Abstract：
:In the present study, we examined the influence of shoe lacing on foot biomechanics in running. Twenty experienced rearfoot runners ran in six different lacing conditions across a force platform at a speed of 3.3 m . s(-1). Foot pronation during contact, tibial acceleration, and plantar pressure distribution of the right leg were recorded. The test conditions differed in the number of laced eyelets (1, 2, 3, 6 or 7) and in lacing tightness (weak, regular or strong). The results show reduced loading rates (P < 0.05) and pronation velocities (P < 0.01) in the tightest and highest lacing conditions. The lowest peak pressures under the heel and lateral midfoot (P < 0.01) were observed in the high (seven-eyelet) lacing pattern. Regular six-eyelet cross-lacing resulted in higher loading rates (P < 0.05) and higher peak heel pressures (P < 0.01) than seven-eyelet lacing, without any significant differences in perceived comfort. The low lace shoe conditions resulted in lower impacts (P < 0.01) and lower peak pressures under metatarsal heads III and V (P < 0.01), which is probably induced by the foot sliding within the shoe. A firm foot-to-shoe coupling with higher lacing leads to a more effective use of running shoe features and is likely to reduce the risk of lower limb injury.
journal_name
J Sports Scijournal_title
Journal of sports sciencesauthors
Hagen M,Hennig EMdoi
10.1080/02640410802482425subject
Has Abstractpub_date
2009-02-01 00:00:00pages
267-75issue
3eissn
0264-0414issn
1466-447Xpii
907362237journal_volume
27pub_type
杂志文章abstract：:It is shown how to derive the appropriate cubic equation relating power and the effects of friction, gradient and wind resistance on the speed of a human-powered vehicle (HPV). The effects of gradient and wind resistance are explored for parameters representing a typical racing cyclist. The principal conclusion may be...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640419408732191
更新日期：1994-10-01 00:00:00
abstract：:The aims of this study were to examine the changes in plasma concentrations of inflammatory cytokines induced by training and competition in professional cyclists. We report the serum concentrations of interleukin-6 (IL-6), tumour necrosis factor alpha (TNF-a), tumour necrosis factor receptors I and II (TNFR-I and -II...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640410500141158
更新日期：2006-06-01 00:00:00
abstract：:Despite low mineral intakes in several groups of female 'ball-game' players, investigations of blood profiles and physical performance do not indicate any evident physiological benefits of micronutrient supplementation. Nevertheless, measurements of iron status are warranted, particularly in female athletes. Iron ther...
journal_title：Journal of sports sciences
pub_type： 杂志文章,评审
doi：
更新日期：1994-07-01 00:00:00
abstract：:Drag is the resistant force that opposes a swimmer displacing through water and significantly affects swimming performance. Drag experienced during active swimming is called active drag (Da), and its direct determination is still controversial. By contrast, drag experienced while gliding in a stable streamlined body p...
journal_title：Journal of sports sciences
pub_type： 杂志文章,评审
doi：10.1080/02640414.2018.1547099
更新日期：2019-05-01 00:00:00
abstract：:Few studies have focused on the effect of posture during sprint start. The aim of this study was to measure the effect of the modification of horizontal distance between the blocks during sprint start on three dimensional (3D) joint angular velocity. Nine trained sprinters started using three different starting positi...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2012.729076
更新日期：2013-01-01 00:00:00
abstract：:This study aimed to evaluate the autonomic modulation of heart rate in sedentary paraplegics and paraplegic wheelchair basketball players with thoracic spinal cord injury below T6. Seven paraplegic wheelchair basketball players (active paraplegic group), five paraplegics who were not involved in regular exercise (sede...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2012.734917
更新日期：2013-01-01 00:00:00
abstract：:The presence of the relative age effect (RAE) has been widely reported; however, its underlying causes have not yet been determined. With this in mind, the present study examined if anthropometry and performance were different amongst older and younger soccer players born in the same year. Eighty-eight young soccer pl...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2013.832355
更新日期：2014-01-01 00:00:00
abstract：:In the present study, we examine specifically how the sensory conditions available during physical practice of a task might influence the subsequent use of motor imagery. First, as a pre-test, participants had to physically reproduce knee joint positions with or without vision. Second, they practised motor imagery (15...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640410903555855
更新日期：2010-03-01 00:00:00
abstract：:The inflammatory responsive cytokine interleukin-6 (IL-6) helps regulate immune responses to exercise. Evidence suggests that increases in IL-6 are related to exercise duration and intensity. However, the moderating effect of sex and underlying mediators have received limited attention. We compared plasma IL-6 respons...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410500245645
更新日期：2006-08-01 00:00:00
abstract：:Composite materials have given manufacturers the freedom to develop a broad range of tennis rackets, allowing them to change key parameters such as the structural stiffness, mass, and position of the balance point. The aim of this research was to determine how changing these parameters could affect ball resultant rebo...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2010.526131
更新日期：2011-02-01 00:00:00
abstract：:The aim of this study was to assess which of the equations that estimate peak power output and maximal oxygen uptake (VO2max) in the velodrome adapt best to the measurements made by reference systems. Thirty-four endurance cyclists and triathletes performed one incremental test in the laboratory and two tests in the v...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410701646245
更新日期：2008-04-01 00:00:00
abstract：:An important goal of the athlete's everyday diet is to provide the muscle with substrates to fuel the training programme that will achieve optimal adaptation for performance enhancements. In reviewing the scientific literature on post-exercise glycogen storage since 1991, the following guidelines for the training diet...
