Abstract：
:The purpose of this study was to examine the effect of anaerobic fatigue and training status on the joint stiffness (JS) regulation of the lower limbs. Twenty-two subjects participated in this study, with a group of athletes (ATH: n=11, age: 22.1+/-9.9 yrs, ht: 181.9+/-6.3 cm, mass: 88.2+/-12.7 kg) compared to a group of non-athletes (NON: n=11, age: 20.9+/-2.3 yrs, ht: 177.8+/-7.1cm, mass: 80.9+/-22.0 kg). A modified phosphate decrement test, which consisted of eight 35 m timed sprints separated by a 30s active recovery, allowed for inducement of anaerobic fatigue while incorporating measures of sprinting performance and JS. Assessment of JS consisted of a single-legged 2.2 Hz spring-mass hopping protocol, measured for each limb. This test was performed prior to the warm-up and after sprints two, four and six. Data analysis consisted of repeated measures MANOVA comparing groups, limbs and test. Repeated measures ANOVAs were also performed on the sprint times and the magnitude of inter-limb JS difference. For all data analysis the alpha level was set at p<0.05. Assessment of between limb JS revealed that the ATH group possessed significantly lower inter-limb variation in comparison with the NON group after completion of the first pair of sprints, potentially due to their training status offsetting some of the mechanical and neuromuscular effects of repeated stretch-shortening cycle (SSC) fatigue. This enhanced ability to regulate inter-limb JS, in addition to enhancing performance, may reduce the risk of injury by preserving mechanical efficiency and therefore reducing metabolic cost during SSC contractions.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Clark RAdoi
10.1016/j.jsams.2007.12.003subject
Has Abstractpub_date
2009-05-01 00:00:00pages
406-10issue
3eissn
1440-2440issn
1878-1861pii
S1440-2440(07)00293-9journal_volume
12pub_type
杂志文章abstract：OBJECTIVES:While previous studies have demonstrated an ergogenic effect of sport compression garments in exercise performance and recovery, the possible underlying mechanisms remain unclear. Claims for improved venous return from wearing sport compression garments with a low compression pressure remain unproven. The ai...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jsams.2017.12.004
更新日期：2018-10-01 00:00:00
abstract：:Early childhood is a critical period for the development of fundamental movement skills (FMS). Children who do not master FMS are more likely to experience failure in the motor domain and less likely to participate in sport and games during childhood and adolescence. Studies among primary school aged children report l...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2009.05.010
更新日期：2010-09-01 00:00:00
abstract：OBJECTIVES:This research explores snowsport injury trends in western Canadian resorts over the decade 2008-2018. DESIGN:Ecological study. METHODS:Injury and participation data on alpine skiing and snowboarding was provided by the Canada West Ski Areas Association for 2008-2018. Inclusion criteria were met by 29 of 52...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.12.001
更新日期：2020-12-11 00:00:00
abstract：OBJECTIVES:Our study objectives were twofold: 1) examine whether users and non-users of different types of sport supplements vary in doping attitudes and sport supplement beliefs, and 2) determine whether the type of sport supplement is directly and indirectly (via sport supplement beliefs) related to doping attitudes....
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.09.012
更新日期：2020-09-23 00:00:00
abstract：:The purpose of this study was to determine if three training loads equated by volume differed in terms of the temporal, kinematic and kinetic characteristics of each set. Twelve experienced weightlifters (30.2+/-10.6 years old and 75.8+/-13.0 kg) performed three sets (6 x 30% 1RM, 3 x 60% 1RM and 2 x 90% 1RM) of balli...
journal_title：Journal of science and medicine in sport
pub_type： 临床试验,杂志文章
doi：10.1016/s1440-2440(04)80004-5
更新日期：2004-06-01 00:00:00
abstract：OBJECTIVES:This study aimed to determine adjustments in spring-mass model characteristics, plantar loading and foot mobility induced by an exhaustive run. DESIGN:Within-participants repeated measures. METHODS:Eleven highly-trained adolescent middle-distance runners ran to exhaustion on a treadmill at a constant veloc...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.01.007
更新日期：2015-03-01 00:00:00
abstract：:The aim of the present study was to evaluate and compare the upper-body aerobic fitness characteristics in 2 groups of competitive surfers with different performance levels. Thirteen male competitive surfers performed an incremental dry-land board paddling test to determine specific peak oxygen uptake (VO2peak), peak ...
