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. METHODS:Using single leg (left) drop landing (3 landings per session) onto a force plate, the athlete completed 6 sessions prior (healthy) and 3 sessions post-ACL injury/surgery. Maximum vertical ground reaction force (vGRF), time to stabilisation (TTS) and outputs from fPCA (fPC scores) for the healthy sessions were used to develop intra-athlete means and standard deviations for each variable. Post-surgery measures were given z-scores relative to the healthy mean and standard deviation for each variable. The standard normal deviate (z = 1.96) was used as a threshold to flag landings that could be indicative of changes in movement behaviour. RESULTS:Maximum vGRF revealed no post-surgery trials that exceeded the standard normal deviate threshold based on the healthy data. TTS identified one landing post-surgery that exceeded the threshold. Scores for fPC2, fPC3 and fPC4 revealed landings that exceeded the threshold, with fPC4 demonstrating landings greater than the threshold for every trial (except two) post-surgery. CONCLUSIONS:Including fPCA identified significant and stable changes to the landing strategy (particularly within fPC4). When used in conjunction with other measures such as maximum vGRF and TTS, fPCA has the potential to provide meaningful insights into athlete monitoring models regarding changes to movement characteristics after injury.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Stephens JM,Chapman DW,Tate K,Warmenhoven Jdoi
10.1016/j.jsams.2019.03.010subject
Has Abstractpub_date
2020-03-01 00:00:00pages
241-245issue
3eissn
1440-2440issn
1878-1861pii
S1440-2440(18)30275-5journal_volume
23pub_type
杂志文章abstract：OBJECTIVES:This study examined the contribution of sports participation to overall moderate-to-vigorous physical activity (MVPA) among adolescents, and explored potential moderators. DESIGN:Cross-sectional observational study using survey and accelerometry data drawn from the NEighbourhood Activity in Youth (NEArbY) s...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.06.009
更新日期：2019-10-01 00:00:00
abstract：OBJECTIVES:The tackle event in rugby union ('rugby') contributes to the majority of players' injuries. Referees can reduce this risk by sanctioning dangerous tackles. A study in elite adult rugby suggests that referees only sanction a minority of illegal tackles. The aim of this study was to assess if this finding was ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.10.016
更新日期：2018-06-01 00:00:00
abstract：:Many overweight and obese individuals have difficulty in performing aerobic fitness tests that require maximal exertion. Therefore, the purpose of this study was to investigate the reliability of the Aerobic Power Index (API) submaximal aerobic exercise test, as well as associated variables consisting of oxygen uptake...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2006.05.024
更新日期：2007-06-01 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：: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：OBJECTIVES:We aimed to clarify whether a short-term whole body vibration training has a beneficial effect on bone mass and structure in elderly men and women. DESIGN:Randomised controlled trial. METHODS:A total of 49 non-institutionalised elderly (20 men and 29 women) volunteered to participate in the study. Particip...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.jsams.2013.04.020
更新日期：2014-03-01 00:00:00
abstract：:Research which has examined the catastrophe models of anxiety and performance is discussed. The conclusion drawn is that the evidence supports the notion of hysteresis, and partially supports the interactive effects prediction of the catastrophe models. Two potential explanations of anxiety induced performance catastr...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(99)80175-3
更新日期：1999-10-01 00:00:00
abstract：OBJECTIVES:This study investigated indirect measures of post-exercise parasympathetic reactivation (using heart-rate-variability, HRV) and sympathetic withdrawal (using systolic-time-intervals, STI) following upper- and lower-body exercise. DESIGN:Randomized, counter-balanced, crossover. METHODS:13 males (age 26.4±4....
