Abstract：
:Based on the course-of-action theory, this study performed a situated analysis of three elite aerial freestyle skiers' activity. Data were collected by observation, videotaping and self-confrontation interviews retrospectively build the athletes' activity. The analysis identified units of action, thought, and feelings and described their relationships during each leap. Comparisons of the different courses of action revealed six components of freestyle skiers' activity: (1) pick up speed in the descent, (2) manage the curve of the tremplin, (3) take-off, (4) manage the exit of the tremplin, (5) perform rotations, and (6) organize the landing. This study revealed the dynamic and situated property of acrobatic activity. As the leap unfolded, the athletes step-by-step enhanced their knowledge of what was occurring and what they would have to do to perform their best and land on their feet. Points of convergence and divergence with other acrobatic performances are discussed.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Hauw D,Renault G,Durand Mdoi
10.1016/j.jsams.2007.06.005subject
Has Abstractpub_date
2008-09-01 00:00:00pages
481-6issue
5eissn
1440-2440issn
1878-1861pii
S1440-2440(07)00140-5journal_volume
11pub_type
杂志文章abstract：:Changes in magnitude and timing of rearfoot eversion and tibial internal rotation by foot orthoses and their contributions to vertical ground reaction force and knee joint moments are not well understood. The objectives of this study were to test if orthoses modify the magnitude and time to peak rearfoot eversion, tib...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2008.05.001
更新日期：2009-11-01 00:00:00
abstract：:Although injuries to golfers are not common, both survey studies and hospital emergency department records have provided objective evidence that golfers are sometimes at risk of injury. While many golf injury studies describe the associated mechanisms and types of injuries, less attention has been given to research re...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/s1440-2440(00)80049-3
更新日期：2000-03-01 00:00:00
abstract：OBJECTIVES:To determine the feasibility of a clinical trial that compares a 6-week, physiotherapist-guided gait retraining program with a foot orthoses intervention in runners with patellofemoral pain. DESIGN:Pilot randomised controlled trial. METHODS:Runners aged 18-40 years with clinically diagnosed patellofemoral ...
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.2017.09.187
更新日期：2018-05-01 00:00:00
abstract：OBJECTIVES:Despite physical literacy receiving increased attention as a potential gateway to physical activity participation, research establishing the link between physical literacy as a higher-order latent construct and physical activity is scant. The purpose of this study was to identify physical literacy profiles o...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.05.007
更新日期：2020-11-01 00:00:00
abstract：:The progress of injury prevention research in Australian football to date has been slow despite its recognition as a public health goal. In particular, field-based studies to identify injury risk factors and evaluate the effectiveness of injury prevention strategies need to be undertaken to ensure safety gains in this...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(03)80259-1
更新日期：2003-06-01 00:00:00
abstract：OBJECTIVES:The aim of this study was to investigate relationships between trait emotional intelligence and emotional state changes over the course of an ultra-endurance foot race covering a route of approximately 175 miles (282 km) and held in set stages over six days. DESIGN:A repeated measures field design that soug...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2011.03.001
更新日期：2011-07-01 00:00:00
abstract：OBJECTIVES:To determine the utility of the King-Devick (K-D) test in identifying sports-related concussion in semi-professional rugby players. DESIGN:Descriptive cohort study. METHODS:176 male players were recruited from a semi-professional rugby union competition in New Zealand (NZ). Baseline K-D scores were obtaine...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.02.002
更新日期：2017-08-01 00:00:00
abstract：OBJECTIVES:To investigate the independent and combined associations of objectively measured moderate-to-vigorous physical activity (MVPA) and sedentary time (ST) with reading and arithmetic skills. DESIGN:Cross-sectional/prospective. METHODS:Participants were 89 boys and 69 girls aged 6-8 years. MVPA and ST were meas...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2016.11.003
更新日期：2017-06-01 00:00:00
abstract：:We investigated the key beliefs to target in interventions aimed at increasing physical activity (PA) among mothers and fathers of young children. Parents (288 mothers and 292 fathers) completed a Theory of Planned Behaviour belief-based questionnaire and a 1-week follow-up of PA behaviour. We found that a range of be...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2010.07.004
更新日期：2011-03-01 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：OBJECTIVES:With increasingly sedentary lifestyles, opportunities for physical activity such as active transport to school need to be promoted in adolescents. This study examines personal, social and environmental correlates of active transport to school among adolescents including sociodemographics, behavioural pattern...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.06.012
更新日期：2015-07-01 00:00:00
abstract：OBJECTIVES:To help clinicians understand the clinical relevance of subacromial bursa (SAB) thickness on ultrasound investigations in marathon swimmers. DESIGN:A prospective, observational cohort study. METHODS:Twenty two open-water marathon swimmers entered in a 19.7km open-water event received comprehensive, bilater...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.05.004
