Journal of sports science & medicine (J SPORT SCI MED)

Publisher: Uludağ Üniversitesi. Dept. of Sports Medicine

Journal description

The Journal of Sports Science and Medicine covers all aspects of sports medicine and sciences the management of sports injuries; all clinical aspects of exercise, health, and sport; exercise physiology and biophysical investigation of sports performance; sport biomechanics; sports nutrition; sports psychology; physiotherapy and rehabilitation in sport; and medical and scientific support of the sports coach.

Current impact factor: 0.90

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 0.898
2012 Impact Factor 0.885
2011 Impact Factor 0.754
2010 Impact Factor 0.676
2009 Impact Factor 0.815
2008 Impact Factor 0.564
2007 Impact Factor 0.29
2006 Impact Factor 0.475

Impact factor over time

Impact factor
Year

Additional details

5-year impact 1.32
Cited half-life 5.20
Immediacy index 0.10
Eigenfactor 0.00
Article influence 0.33
Website Journal of Sports Science and Medicine website
Other titles Journal of sports science and medicine, JSSM
ISSN 1303-2968
OCLC 50728108
Material type Periodical, Internet resource
Document type Internet Resource, Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: This study aimed to examine the indirect teaching strategies applied by a coach educator in terms of promoting student-coaches’ engagement in a positive and active learning environment. The participants were an expert coach educator and seven student-coaches from an academic coaching setting. A mix method approach was used to collect data. Whilst video-recording and participant observations were used to collect data from the lessons, focus groups were adopted to recall the perceptions of student-coaches. The results showed that indirect teaching strategies implemented by the coach educator promoted a supportive and challenging learning environment, which, in turn, encouraged student-coaches to be more actively involved in the lessons (i.e., asking questions, showing signs of autonomy by monitoring the pace in which they completed tasks and actively engaging in the search for solutions of the tasks). Additionally, the affective aspects of the relationship established with student-coaches (voice nuances, gestures, face expressions, eye contact, touching and humour) instigated them to feel confident in exposing their doubts and opinions, and in learning in a more autonomous manner. Moreover, the practical lessons proved to be crucial to help student-coaches to reach broader and deeper forms of understanding by allowing application from theory to coaching practice. In conclusion, this study reinforces the value of indirect teaching strategies to stimulate an active learning environment. It also highlights the value of practical learning environments to better prepare neophyte coaches to deal with the complex and dynamic nature of their professional reality. Key words: Coaching, Coach Education, Teaching Approach, Learning
    Journal of sports science & medicine 09/2015;
  • [Show abstract] [Hide abstract]
    ABSTRACT: Marathon runners are ranked in 5-year age groups. However the extent to which 5-year groupings facilitates equitable competition has not been evaluated. The aim of this study was to evaluate the effect of relative age in male and female marathon running. Marathon finishing times for the top ten male (aged 20-69 years) and female athletes (aged 20-64 years) were obtained from the 2013 New York and Chicago marathons. Intra-class and inter-class validity were evaluated by comparing performances within (intra-class) and between (inter-class) the 5-year age groups. Results showed intra-class effects in all male age groups over 50 years, in all female age groups over 40 years, and in male and female 20-24 age groups (p < 0.05). Inter-class differences existed between the 20-24 and 25-29 age groups in both males and females, between all male age groups over 50 years, and between all female age groups over 40 years (p < 0.05). This study provided the first evaluation of the effects of relative age in male and female marathon running. The results provide preliminary but compelling evidence that the relatively older male athletes in age groups over 50 years and the relatively older females in age groups over 40 years are competitively disadvantaged compared to the younger athletes in these age groups.