journal_title：Journal of sports sciences
pub_type： 杂志文章,评审
doi：10.1080/0264041031000140527
更新日期：2004-01-01 00:00:00
abstract：:In this study, we examined the relationship between anthropometric, strength and power characteristics of rugby forwards, their body position when scrummaging, and their ability to apply force when scrummaging. Force applied to an instrumented scrum machine was measured for 56 players, both individually and as scrum p...
journal_title：Journal of sports sciences
pub_type： 临床试验,杂志文章
doi：10.1080/026404100364974
更新日期：2000-04-01 00:00:00
abstract：:We analysed stroke phases and arm and leg coordination during front crawl swimming with and without a wet suit. Twelve nationally and internationally ranked French male triathletes performed three swim trials in randomized order using the front crawl stroke with and without a wet suit. All triathletes swam at three di...
journal_title：Journal of sports sciences
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1080/0264041031000140419
更新日期：2003-12-01 00:00:00
abstract：:The purpose of the study was to examine the health effects of 8 weeks of recreational badminton in untrained women. Participants were matched for maximal oxygen uptake (V̇O2max) and body fat percentage and assigned to either a badminton (n = 14), running (n = 14) or control group (n = 8). Assessments were conducted pr...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2016.1210819
更新日期：2017-06-01 00:00:00
abstract：:Emotions experienced before and during sports competition have been found to influence sports performance. Emotion regulation is defined as the automatic or deliberate use of strategies to initiate, maintain, modify or display emotions (Gross & Thompson, 2007) and is proposed to occur when a discrepancy exists between...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2012.693621
更新日期：2012-01-01 00:00:00
abstract：:Application of machine learning techniques has the potential to yield unseen insights into movement and permits visualisation of complex behaviours and tangible profiles. The aim of this study was to identify profiles of relative motor competence (MC) and movement behaviours in pre-school children using novel analytic...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2019.1686942
更新日期：2020-01-01 00:00:00
abstract：:Fundamental movement skills (FMS) are the basic building blocks of more advanced, complex movements required to participate in physical activity. This study examined FMS proficiency across the full range of Irish primary school children (n = 2098, 47% girls, age range 5-12 years). Participants were assessed using the ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2019.1651144
更新日期：2019-11-01 00:00:00
abstract：:The relationships between team performance indicators and match outcome have been examined in many team sports, however are limited in Australian Rules football. Using data from the 2013 and 2014 Australian Football League (AFL) regular seasons, this study assessed the ability of commonly reported discrete team perfor...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2015.1066026
更新日期：2016-01-01 00:00:00
abstract：:The effect of alcohol ingestion before exercise on blood haemostasis is not known. The present study examined the effects of moderate alcohol ingestion on blood haemostatic variables at rest and in response to exercise. Eleven normal healthy individuals randomly performed two tests separated by 7 days. A moderate dose...
journal_title：Journal of sports sciences
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1080/026404199365821
更新日期：1999-06-01 00:00:00
abstract：:The aim of this study was to compare selected physiological variables and performance markers of soldiers from two "elite" units of the British Army. Ten soldiers from each of the two units were recruited for this study (n = 20). All participants completed three tests while carrying a 20 kg backpack load: (1) a maxima...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410500230811
更新日期：2006-06-01 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：10.1080/02640414.2013.789921
更新日期：2013-01-01 00:00:00
abstract：:This study investigated the influence of the regression model and initial intensity during an incremental test on the relationship between the lactate threshold estimated by the maximal-deviation method and performance in elite-standard runners. Twenty-three well-trained runners completed a discontinuous incremental r...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2013.862844
更新日期：2014-01-01 00:00:00
abstract：INTRODUCTION:High-Intensity Interval Training (HIIT) and Constant-Intensity Endurance Training (CIET) improves peak oxygen uptake (V̇O2) similarly in adults; but in children this remains unclear, as does the influence of maturity. METHODS:Thirty-seven boys formed three groups: HIIT (football; n = 14; 14.3 ± 3.1 years)...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2019.1644890
更新日期：2019-11-01 00:00:00
abstract：:The aim of the present study was to determine the effect of post-exercise ingestion of a unique, high molecular weight glucose polymer solution, known to augment gastric emptying and post-exercise muscle glycogen re-synthesis, on performance during a subsequent bout of intense exercise. On three randomized visits, eig...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640410701361548
更新日期：2008-01-15 00:00:00
abstract：:The aim of this study was to integrate both dispositional and situational factors to examine their interactive ability to predict pre-competitive goal states of task and ego involvement in a sample of National junior tennis players. The Task and Ego Orientation in Sport Questionnaire (Chi and Duda, 1995) and a set of ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640419808559364
更新日期：1998-05-01 00:00:00
abstract：:The present retrospective study intended to determine age, performance, the role of nationality and participation trends across calendar years in runners competing in "Comrades Marathon", the ultra-marathon with the longest tradition and the highest number of finishers worldwide. We analysed 235,467 finishers (40,211 ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2018.1559979
更新日期：2019-06-01 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
doi：10.1080/02640414.2015.1052746
更新日期：2016-01-01 00:00:00
abstract：:This study used a quasi-applied research model to identify and develop potentially talented female soccer players. Athletes aged 15-19 years with a background in team ball sports or athletics were targeted for recruitment using advertisements and promotions through various media. Interested athletes attended a 2-day p...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410050120122
更新日期：2000-09-01 00:00:00
abstract：:This paper describes an analytical method for the design of iron golf club heads. The method divides the club head into the basic shape and the back-weighting. The basic shape, which consists of the club face profile, hosel and club face-hosel blend section, is configured directly from geometric specifications. An ada...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640419608727716
更新日期：1996-08-01 00:00:00