更新日期：2015-07-01 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: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：:The purpose of this study was to assess the validity and reliability of a Cosmed K4b2 portable telemetric gas analysis system. Twelve physically fit males performed a treadmill running session consisting of an easy 10 min run, a hard 3 min run and a 1 min sprint (with rest periods of 10 min separating each run), on fo...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(04)80039-2
更新日期：2004-03-01 00:00:00
abstract：OBJECTIVES:To determine, in conjunction with a wider investigation, whether 11 genetic variants in the vicinity of vitamin D, collagen and Wnt signalling pathways were associated with stress fracture injury in the Stress Fracture Elite Athlete (SFEA) cohort. DESIGN:Genotype-phenotype association study. METHODS:Self-r...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.10.038
更新日期：2018-06-01 00:00:00
abstract：OBJECTIVES:Biochemical (e.g. creatine kinase (CK)) and neuromuscular (e.g. peak power output (PPO)) markers of recovery are expensive and require specialist equipment. Perceptual measures are an effective alternative, yet most validated scales are too long for daily use. DESIGN:This study utilises a longitudinal multi...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2016.09.012
更新日期：2017-05-01 00:00:00
abstract：OBJECTIVES:To evaluate the validity of an integrated accelerometer and Global Positioning System (GPS) device to quantify swimming kinematics variables in swimming. DESIGN:Criterion validation study. METHODS:Twenty-one sub-elite swimmers completed three 100 m efforts (one butterfly, breaststroke and freestyle) in an ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2013.04.007
更新日期：2014-03-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to determine whether ActiGraph accelerometer activity counts and estimates of moderate-to-vigorous physical activity collected at a single larger epoch are comparable to those collected at smaller epochs reintegrated into a larger epoch. DESIGN:A cross-sectional study design. ...
journal_title：Journal of science and medicine in sport
pub_type： 临床试验,杂志文章
doi：10.1016/j.jsams.2012.05.015
更新日期：2013-03-01 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 determined whether perceptually-regulated, high-intensity intermittent runs in hypoxia and normoxia induce similar running mechanics adjustments within and between intervals. DESIGN:Within-participants repeated measures. METHODS:Nineteen trained runners completed a high-intensity intermittent running pr...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.04.001
更新日期：2020-11-01 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 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：:To delineate and compare the isokinetic neck strength profile of senior elite rugby players. One hundred and eighty-nine rugby players (mean; 95% confidence intervals: 24.31; 23.87-24.75 years) were sampled from South African provincial teams and assessed anthropometrically and isokinetically according to a set protoc...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.01.009
更新日期：2008-04-01 00:00:00
abstract：:The benefit of job-related employment standards in physically demanding occupations are well known. A number of methodological frameworks have been established to guide the development of physical employment standards for single job functions. In the case of an organisation comprised of multiple and diverse employment...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2018.02.008
更新日期：2018-11-01 00:00:00
abstract：:This study examined the relationship between the bowling workload of first-class fast bowlers and injury with the aim of identifying a "safe" fast bowling workload threshold. Twelve male fast bowlers (mean age 25 years) from an Australian state cricket squad were observed for the 1999--2000 cricket season. Workload wa...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(04)80014-8
更新日期：2004-06-01 00:00:00
abstract：OBJECTIVES:To investigate changes in renal status from exercise in the heat with acclimatisation and to evaluate surrogates markers of Acute Kidney Injury. DESIGN:Prospective observational cohort study. METHODS:20 male volunteers performed 60 min standardised exercise in the heat, at baseline and on four subsequent o...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.04.010
更新日期：2019-09-01 00:00:00
abstract：:We compared anthropometric and fitness performance data from graduate male youth players from an elite soccer academy who on leaving the institution were either successful or not in progressing to higher standards of play. Altogether, 161 players were grouped according to whether they achieved international or profess...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2008.07.004
更新日期：2010-01-01 00:00:00
abstract：OBJECTIVES:To determine the residual acute vibration-stretching effect on preactivation levels, short-latency stretch reflex, and performance during execution of drop jumps. DESIGN:Repeated measures. METHODS:Eleven male recreational athletes performed a set of three 45cm drop jumps before and immediately after a 30s ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2012.11.886
更新日期：2013-09-01 00:00:00
abstract：OBJECTIVES:This paper sought to determine the psychological characteristics and skills that are fundamental to batting success in the sport of cricket. DESIGN AND METHOD:Following on from the findings of an earlier qualitative investigation which suggested that a favourable mix of psychological attributes and skills a...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2011.07.003
更新日期：2012-01-01 00:00:00
