Abstract
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 |
|---|---|
| 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 - 1 Dec 2015 |
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Keywords
- Impact biomechanics
- injury prevention
- sports performance
- scrummaging technique
- wearable sensors
- pressure
Cite this
Pre-binding prior to full engagement improves loading conditions for front row players in contested rugby union scrums. / Preatoni, Ezio; Cazzola, Dario; Stokes, Keith; England, Michael; Trewartha, Grant.
In: Scandinavian Journal of Medicine and Science in Sports, Vol. 26, No. 12, 01.12.2015, p. 1398-1407.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Pre-binding prior to full engagement improves loading conditions for front row players in contested rugby union scrums
AU - Preatoni, Ezio
AU - Cazzola, Dario
AU - Stokes, Keith
AU - England, Michael
AU - Trewartha, Grant
PY - 2015/12/1
Y1 - 2015/12/1
N2 - 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.
AB - 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.
KW - Impact biomechanics
KW - injury prevention
KW - sports performance
KW - scrummaging technique
KW - wearable sensors
KW - pressure
U2 - 10.1111/sms.12592
DO - 10.1111/sms.12592
M3 - Article
VL - 26
SP - 1398
EP - 1407
JO - Scandinavian Journal of Medicine and Science in Sports
JF - Scandinavian Journal of Medicine and Science in Sports
SN - 0905-7188
IS - 12
ER -