    Journal of sports science & medicine 09/2015; 14:669-674.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The skeletal muscle in aged rats adapts rapidly following a period of exercise. This adaptation includes structural remodeling and biochemical changes such as an up-regulation of antioxidant enzymes, content of stress and heat shock proteins (HSPs). However, the associated molecular mechanisms mediating different types of exercise training-induced adaptations are not yet completely understood. Therefore, the purpose of this study was to investigate the effects of duration and frequency exercise on the expression of HSPs, antioxidant enzymes, and mitogen-activated protein kinase (MAPKs) in the skeletal muscles of aged rats. Young (3-month-old) and aged (20-month-old) male Sprague-Dawley rats were randomly assigned to 6 groups and extensor digitorum longus (EDL; fast twitch muscle fiber) and soleus (SOL; slow twitch muscle fiber) skeletal muscles were collected immediately. The expression pattern of HSPs in skeletal muscles was decreased in old groups compared with young groups. Especially, HSPs showed lower expression in SOL than EDL muscle. Interestingly, HSPs in aged rats was increased significantly after S1 (single long-duration; 1×30 min, 5 days/week for 6 weeks) and M1 types (multiple short-duration; 3×10 min·day(-1), 5 days·week(-1) for 6 weeks) than S2 (single long-duration; 1×30 min, 3 days/week for 6 weeks) and M2 (multiple short-duration; 3×10 min·day(-1), 3 days·week(-1) for 6 weeks) types of exercise training. Also, superoxide dismutase (SODs) showed similar expression as HSP did. On the contrary, the p-ERK and p-JNK were down regulated. In addition, p-p38 level in the SOL muscle was activated markedly in all exercise groups. These results demonstrate that increasing of HSP expression through duration and frequency exercise can lead to protection and training-induced adaptation against aging-induced structural weakness in skeletal muscles. Key pointsThe expression of heat shock proteins (HSPs) in aged rats was increased significantly after single long-duration (S1) and multiple short-duration (M1) types than S2 and M2 types of exercise training in soleus (SOL) skeletal muscles.Superoxide dismutase (SODs) showed similar expression as HSPs did. On the contrary, the p-ERK and p-JNK were down regulated. In addition, p-p38 level in the SOL muscle was activated markedly in all exercise groups.Induction of HSPs and SODs by high duration and frequency of exercise training such as S1 and M1 types with concomitant MAPKs pathway depending on the type of muscles.The frequency and duration of exercise training could affect the functional adaptation and protection against aging-induced structural weakness of skeletal muscles through changing expression of related molecules.
    Journal of sports science & medicine 06/2015; 14(2):347-53.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Elevated plasma creatine kinase (CK) activity is often used as an indicator of exercise-induced muscle damage. Our aim was to study effects of contraction type, sex and age on CK efflux from isolated skeletal muscles of mice. The soleus muscle (SOL) of adult (7.5-month old) female C57BL/6J mice was subjected to either 100 passive stretches, isometric contractions or eccentric contractions, and muscle CK efflux was assessed after two-hour incubation in vitro. SOL of young (3-month old) male and female mice was studied after 100 eccentric contractions. For adult females, muscle CK efflux was larger (p < 0.05) after eccentric contractions than after incubation without exercise (698 ± 344 vs. 268 ± 184 mU·h(-1), respectively), but smaller (p < 0.05) than for young females after the same type of exercise (1069 ± 341 mU·h(-1)). Eccentric exercise-induced CK efflux was larger in muscles of young males compared to young females (2046 ± 317 vs 1069 ± 341 mU · h(-1), respectively, p < 0.001). Our results show that eccentric contractions induce a significant increase in muscle CK efflux immediately after exercise. Isolated muscle resistance to exercise-induced CK efflux depends on age and sex of mice. Key pointsMuscle lengthening contractions induce the highest CK efflux in vitro compared with similar protocol of isometric contractions or passive stretches.Muscle CK efflux in vitro is applicable in studying changes of sarcolemma permeability/integrity, a proxy of muscle damage, in response to muscle contractile activity.Isolated muscle resistance to exercise-induced CK efflux is greater in female compared to male mice of young age and is further increased in adult female mice.
    Journal of sports science & medicine 06/2015; 14(2):379-85.
  • Journal of sports science & medicine 06/2015; 14(2):473-4.