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.2018.01.015
更新日期：2018-10-01 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：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：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 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:Winter sports are high-energy outdoor activities involving high velocities and acrobatic maneuvers, thus raising safety concerns. Specific studies on the impact mechanics of back protectors are very limited. In this study analytical and numerical models are developed to rationalize results of impact experime...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.10.007
更新日期：2019-08-01 00:00:00
abstract：OBJECTIVES:To quantify and profile the training and match loads of international footballers as they transition from club-to-camp-to-tournament contexts during multiple international tournaments. DESIGN:Retrospective single-cohort observational study. METHODS:External (session duration and count) and internal (sessio...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.02.006
更新日期：2019-08-01 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:Despite evidence suggesting caution, employment of body mass index (BMI, kgm-2) as a proxy for percentage of body fat (PFat) in longitudinal studies of children and adolescents remains commonplace. Our objective was to test the validity of change in BMI as a proxy for change in PFat measured by dual-energy X...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.08.002
更新日期：2019-03-01 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: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：:Children's physical activity (PA) patterns change from day to day. This intra-individual variability affects precision when measuring key physical activity and sedentary behaviour variables. This paper discusses strategies used to reduce the random error associated with intra-individual variability and demonstrates th...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2008.09.009
更新日期：2009-09-01 00:00:00
abstract：OBJECTIVES:In winter terrain parks special airbags are used for skiers and snowboarders to practice jumps and achieve safe landings. However, in 2010 two skiers landed at the end of oval airbags. One suffered fatal, the other severe, injuries. The aim of this study was to identify parameters that lead to jumping over t...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.09.229
更新日期：2019-08-01 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:Despite the known benefits of physical activity, the majority of adults in developed countries lead sedentary lifestyles. The community setting is a promising venue for physical activity-promoting interventions. Our objectives were to investigate the effectiveness of community-based physical activity interve...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2013.04.009
更新日期：2014-05-01 00:00:00
abstract：:The aim was to investigate the effects of fatigue induced by electrical stimulation superimposed onto voluntary muscular contractions on postural abilities and strategy (n=8). Two groups of subjects performed a fatiguing of the triceps surae, the first by voluntary muscular contractions (group VOL) and the second (n=8...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.10.006
更新日期：2009-01-01 00:00:00
abstract：OBJECTIVES:Knee injury prevention programs (IPPs) reduce knee and anterior cruciate ligament (ACL) injury rates in female athletes, however, implementation of IPPs is low. The purpose of this study was to identify barriers to implementation of IPPs among collegiate women's soccer coaches. DESIGN:Cross-sectional survey...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.09.016
更新日期：2020-09-29 00:00:00
abstract：OBJECTIVES:Muscle damage symptoms induced by unaccustomed eccentric contraction exercise can be reduced by repeating the experience several times. This phenomenon is termed the repeated bout effect. Although traditional biochemical markers require invasive blood sampling, biochemical measurements have recently been dev...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.12.023
更新日期：2020-06-01 00:00:00
abstract：:The purpose of the present study was to accurately and reliably analyse the nature of movement undertaken by National Rugby League (NRL) referees during matches played in the 2000 season. The movements of NRL referees (n=5) were analysed from videotape footage of ten games. The researchers assigned each movement to on...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(03)80027-0
更新日期：2003-09-01 00:00:00
abstract：UNLABELLED:Previous studies on vibration training have all been based on protocols at different combinations of frequencies and amplitudes without controlling the loading intensity. OBJECTIVES:This study investigated the effect of an 8-week vibration training program, under identical acceleration loads with various fr...
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.2013.02.010
更新日期：2014-01-01 00:00:00
abstract：OBJECTIVES:To explore the association between electronic media exposure (television viewing time, personal computer/video game use, total screen time), and waist circumference and body mass index, and study whether this association is independent of cardiorespiratory fitness, in a representative sample of adolescents f...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2013.09.010
更新日期：2014-09-01 00:00:00
abstract：:Injuries cause more morbidity among soldiers in the U.S. Army than any other health condition. Over two-thirds of U.S. soldiers' injuries occur gradually from cumulative micro-traumatic damage to the musculoskeletal system as a result of physical training activities. Paradoxically, the very physical training activitie...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.02.011
更新日期：2018-11-01 00:00:00
abstract：OBJECTIVES:To investigate whether genetic variants can be correlated with tendinopathy in elite male volleyball athletes. DESIGN:Case-control study. METHODS:Fifteen single nucleotide polymorphisms within BMP4, FGF3, FGF10, FGFR1 genes were investigated in 138 elite volleyball athletes, aged between 18 and 35 years, w...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.02.011
更新日期：2015-03-01 00:00:00
