Abstract：
:We examined whether maturity, anthropometric profiles and fitness measures vary according to birth date distribution in elite, under-14 youth academy soccer players. The selection year was divided into four quarters, with 160 male players grouped according to individual birth date. Players had their skeletal age determined and were assessed using a battery of standard anthropometric and physical performance tests. Players born across all quarters of the year were investigated for differences in the various performance characteristics using multi- and univariate analyses. An uneven birth distribution was observed, with players born early in the selection year highly represented (P<0.01). A significant difference in height was observed across quarters (P<0.01) with higher values reported in the earlier-born players. No significant differences were observed across any of the fitness measures, although the trend was for players born in the first quarter to out-perform peers born in the later quarters. These findings suggest that the relative age of the performer may not always be linked to a significant advantage in physical components. The selection criteria for entry into the academy may explain the present results.
journal_name
Scand J Med Sci Sportsjournal_title
Scandinavian journal of medicine & science in sportsauthors
Carling C,le Gall F,Reilly T,Williams AMdoi
10.1111/j.1600-0838.2008.00867.xsubject
Has Abstractpub_date
2009-02-01 00:00:00pages
3-9issue
1eissn
0905-7188issn
1600-0838pii
SMS867journal_volume
19pub_type
杂志文章abstract：:The main objective of this systematic review was to examine the effect of reduced muscle activity on the relative number of type 1 muscle fibers (%) in the human vastus lateralis muscle. Other objectives were changes in type 2A and 2X percentages and muscle fiber cross-sectional area. We conducted systematic literatur...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,评审
doi：10.1111/sms.13675
更新日期：2020-08-01 00:00:00
abstract：:The present randomized, double-blind placebo-controlled study aimed at investigating the possible improvement in endurance performance caused by inhaled salmeterol (long-acting beta 2-agonist) and salbutamol (short-acting) compared to placebo in 18 healthy well-trained athletes, aged 17-30 years old. Lung function (fl...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1111/j.1600-0838.1997.tb00133.x
更新日期：1997-06-01 00:00:00
abstract：:The purposes of this study were to demonstrate the transition of heart rate variability (HRV) during trials in the field and to examine the relationship between peak frequency of high-frequency band (HF) and stride frequency. Ten healthy long-distance college female runners (age 19-21 years) performed a 3000 m realist...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2005.00492.x
更新日期：2006-10-01 00:00:00
abstract：:This study focused on identifying the most important factors determining performance in elite-level air rifle shooting technique. Forty international- and national-level shooters completed a simulated air rifle shooting competition series. From a total of 13 795 shots in 319 tests, shooting score and 17 aiming point t...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/sms.12440
更新日期：2016-03-01 00:00:00
abstract：:We compared normalized trapezius muscle activity and intramuscular balance ratios between overhead athletes with impingement symptoms and non-injured athletes during isokinetic abduction and external rotation movements. Thirty-nine overhead athletes with chronic impingement symptoms and 30 non-injured athletes partici...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2006.00570.x
更新日期：2007-02-01 00:00:00
abstract：:This study aimed at evaluating whether addition of extensive upper body training in well-trained cross country skiers induces an adaptation of the triceps brachii (TB) muscle and whether this affects performance. Muscle biopsies were obtained from TB muscle in six male elite cross country skiers before and after 20 we...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2005.00463.x
更新日期：2006-04-01 00:00:00
abstract：:The aim of this study was to estimate the contribution of genetic and environmental influences on motives for engaging in leisure-time physical activity. The participants were obtained from the FinnTwin16 study. A modified version of the Recreational Exercise Motivation Measure was used to assess the motives for leisu...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/sms.12779
更新日期：2017-11-01 00:00:00
abstract：:Among young athletes, sudden deaths are predominantly associated with cardiomyopathies, coronary artery abnormalities and myocarditis, but coronary heart disease is a reality already in this group. The absolute risk of sudden death is, however, low and the benefits of routine medical screening are small. If an athlete...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,评审
