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The number of directional changes alters the physiological, perceptual and neuromuscular responses of netball players during intermittent shuttle running
Ashton, Ruth Twist, Craig
Ashton, Ruth
Twist, Craig
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2015-10-31
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Abstract
This study investigated whether an increased number of changes in direction altered the metabolic, cardiovascular, perceptual and neuromuscular responses to intermittent shuttle running. Using a randomized crossover design, ten female netball players completed 30 min of intermittent shuttle running over a 10 m (ISR10) and 20 m (ISR20) linear course. Measures of expired air, heart rate (HR), RPE, blood lactate concentration ([BLa]) and peak torque of knee extensors and flexors were measured. Differences (% ± 90% CL) in VO2 (1.5 ± 5.6%) was unclear between conditions, while HR was possibly higher (1.5 ± 2.5%) and [BLa] very likely lower in ISR20 compared to ISR10 (-32.7 ± 9.9%). RPE was likely lower in the ISR20 compared to the ISR10 condition at 15 (-5.0 ± 5.0%) and mosly likely lower at 30 min (-9.4 ± 2.0%). Sprint times over 20 m were likely slower during ISR20 at mid (3.9 ± 3.2%) but unclear post (2.1 ± 5.4%). Changes in muscle function were not different between ISR10 and ISR20 conditions for knee extension (-0.2 ± 0.9%) but were likely different for knee flexion (-5.7 ± 4.9%). More directional changes during shuttle running increases the physiological and perceptual load on female athletes that also causes a greater reductions in knee extensor torque. These findings have implications for the effective conditioning and injury prevention of female team sport athletes.
Citation
Ashton, R. & Twist, C. (2015). The number of directional changes alters the physiological, perceptual and neuromuscular responses of netball players during intermittent shuttle running. Journal of Strength and Conditioning Research, 29(10), 2731-2737. DOI: 10.1519/JSC.0000000000000933
Publisher
Lippincott, Williams & Wilkins
Journal
Journal of Strength and Conditioning Research
Research Unit
DOI
10.1519/JSC.0000000000000933
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PubMed Central ID
Type
Article
Language
en
Description
This is a non-final version of an article published in final form in Journal of Strength and Conditioning Research, Vol 29, issue 10, October 2015.
Series/Report no.
ISSN
1064-8011
EISSN
1533-4287