Documents

DOI

  • David Shearer
  • Liam Kilduff
  • Emily Sheppy
  • Samuel Hills
  • Mark Russell
  • Ryan Chambers
  • Dan Cunningham
  • Shane Heffernan
  • Mark Waldron
  • Melitta McNarry
Objectives

To profile the distances covered during international women’s rugby union match-play and assess the duration-specific worst-case scenario locomotor demands over 60-s to 600-s epochs, whilst comparing the values determined by fixed epoch (FIXED) versus rolling average (ROLL) methods of worst-case scenario estimation and assessing positional influences.

Design

Descriptive, observational.

Methods

Twenty-nine international women’s rugby union players wore 10 Hz microelectromechanical systems during eight international matches (110 observations). Total, and per-half, distances were recorded, whilst relative total and high-speed (>4.4 m s−1) distances were averaged using FIXED and ROLL methods over 60–600-s. Linear mixed models compared distances covered between match halves, assessed FIXED versus ROLL, and examined the influence of playing position.

Results

Players covered ∼5.8 km match−1, with reduced distances in the second- versus first-half (p < 0.001). For worst-case scenario total (∼8–25%) and high-speed (∼10–26%) distance, FIXED underestimated ROLL. In ROLL, worst-case scenario relative total and high-speed distances reduced from ∼144−161 m min−1 and ∼30−69 m min−1 over 60-s, to ∼80 89 m min−1 and ∼5 16 m min−1 in the 600-s epoch, respectively. Forwards performed less high-speed running over all epochs and covered less total distance during epochs of 60-s, 180-s, 420-s and 480-s, compared with backs. Front row players typically returned the lowest locomotor demands.

Conclusions

This is the first study reporting the positional and worst-case scenario demands of international women’s rugby union, and indicates an underestimation in FIXED versus ROLL over 60-s to 600-s epochs. Knowledge of the most demanding periods of women’s rugby union match-play facilitates training specificity by enabling sessions to be tailored to such demands.

Original languageEnglish
Number of pages6
JournalJournal of Science and Medicine in Sports
Early online date20 Dec 2019
DOIs
StateE-pub ahead of print - 20 Dec 2019

    Research areas

  • Team sport, Physiology, Monitoring, Fatigue, Activity profiles, Running

ID: 3618778