journal_title：Journal of science and medicine in sport
pub_type： 临床试验,杂志文章
doi：10.1016/s1440-2440(05)80023-4
更新日期：2005-03-01 00:00:00
abstract：OBJECTIVES:It has been hypothesised that fatigue may be a major factor in tackle-related injury risk in rugby union and hence more injuries occur in the later stages of a game. The aim of this study is to identify changes in ball carrier or tackler proficiency characteristics, using elite level match video data, as pla...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.06.023
更新日期：2018-02-01 00:00:00
abstract：OBJECTIVES:Muscular strength is an important component of fitness that enables the execution of a range of daily activities across the lifespan including sport participation. The purpose of this study was to examine changes in children's standing broad jump, an indicator of muscular strength, between 1985 and 2015. DE...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.04.005
更新日期：2018-10-01 00:00:00
abstract：OBJECTIVE:To reduce the number of transgressions to the rule, the occurrence of violent acts and to prevent injuries, Hockey Québec adopted the Fair-Play Program (FPP). The objective of the present study was to evaluate the effectiveness of the FPP. METHODS:52 Bantam (14-15 years) teams participated in this cohort stu...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(05)80040-4
更新日期：2005-09-01 00:00:00
abstract：OBJECTIVES:Investigate sociodemographic factors associated with physical activity and sport participation among Indigenous children registered in the New South Wales (NSW) government-funded Active Kids voucher program in 2018, including comparison with non-Indigenous children. DESIGN:Cross-sectional study. METHODS:Th...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.06.016
更新日期：2020-12-01 00:00:00
abstract：:This study investigated the amount of physical activity that occurs during normal working hours, highlighting the occupational differences in physical activity by occupational category. Data were collected by means of a self-administered questionnaire (Tecumseh Occupational Physical Activity Questionnaire [TOQ]), whic...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(03)80266-9
更新日期：2003-12-01 00:00:00
abstract：OBJECTIVES:Methodological concerns relating to acute-to-chronic workload ratios (ACWR) have been raised. This study aimed to assess the relationship between an alternative predictor variable named 'differential load', representing the smoothed week-to-week rate change in load, and injury risk in first class county cric...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.01.004
更新日期：2020-06-01 00:00:00
abstract：:The purpose of this research was to evaluate a reactive agility test by determining the relationships between the total time recorded for the test and various components. A tester used side-step movements to provide a stimulus for the athlete to change direction. By using electronic timing and high speed video analysi...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2009.05.006
更新日期：2010-05-01 00:00:00
abstract：OBJECTIVES:Current best evidence has reported that therapeutic exercise programs that are designed to treat patellofemoral pain (PFP) should include both hip and knee specific exercises. The purpose of this review was to (1) examine the quality/comprehensiveness of exercise reporting in this field; (2) quantify the ext...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2020.09.001
更新日期：2020-09-10 00:00:00
abstract：:Historically, research into possible causes of exercise-induced fatigue has been found to span numerous scientific disciplines, including medicine, psychology, physiology, neurophysiology, biochemistry, biomechanics, and physics. In order to better understand the mechanisms responsible for fatigue, these disciplines h...
journal_title：Journal of science and medicine in sport
pub_type： 社论
doi：10.1016/j.jsams.2006.07.015
更新日期：2007-10-01 00:00:00
abstract：OBJECTIVES:As time with patients and resources are increasingly limited, it is important to determine if clinical tests can provide further insight into real-world behaviors linked to clinical outcomes. The purpose of this study was to determine which aspects of anthropometry and physical fitness testing are associated...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.12.005
更新日期：2020-06-01 00:00:00
abstract：:This study determined the pacing strategies and performance responses of six well-trained cyclists/triathletes (peak O2 uptake 66.4+/-3.7 ml x kg(-1) x min(-1), mean+/-SD) during seven simulated time-trials (TT) conducted on a wind-braked cycle ergometer. All subjects first performed a 40 km familiarisation ride (TT1)...