doi：10.1111/j.1600-0838.1995.tb00045.x
更新日期：1995-10-01 00:00:00
abstract：:The aim of the study was to estimate active knee flexion and active knee extension in athletes and to investigate the potential association of each to different types of sports activity. Active knee extension and active knee flexion was measured in 339 athletes. Active knee extension was significantly higher in women ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.1999.tb00212.x
更新日期：1999-04-01 00:00:00
abstract：:The kicking skill of the individual player is of great importance in soccer, and two parameters can be identified as being important in soccer kicking--achieving high speed of the ball and accuracy of performance. The purpose of the current study was to examine the influence of different speeds of approach on the maxi...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2009.01024.x
更新日期：2011-02-01 00:00:00
abstract：:This study compared the ventilatory responses and exercise tidal flow-volume (Vt) loops during exercise in order to analyze the influence of gender on breathing strategy in a fit aging population. Sixteen trained elderly men (63.0+/-2.9 years) and eight peer women (62.3 +/- 5.5 years) performed an incremental test on ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2007.00641.x
更新日期：2008-04-01 00:00:00
abstract：:To compare the predictive capacity of experimental pain and exercised-induced pain (EIP) on exercise performance. Thirty-two recreationally active male (n = 23) and female (n = 9) participants were recruited. Participants completed measures of pain tolerance by cold pressor test (CPT), pain pressure threshold via algo...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/sms.12659
更新日期：2017-03-01 00:00:00
abstract：INTRODUCTION:This study examined the impact of a multicomponent physical activity (PA) intervention (MOVI-KIDS) on improving cognition in schoolchildren. This paper also analyzed the mediator role of motor fitness between MOVI-KIDS and cognition. METHODS:Propensity score analysis of data from a cluster randomized cont...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1111/sms.13383
更新日期：2019-05-01 00:00:00
abstract：:The present study examined if an elevated nitrate intake would improve VO(2) kinetics, endurance, and repeated sprint capacity in elite endurance athletes. Ten highly trained cyclists (72 ± 4 mL O(2) /kg/min, mean ± standard deviation) underwent testing for VO(2) kinetics (3 × 6 min at 298 ± 28 W), endurance (120 min ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,随机对照试验
doi：10.1111/sms.12005
更新日期：2013-02-01 00:00:00
abstract：:The purpose of this study was to use the meta-analytic approach to examine the effects of caffeine ingestion on ratings of perceived exertion (RPE). Twenty-one studies with 109 effect sizes (ESs) met the inclusion criteria. Coding incorporated RPE scores obtained both during constant load exercise (n=89) and upon term...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,meta分析,评审
doi：10.1111/j.1600-0838.2005.00445.x
更新日期：2005-04-01 00:00:00
abstract：:The effects of cardiopulmonary baroreceptors and muscle mechanoreceptors stimulation on cardiac baroreflex sensitivity (BRS), and heart rate variability (HRV) were evaluated by measuring continuously and non-invasively systolic blood pressure (SBP) and pulse interval (PI) during upright and supine passive cycling. BRS...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2009.00902.x
更新日期：2010-06-01 00:00:00
abstract：:To describe prospective associations between ambulatory activity (AA), body composition and muscle function in older adults, 697 community-dwelling participants (49% female; mean age=62 ± 7 years) were assessed for changes in body fat and leg lean mass using dual-energy x-ray absorptiometry, leg strength using dynamom...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2010.01229.x
更新日期：2011-12-01 00:00:00
abstract：:The aim of the present study was to examine the associations between adaptive responses to an in-season soccer training camp in the heat and changes in submaximal exercising heart rate (HRex, 5-min run at 9 km/h), postexercise HR recovery (HRR) and HR variability (HRV). Fifteen well-trained but non-heat-acclimatized ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2011.01378.x
更新日期：2011-12-01 00:00:00
abstract：:The objective of this study was to describe injury patterns among elite tug of war athletes, using a survey method. The setting was the World Tug of War (TOW) Championships in 1998. All 990 male and female athletes asked to participate. Demographic data, participation history, and injury history during TOW, including ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1034/j.1600-0838.2002.120209.x
