Abstract：
:The aims of this study were to assess the durations of the different arm and leg stroke phases (propulsion, glide, and recovery) and the temporal arm-leg gaps between 12 competitive and 12 recreational breaststroke swimmers. The mean ages and best times for a 50-m breaststroke were, respectively, (recreational: 16.9+/-1.6 y; 49.55+/-3.38 s; competitive: 16.2+/-1.5 y; 33.85+/-1.96 s). Each swimmer was required to swim 2 x 25-m breaststroke at two different paces (slow and sprint) while being videotaped by two underwater cameras (frontal and lateral views). At the same given speed, recreational swimmers used no glide phase which increased the relative contribution of their recovery and propulsive phases. This was mainly caused by the superposition of their leg extension and the second part of their arm recovery, indicating a technique with no glide time between the arm recovery and the leg extension. In terms of phase duration, the recreational swimmers spent more time in arm recovery and in propulsive phases. Furthermore, it was observed that for a comparable increase of swimming speed (recreational: 23.3%, competitive: 22.6%), competitors switched from a glide to an overlapped coordination while recreational swimmers adopted an overlapped technique whatever the swimming speed. As a result, the relative time spent in propulsive phases did not change in the recreational group, but increased by 27.2% in the competitive one. In a swimming developmental program, particular emphasis should be put on arm-leg coordination drills, when considering the breaststroke.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Leblanc H,Seifert L,Chollet Ddoi
10.1016/j.jsams.2008.01.001subject
Has Abstractpub_date
2009-05-01 00:00:00pages
352-6issue
3eissn
1440-2440issn
1878-1861pii
S1440-2440(08)00002-9journal_volume
12pub_type
杂志文章abstract：OBJECTIVES:To systematically review the current body of research that has investigated changes in strength-related variables during different phases of the menstrual cycle in eumenorrheic women. DESIGN:Systematic review and meta-analysis. METHODS:A literature search was conducted in Pubmed, SPORTDiscus and Web of Sci...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2020.04.022
更新日期：2020-12-01 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
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：:We challenge the tradition of fitness testing in schools on the basis of purpose, procedures and outcomes. A number of assumptions about validity of selected tests are raised. The need to be able to track fitness through childhood into adulthood is challenged with limited scientific evidence of longitudinal tracking. ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2006.01.002
更新日期：2006-05-01 00:00:00
abstract：OBJECTIVES:To compare knee confidence and kinesiophobia (fear of re-injury) in those with and without knee osteoarthritis following anterior cruciate ligament reconstruction, and determine whether poorer knee confidence is associated with greater kinesiophobia, worse knee-related symptoms, and functional impairments in...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.09.011
更新日期：2015-09-01 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：OBJECTIVES:The purpose of this meta-analysis was to examine the effect of flywheel (FW) resistance training with Eccentric Overload (FW-EOT) on muscle size and functional capacities (i.e. strength and power) in athletes and healthy subjects, and to compare FW-induced adaptations with those triggered by traditional resi...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.jsams.2017.03.004
更新日期：2017-10-01 00:00:00
abstract：OBJECTIVES:To explore the practicality of using functional principal components analysis (fPCA) and intra-athlete z-score changes for individual athlete monitoring post-ACL injury and surgery. DESIGN:A single athlete case study using within-athlete repeated measures in the context of applied athlete monitoring. METHO...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.03.010
更新日期：2020-03-01 00:00:00
abstract：OBJECTIVES:To investigate the effects of vitamin D supplementation on muscle strength in healthy individuals. DESIGN:A systematic review with meta-analysis. METHODS:In October 2013 a computerised literature search of three databases (PubMed, Web of Knowledge and Scopus) was performed. Included in the review were cont...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.jsams.2014.07.022
更新日期：2015-09-01 00:00:00
abstract：:This study examined the thermoregulatory responses in field hockey goalkeepers during games (Part A), and assessed the effect of heat stress on hockey-specific response time (Part B). In Part A, core temperature (T(c)), skin temperature (T(sk)), body mass, fluid consumption and heart rate (HR) responses of six goalkee...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2009.03.009
更新日期：2010-05-01 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:To characterise foot strike and observe change in foot strike patterns with increasing distance during a 15km recreational running road race. To assess the impact of foot strike on running performance. DESIGN:Observational cross-sectional study. METHODS:Foot strike patterns were determined at the 3km and 1...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.12.018
更新日期：2020-06-01 00:00:00
