Time-motion analysis of work-rate in first-class cricket fielding
University of Wales Institute Cardiff
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This study aimed to quantify player movements during first-class cricket fielding and to examine any differences between sessions using computerised time-motion analysis. The entire fielding activity of 27 first-class cricketers was observed for 10-overs in real-time using CAPTAIN software. An inter-observer reliability study revealed no difference in the distribution of match time (χ26 = 0.24, P = 0.99). Eight first-class cricketers performed 15 m speed trials for distance estimation. There were no differences in any time-motion variable between sessions (P > 0.05). Overall players changed movement every 6.4 ± 1.1 s (mean ± s) and fielded the ball 0.5 ± 0.4 times per over. Mean distribution of match time was 55.4 ± 8.1% stationary, 38.7 ± 7.7% walking, 0.9 ± 0.6% shuffling, 3.5 ± 2.0% jogging, 0.3 ± 0.3% running, 0.3 ± 0.2% high-intensity fielding and 0.7 ± 0.5% low-intensity fielding. Mean high-intensity activity (HI) represented 1.6 ± 0.8% of match time. A mean burst duration of 1.3 ± 0.3 s and mean recovery duration of 99.8 ± 94.5 s produced a work-to-rest ratio of 1:83.9 ± 64.5 s. Repeated sprints (3 sprints with less than 21 s mean recovery) occurred on 32 occasions over the 27 observations, averaging as 3.9 ± 1.1 bursts of 1.2 ± 0.5 s duration with 17.2 ± 2.3 s recoveries. Fielders covered an estimated 15.5 km in a day. In conclusion, fielding specific training should comprise 1-2 s bursts with 90 s recoveries, including sessions of repeated sprinting with shorter recoveries. First-class cricketers should be able to cover large distances during a days fielding, thus relevant aerobic conditioning should be completed. However, fielding is only one facet of cricket, therefore conditioning should be in conjunction with batting and bowling training and preparation for each session should not differ.
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