Abstract：
:High ground reaction forces during the front foot contact phase of the bowling action are believed to be a major contributor to the high prevalence of lumbar stress fractures in fast bowlers. This study aimed to investigate the influence of front leg technique on peak ground reaction forces during the delivery stride. Three-dimensional kinematic data and ground reaction forces during the front foot contact phase were captured for 20 elite male fast bowlers. Eight kinematic parameters were determined for each performance, describing run-up speed and front leg technique, in addition to peak force and time to peak force in the vertical and horizontal directions. There were substantial variations between bowlers in both peak forces (vertical 6.7 ± 1.4 body weights; horizontal (braking) 4.5 ± 0.8 body weights) and times to peak force (vertical 0.03 ± 0.01 s; horizontal 0.03 ± 0.01 s). These differences were found to be linked to the orientation of the front leg at the instant of front foot contact. In particular, a larger plant angle and a heel strike technique were associated with lower peak forces and longer times to peak force during the front foot contact phase, which may help reduce the likelihood of lower back injuries.
journal_name
J Sports Scijournal_title
Journal of sports sciencesauthors
Worthington P,King M,Ranson Cdoi
10.1080/02640414.2012.736628subject
Has Abstractpub_date
2013-01-01 00:00:00pages
434-41issue
4eissn
0264-0414issn
1466-447Xjournal_volume
31pub_type
杂志文章abstract：:This study involved a systematic video analysis of 16 anterior cruciate ligament (ACL) injuries sustained by elite-level netball players during televised games in order to describe the game situation, the movement patterns involved, the player's behaviour, and a potential injury mechanism. Eight of the ACL injuries we...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2015.1121285
更新日期：2016-08-01 00:00:00
abstract：:The aim of this study was to determine whether a relationship exists between stroke parameters and critical swimming speed (which is defined as the speed that can theoretically be maintained without exhaustion). Stroke parameters (stroke rate and length) and velocity were recorded for each 25-m length during a control...
journal_title：Journal of sports sciences
pub_type： 杂志文章
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abstract：:The literature related to Borg's ratings of perceived exertion (RPE) scale has revealed inconsistencies about the strength of the relationship between ratings of perceived exertion and various physiological criterion measures, such as heart rate, blood lactate concentration, percent maximal oxygen uptake (%VO2max), ox...
journal_title：Journal of sports sciences
pub_type： 杂志文章,meta分析
doi：10.1080/026404102320761787
更新日期：2002-11-01 00:00:00
abstract：:We examined the influence of caffeine supplementation on cognitive performance and perceptual responses in female team-game players taking low-dose monophasic oral contraceptives of the same hormonal composition. Ten females (24 ± 4 years; 59.7 ± 3.5 kg body mass; 2-6 training sessions per week) took part in a randomi...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
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更新日期：2016-01-01 00:00:00
abstract：:An analysis system for barbell weightlifting exercises is proposed to record reliable performance and neuromuscular responses. The system consists of surface electromyography (sEMG) synchronized with electrogoniometry and a barbell position transducer. The purpose of this study was to establish the reliability of the ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2011.588956
更新日期：2011-10-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章
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journal_title：Journal of sports sciences
pub_type： 杂志文章
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journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2020.1764898
更新日期：2020-09-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章
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journal_title：Journal of sports sciences
pub_type： 临床试验,杂志文章
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pub_type： 杂志文章
doi：10.1080/02640414.2019.1570590
更新日期：2019-07-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2017.1420453
更新日期：2018-08-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410410001675342
更新日期：2004-05-01 00:00:00
abstract：:Artificial turf is being used more and more often. It is more available than natural turf for use, requires much less maintenance and new products are able to comply with sport performance and athletes' safety. The purpose of this paper is to compare the mechanical and biomechanical responses of two different artifici...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2012.750005
更新日期：2013-01-01 00:00:00
abstract：:Front crawl swimmers often restrict the number of breaths they take during a race because of the possible adverse effects of the breathing action on resistance or stroke mechanics. The aim of this study was to determine whether differences exist in the kinematics of the trunk and upper extremity used during preferred-...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/026404199365551
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journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2012.738923
更新日期：2013-01-01 00:00:00
abstract：:To determine if a 36-h fast affects the central and peripheral components of VO2 during submaximal exercise and peak oxygen uptake (VO2 peak), 10 physically healthy males exercised first for 10 min at approximately 60% of their VO2 peak and then to fatigue. Their cardiovascular responses were compared with those of 10...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640419508732240
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journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2016.1156241
更新日期：2016-07-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2018.1522699
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pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：2016-12-01 00:00:00
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journal_title：Journal of sports sciences
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journal_title：Journal of sports sciences
pub_type： 杂志文章
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journal_title：Journal of sports sciences
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journal_title：Journal of sports sciences
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journal_title：Journal of sports sciences
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abstract：:The aim of this study was to quantify movements of Super 12 rugby players in competition because information on elite rugby players' movements is unavailable. Players were categorized into forwards [front (n = 16) and back row (n = 15)] and backs [inside (n = 9) and outside backs (n = 7)] and their movements analysed ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
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更新日期：2005-05-01 00:00:00