journal_title：Journal of science and medicine in sport
pub_type： 临床试验,杂志文章
doi：10.1016/s1440-2440(01)80031-1
更新日期：2001-06-01 00:00:00
abstract：OBJECTIVES:We tested the hypothesis that fast skeletal muscle troponin I (fsTnI) concentration in serum would increase more than those of slow skeletal muscle troponin I (ssTnI) after eccentric exercise of the elbow flexors using a sensitive blood marker to track fibre specific muscle damage. DESIGN:Observational comp...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2012.05.006
更新日期：2013-01-01 00:00:00
abstract：OBJECTIVES:This study aimed to assess the feasibility and efficacy of the Great Leaders Active StudentS (GLASS) program, a school-based peer-led physical activity and object control skill intervention. DESIGN:The study employed a quasi-experimental design. METHODS:The study was conducted in two elementary schools, on...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,多中心研究
doi：10.1016/j.jsams.2017.04.016
更新日期：2017-12-01 00:00:00
abstract：:The objective of this study was to analyze changes in stroke rate (SR), stroke length (SL) and stroke phases (entry and catch, pull, push and recovery) when swimming at (MLSS) and above (102.5% MLSS) the maximal lactate steady state. Twelve endurance swimmers (21±8 year, 1.77±0.10 m and 71.6±7.7 kg) performed in diffe...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2010.08.004
更新日期：2011-03-01 00:00:00
abstract：OBJECTIVES:The health benefits from participation in half-marathon is challenged by a yearly running-related injury (RRI) incidence proportion exceeding 30%. Research in injury etiology is needed to successfully prevent injuries. The body's load capacity is believed to play an essential role for injury development. The...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.08.014
更新日期：2019-03-01 00:00:00
abstract：OBJECTIVES:To determine the incidence of illness, and identify the relationship between sleep, training load and illness in nationally competitive Australian football athletes. Second, to assess multivariate effect between training load and/or sleep variables. DESIGN:Cohort study. METHODS:Retrospective analyses of pr...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.06.011
更新日期：2019-02-01 00:00:00
abstract：OBJECTIVES:This project examined the movement strategies adopted by highly experienced older aged lawn bowlers when performing Draw and Drive deliveries. DESIGN:Cross-sectional. METHODS:Twenty five experienced (10.2 ± 7.8 years) older aged lawn bowlers (67.3 ± 7.0 years) who play lawn bowls at least once per week vol...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.04.005
更新日期：2019-09-01 00:00:00
abstract：:Falls affect a significant number of older Australians and present a major challenge to health care providers and health systems. The purpose of this statement is to inform and guide exercise practitioners and health professionals in the safe and effective prescription of exercise for older community-dwelling people w...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,实务指引,评审
doi：10.1016/j.jsams.2011.04.001
更新日期：2011-11-01 00:00:00
abstract：OBJECTIVES:Athletes who train indoors during the winter months exhibit low serum 25-hydroxyvitamin D [25(OH)D] concentrations due to a lack of sunlight exposure. This has been linked to impaired exercise performance. The purpose of this study was to assess the effects of oral vitamin D₃ supplementation on selected phys...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2013.03.007
更新日期：2014-01-01 00:00:00
abstract：OBJECTIVES:To compare 12 weeks of exercise training at two intensities on oxidative stress, antioxidants and inflammatory biomarkers in patients with type 2 diabetes (T2D). DESIGN:Randomized trial. METHODS:Thirty-six participants with T2D were randomized to complete either 12 weeks of treadmill based high-intensity i...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jsams.2017.03.014
更新日期：2017-10-01 00:00:00
abstract：OBJECTIVES:To examine how clinically measured hip motion is related to shoulder biomechanics during the pitching motion. DESIGN:Cross-sectional. METHODS:Bilateral hip rotational range of motion was measured clinically among 34 collegiate baseball pitchers. External rotation torque and maximum horizontal adduction ran...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.07.011
更新日期：2015-09-01 00:00:00
abstract：OBJECTIVES:To explore the hip and knee joint kinematics as well as muscle activation between participants with patellofemoral pain syndrome (PFPS) and controls, and to investigate the immediate effect of proximal femoral rotational taping on pain, joint kinematics, and muscle activation during single-leg squat (SLS). ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.07.009
更新日期：2015-07-01 00:00:00
abstract：OBJECTIVES:To determine the effects of "strides" with a weighted-vest during a warm-up on endurance performance and its potential neuromuscular and metabolic mediators. A bout of resistance exercise can enhance subsequent high-intensity performance, but little is known about such priming exercise for endurance performa...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2013.12.005
更新日期：2015-01-01 00:00:00