更新日期：2002-04-01 00:00:00
abstract：:Acute adductor injuries account for the majority of acute groin injuries; however, little is known about specific injury characteristics, which could be important for the understanding of etiology and management of these injuries. The study aim was to describe acute adductor injuries in athletes using magnetic resonan...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/sms.12936
更新日期：2018-02-01 00:00:00
abstract：:A bi-directional bicycle pedal that combines proprioceptive training and evertor strengthening has been developed for the treatment of residual instability after ankle sprains. A prospective randomized study was carried out on 19 subjects with recurrent ankle sprains and positive stress X-ray films. The subjects were ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1034/j.1600-0838.2003.10140.x
更新日期：2003-08-01 00:00:00
abstract：:The objective of this study was to compare incidences and patterns of injury for female and male elite teams when playing football on artificial turf and grass. Twenty teams (15 male, 5 female) playing home matches on third-generation artificial turf were followed prospectively; their injury risk when playing on artif...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2010.01118.x
更新日期：2011-12-01 00:00:00
abstract：:To compare post-resistance exercise hypotension (PREH) and its mechanisms in normotensive and hypertensive individuals, 14 normotensives and 12 hypertensives underwent two experimental sessions: control (rest) and exercise (seven exercises, three sets, 50% of one repetition maximum). Hemodynamic and autonomic clinic m...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/sms.12280
更新日期：2015-08-01 00:00:00
abstract：:The relationship between blood rheology and hemodynamics is complex, and the following review presents several aspects of exercise hemorheology, with the focus on both cycling and running as exercise. The scientific literature assessing the effects of warm environment on exercise hemorheology is presented and the pote...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,评审
doi：10.1111/j.1600-0838.2010.01208.x
更新日期：2010-10-01 00:00:00
abstract：:Few studies have examined the possibility that pre- and post-natal factors may be non-linearly associated with later physical activity. We used data from the Norwegian Mother, Father and Child Cohort study (MoBa) and the Medical Birth Registry of Norway (MBRN), including 48 672 children with available data on leisure ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/sms.13781
更新日期：2020-11-01 00:00:00
abstract：BACKGROUND:Hypoestrogenemia due to menopause is associated with increased cardiovascular disease risk, in part due to elevated indexes of aortic wave reflection (AWRI) and central (aortic) blood pressure. We sought to investigate whether AWRI and central blood pressure are also augmented in hypoestrogenic exercise-trai...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/sms.13647
更新日期：2020-06-01 00:00:00
abstract：:The aim of this study was to evaluate and compare the efficacy of different remobilization protocols in different skeletal muscles considering the changes induced by hindlimb suspension of the tail. Thirty-six female Wistar rats were divided into six groups: control I, control II, suspended, suspended free, suspended ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2007.00720.x
更新日期：2008-08-01 00:00:00
abstract：:Relaxin is a hormone structurally related to insulin and insulin-like growth factor, which exerts its regulatory effect on the musculoskeletal and other systems through binding to its receptor in various tissues, mediated by different signaling pathways. Relaxin alters the properties of cartilage and tendon by activat...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,评审
doi：10.1111/sms.12149
更新日期：2014-08-01 00:00:00
abstract：:Patellar tendinopathy (PT) is a common overuse injury of the patellar tendon in jumping athletes. In a recent large cross-sectional study from 2008 several factors were identified that may be associated with the etiology of PT. However, because of the study design no conclusions could be drawn about causal relations. ...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/sms.12294
更新日期：2015-10-01 00:00:00
abstract：:The purpose of this study was to characterize the effect of a 2-week overload period immediately followed by a 1-week taper period on different cognitive processes including executive and nonexecutive functions, and related heart rate variability. Eleven male endurance athletes increased their usual training volume by...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2012.01465.x
更新日期：2014-02-01 00:00:00