abstract：OBJECTIVES:This study examined whether young (15-19 years old) high-performance netball players exhibit different landing mechanics compared to female controls who do not participate in sports requiring frequent landings. DESIGN:Comparative, cross-sectional. METHODS:Lower limb kinematics and kinetics from 23 youth hi...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.08.017
更新日期：2020-01-01 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：:Osteoarthritis (OA) is the most common form of arthritis and is a major cause of disability in people aged over 65. Despite the major socioeconomic burden imposed by OA, the aetiology of this condition remains unclear. Although controversial, several metabolic factors have been implicated in the disease pathogenesis. ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/s1440-2440(04)80030-6
更新日期：2004-09-01 00:00:00
abstract：:A paucity of empirical research exists into surf lifesaving competition from which coaches and athletes may formulate training and recovery strategies. Seventeen (male=9; female=8) high-performance surf lifesavers (21.2+/-3.9 years) contested multiple rounds of team and individual events at a 2-day surf lifesaving com...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.10.008
更新日期：2009-01-01 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：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：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：UNLABELLED:Health benefits from children's independent mobility and active travel beyond school travel are largely unexplored. OBJECTIVES:This review synthesized the evidence for associations of independent mobility and active travel to various destinations with physical activity, sedentary behaviour and weight status...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2012.11.001
更新日期：2013-07-01 00:00:00
abstract：:Groin pain is a condition with a high prevalence in young Australian football players. It is considered that early identification of this condition allows for optimal management. Eighty-six players from two elite under-age Australian football sides were screened weekly for hip adductor muscle strength, using a hand-he...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2009.03.007
更新日期：2010-03-01 00:00:00
abstract：OBJECTIVES:Resistance exercise is used as a non-pharmacological tool to elicit both gains in and maintenance of physical function in the elderly. Thus, the present study examined the acute response of creatine kinase and interleukin-6 following an eccentric resistance exercise session in elderly obese women classified ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2013.09.012
更新日期：2014-11-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to determine whether V˙O(2) kinetics and specifically, the time constant of transitions from rest to heavy (τ(p)H) and severe (τ(p)S) exercise intensities, are related to middle distance swimming performance. DESIGN:Fourteen highly trained male swimmers (mean ± SD: 20.5 ± 3.0 yr; 75...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2011.05.012
更新日期：2012-01-01 00:00:00
abstract：OBJECTIVES:To investigate the effects of custom-made foot orthoses on the torque- and power-cadence relationships and perceived comfort during maximal cycling exercises in a population of competitive road cyclists. DESIGN:Randomised, repeated measures, participant-blinded controlled study. METHODS:Twenty-four competi...
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.2015.04.015
更新日期：2016-05-01 00:00:00
abstract：:Attraction to physical activity is important to an individual's intrinsic motivation to engage in play, games and sports. While there are instruments designed to measure attraction to physical activity in middle childhood years, the lack of authentic measures in young children has impeded research in this area. In thi...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2009.05.009
更新日期：2009-09-01 00:00:00
abstract：:This study examined the effects of active warm up on thermoregulatory responses and intermittent-sprint cycle performance in hot conditions (35.5+/-0.6 degrees C, RH 48.7+/-3.4%). Eight trained males performed a 36-min, intermittent-sprint test (IST) after no (WUP 0), 10-min (WUP 10) or 20-min warm up (WUP 20). The IS...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.05.013
更新日期：2009-01-01 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：INTRODUCTION:Injuries sustained by Australian Defence Force (ADF) personnel during non-combat military training and sports activity are associated with increasing costs due to work days lost, medical treatment, compensation, and early retirement. In 2001, the ADF commissioned a systematic review of the evidence-base fo...
journal_title：Journal of science and medicine in sport
pub_type： 评论,杂志文章,评审
doi：10.1016/s1440-2440(04)80049-5
更新日期：2004-03-01 00:00:00
abstract：OBJECTIVES:This study investigated the influence of a moderate caffeine dose on endurance cycle performance and thermoregulation during prolonged exercise in high ambient temperature. DESIGN:Double-blind cross-over study. METHODS:Eight healthy, recreationally active males (mean±SD; age: 22±1 years; body mass: 71.1±8....
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.2017.03.017
更新日期：2017-11-01 00:00:00
abstract：:Tendinopathy is characterised by a disorganised, haphazard healing response with no histological signs of inflammation. Research on tendon injuries is limited to the description of the condition and its management, and the pathogenesis is still ill defined. Together with known intrinsic and extrinsic factors, genetics...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2007.04.007
更新日期：2008-06-01 00:00:00
