JOURNAL OF SPORTS SCIENCE & MEDICINE
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Research article  


The 8th Australasian Conference on Mathematics and Computers in Sport, 3-5 July 2006, Queensland, Australia


'RESTING TOUCHER': A TIME AND MOTION ANALYSIS OF ELITE LAWN BOWLS


Aaron J. Silk1, John Hammond2 and Robert P. Weatherby1


1Department of Exercise Science & Sport Management, Southern Cross University, Lismore, NSW, Australia.
2School of Education, Southern Cross University, Lismore, NSW, Australia.



Published 15 December 2006

© Journal of Sports Science and Medicine (2006) 5, 582 - 589
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ABSTRACT
Whilst numerous investigations have explored the physical demands placed upon competitive sportspeople from a wide array of sports little is known about the physical demands placed on lawn bowlers. The purpose of this study was to ascertain the movement activities of Australian representative singles and pairs players and to determine the frequency and duration of these activities. One match each of two male and two female players (one singles and one pairs player per gender) were videotaped during an international tournament. During playback of the videotaped matches (n = 4), a single observer coded the players' activities into five distinct categories (waiting, walking forward, walking backward, jogging and bowling) using a computerised video editing system (Gamebreaker™ Digital Video Analysis System). Field calibration of players over 30m for forward motions and 15m for the backward motion was performed to allow for the estimation of total distance covered during the match. Heart rate was monitored during each match. The duration of a match was found to be (mean ± SD) 1hr 28 ± 15mins. The total distance covered during each match was 2093 ± 276m. The mean percentage of match time spent in each motion was: waiting, 61.8 ± 9.3%; walking forward, 22.3 ± 5.6%; walking backward, 2.0 ± 0.4%; jogging, 1.1 ± 0.5%; and bowling, 8.5 ± 4.2%. Average heart rate was found to be 57 ± 7% of age-predicted HRmax with a maximum of 78 ± 9% of age-predicted HRmax. The results of this study suggest that playing lawn bowls at an international level requires light-moderate intensity activity similar to that reported for golf.

KEY WORDS: Frequency, mean duration, heart rate, energy expenditure.


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