ORAL Communicationsvolumen XXV Número 128 2008 Pág
Total Page:16
File Type:pdf, Size:1020Kb
VOLUMEN XXV - N.º 128 - 2008 COMMUNICATIONS ORAL COMMUNICATIONSVolumen XXV Número 128 2008 Pág. 437-512 ORAL COMMUNICATIONS ATHLETE’S CARE-I (2.470.069 vs 2.510.079 ms, p=0.028) of the NP-test. Complex RTs didn’t LANGUAGE: ENGLISH differ between groups. For professionals, a positive correlation was found between simple RT at the beginning of the NP-test and the total number of disputed (r=0.386, p=0.043) A portable device for assessing locomotor and won (r=0.400, p=0.035) bouts. A negative correlation (r=-0.468, p=0.012) performance was found between simple RT at the end of the NP-test and the total number of L’Hermette M1,2, Savatier X2,3, Tourny-Chollet C1,2, Dujardin F2 bouts lost due to head blows. Conclusions: Professional boxers show a longer simple RT in respect to de- 1 2 CETAPS, EA 3832, University of Rouen, Rouen, France. GRHAL, buting amateur boxers, with no difference regarding more complex cognitive University of Rouen, Rouen, France. 3Automatique Industrielle, tasks. A possible explanation may be found in a kind of adaptation of skilled ESIGELEC, Rouen, France boxers to better (and longer) evaluate external stimuli before giving a simple motor response. We investigated the validity of a new portable system and the feasibility of the method for gait analysis as the assessment of gait has clinical relevance in the Key words: Head concussion. Cognitive impairment. Dementia pugilistica. study of locomotor pathologies. This system is composed of a data logger, triaxial accelerometers, and software. Comparison of prevalence symptoms of premens- Measurements of the pelvis kinematics during gait were performed on fi ve hip osteoarthritic subjects and 15 healthy subjects using the portable system and a trual syndrome (PMS) in athletes and non-athletes reference system (ViconTM). The healthy subjects were studied in conditions of female students normal gait and gait altered by a heelpiece. The studied variables were the ver- Moghadasi A1, Abasi Darehbeedi M2, Kargarfard M2 tical amplitude of the sacrum, the time of gait cycle and the vertical trajectories 1 2 of the spines. The new system corresponded with the reference system for the University of Payame Noor, University of Isfahan studied variables. The small differences between the two systems in the vertical Introduction: The purpose of this study was to compare prevalence symptoms amplitude of the sacrum (0.53 ± 6.39 mm), time of the gait cycle (0.002 ± 0.05 of premenstrual syndrome (PMS) in athletes and non-athletes female students of s), and the vertical trajectories of the spine (coeffi cient correlation of 0.06 ± 0.05) the Islamic Azad University of Ilam. confi rmed the validity of the portable system data. The results showed a distor- Method: Sample of this study comprises 100 athletes female (Mean±SD; Age tion of the pelvis trajectory when the gait was impaired. The portable system 23.6±4.1 year, height 162.9± 5.4 cm, weight 60.7± 9.0 kg, previous history provides an objective method to discriminate normal from limping gait and is of sport activity 3.3±2.8 year) and 100 non-athletes female (Mean±SD; Age easy to use outside of the laboratory. 22.3±2.2 year, height 162.2± 5.6 cm, weight 59.4± 8.6 kg) were selected among This system can be used in outpatient settings as it presents a great autonomy female students who had have regular menstrual cycle and didn’t use drug. and simplicity to function. The objective evaluation of the quality of gait may Instrument of research was PMS questionnaire. To analyse the data descriptive improve the capacity to analyze the effects of rehabilitation protocols or training and t-test were utilized. programs. Results: The results of this study showed that female athlete students had Key words: Locomotor performance. Ambulatory system. Triaxial accelero- somatic symptoms signifi cantly lower than non-athletes female students (t= meter. -1.79, P= 0.024). But no signifi cant relation was gained between psychological symptoms of athlete and non-athletes. Also in terms of PMS no signifi cant rela- tion between athlete (21.5±13.1) and non-athletes (27.8±15.9) female students Neuropsychological testing in boxing was reported (t= -2.04, P= 0.091). However, of the total 93.5% (187 n) subjects Bianco M1,2, Fabiano C1, Ferri M1, Scardigno A1, Tavella S3, Caccia A3, had PMS that no signifi cant difference between athletes (91 %) and non athlete Manili U3, Faina M2,3, Zeppilli P1 (96%) students (t= -2.16, P= 0.175) was reported. In athlete students symptoms were lower than non athlete students but this difference was not signifi cant (t= 1Sports Medicine Department, Catholic University, Rome. Italy; -2.01, P= 0.775). 