian Journal of Medicine and Science in Sports |
Volume | 26 |
Issue number | 12 |
Early online date | 26 Nov 2015 |
DOIs | |
Publication status | Published - 23 Dec 2016 |
Keywords
- Impact biomechanics
- injury prevention
- sports performance
- scrummaging technique
- wearable sensors
- pressure
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Dive into the research topics of 'Pre-binding prior to full engagement improves loading conditions for front-row players in contested rugby union scrums'. Together they form a unique fingerprint.Projects
- 1 Finished
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Investigating the Mechanisms of Cervical Spine Injury in Rugby Union
Trewartha, G. (PI), Cazzola, D. (CoI), Gheduzzi, S. (CoI), Gill, R. (CoI), Miles, T. (CoI), Preatoni, E. (CoI) & Stokes, K. (CoI)
RFU Injured Players Foundation
1/06/13 → 30/04/17
Project: UK charity
Profiles
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Ezio Preatoni, FISBS, FHEA
- Department for Health - Senior Lecturer
- Centre for Health and Injury and Illness Prevention in Sport
- Bath Institute for the Augmented Human
- Centre for Bioengineering & Biomedical Technologies (CBio)
Person: Research & Teaching, Affiliate staff