2Medical Commission, Italian Boxing Federation, Rome. Italy; Discussion: According to the results of this research, reduction of somatic 3Sports Medicine and Science Institute, National Italian Olympic symptoms in athlete student in regard to non-athlete student and treatment ways Committee, Rome. Italy. should be effective, free-danger, free-side implication, easy and available. The- refore we suggest that females who have PMS have to do some sport training Introduction: Boxing is a sport where athletes deliberately throw blows and session regularly in a week. receive blows to the head and one way to win a competition is causing a con- Key word: Premenstrual syndrome. Somatic symptoms. Psychological symp- cussion (winning by knockout). Years of boxing practice could impair cognitive toms. Athletes & non-athletes female. functions. Aim of this study was to investigate cognitive functions in boxers. Methods: The study population was composed of male subjects, with no pre- vious history of head concussions (except from boxing): a) 33 boxers at their fi rst Characteristics of anaerobic fatigue and isokinetic medical examination for debuting in amateur boxing, never engaged in compe- knee strength between pre and post winter season titive boxing nor other ring sports before; b) 27 professional boxers, renewing in Korea alpine ski racers their license. Subjects were requested: a) to fulfi ll a questionnaire collecting demographic data, level of education, occupational status, boxing record (for Hye-Jung Choi1, Young-Soo Jin2, Tae-Won Jun1, In-Sub Chung3 professionals) and number of head concussions during boxing practice; b) to 1Department of exercise physiology of Seoul National University; undergo a computerized neuropsychological (NP) test (CogSport). 2 Results: Professionals were signifi cantly (p<0.0001) older (29.4 4.19 years) Department of sports and health medicine center of Asan Medi- 3 and started boxing training at a signifi cantly younger age (14.53.94 vs cal Center; Federation International de ski 20.34.77 years, p<0.0001) than debutants (24.15.13 years). Introduction: The purpose of this study was to compare anaerobic fatigue and Debutants showed a signifi cant shorter simple reaction time (RT) than professio- lower body strength, quadriceps and hamstring between pre-and post winter nals, both at the beginning (2.440.070 vs 2.490.075 ms, p=0.005) and the end season (4month, 13competitions) in Korea Alpine ski racers. 437 A M D ARCHIVOS DE MEDICINA DEL DEPORTE ORAL COMMUNICATIONS Methods: Thirteenth males of Korea alpine ski racers (mean age: 18.8years, We have studied 12 healthy subjects (5 males y 7 females) 18 to 25 years old. mean career:9.48years, mean height:173cm, mean weight: 71.5kg) were exami- The gravity centre projection over a dynamometric platform was recorded both ned. Anaerobic fatigue was tested by Wingate during 90second and knee strength with open and closed eyes during a relaxed and static bipedal position. The test examed extension and fl exion power. There were tested by cybex 770 Isokinetic had duration of 60 seconds with a sampling frequency of 60 Hz, obtaining 3600 dynamometry. The test protocol were 30°/sec, 180°/sec and 240°/sec. points for every record. Results: Each test has peak power and the ratio of quadriceps and hamstring We analyzed the total displacement, the dispersion and displacement of the power. Anaerobic fatigue was signifi cantly increasedafter winter season (p<.05) signal on X and Y axis, the total swept area and the maximal force in every axis. from pre season (63.9) to post season (77.4). In isokinetic power, there was a sig- SampEn was calculated from the original X and Y series. nifi cant difference between pre and post season on both fl exion (p<.05), extension All lineal parameters are higher when they are recorded with closed eyes, (p<.01) at 30°/sec. Extension power was also reduced at after season in 180°/sec although the difference is signifi cant only for the total swept area and the values whereas muscle ratio was not signifi cant. Extension power was signifi cantly redu- related to Y axis. ced (p<.05), and muscle ratio shown a signifi cantly difference (p<.05). SampEn values for X axis are 1.53 ± 0.39 (open eyes) and 1.53 ± 0.53 (closed Conclusions: We found that there are signifi cant differences between pre and eyes). For Y axis they are 1.37 ± 0.42 and 1.06 ± 0.57respectively. post season for anaerobic fatigue and the isokinetic knee function. Furthermore, The gravity centre performance over Y axis is more predictable than over X one, and extensor power was more reduced than fl exion power through different protocols more with closed eyes. The entropy value in X axis indicates that the system maintains (30°/sec, 180°/sec and 240°/sec). These data suggest that the quadriceps muscle a high complexity and that it remains constant even if the eyes are open or closed.