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Perfomance and sport

E Bibbo Rosset, C Mélot, M Szpalski, T S Keller, F Balagué
In this study, we investigate the relationship between either regular sports practice or a non sportive way of life, development of trunk muscle performance and occurrence of lower back pain between male schoolchildren. 93 schoolchildren were recruited, then stratified in 4 groups, according to sport practice or sedentary way of life. Participants were evaluated twice at an interval of 2 years with an interview, a physical examination and an evaluation of trunk muscle performance. We identified that basketball players have significantly better results and perfomance concerning isometric and isoinertial tests of trunk muscles than the other groups...
July 17, 2013: Revue Médicale Suisse
Joaquin Pérez-Guisado
It is also necessary to emphasize that as well as the weight loss, ketogenic diets are healthier because they promote a non-atherogenic lipid profile, lower blood pressure and diminish resistance to insulin with an improvement in blood levels of glucose and insulin. Such diets also have antineoplastic benefits, do not alter renal or liver functions, do not produce metabolic acidosis by Ketosis, have many neurological benefits in central nervous system, do not produce osteoporosis and could increase the perfomance in aerobic sports...
December 2008: Archivos Latinoamericanos de Nutrición
Rodolfo Demo, Daniel Senestrari, Julio E Ferreyra
ANTECEDENTS: With the same intensity of sub-maximum effort, the concentration of serum (LS) or muscular lactate is higher in Hypoxia conditions, or exercise at an altitude without acclimation, in relation with normoxia or at sea level (MSL). The highest level of lactate after fatigue or in a test of strict anaerobic condition, would not be modified when altitude changes without previous acclimation. OBJECTIVE: To abtain local data about the magnitude of the affect in SL of a effective altitude at 1,700 meters without acclimation, as a parameter of aerobic performance of young soccer players of our environment who live and train at sea level...
2007: Revista de la Facultad de Ciencias Médicas
Monèm Jemni, William A Sands, Françoise Friemel, Michael H Stone, Carlton B Cooke
Aerobic and anaerobic performance of the upper body (UB) and lower body (LB) were assessed by arm cranking and treadmill tests respectively in a comparison of national (N) and international (I) male gymnasts. Force velocity and Wingate tests were performed using cycle ergometers for both arms and legs. In spite of a significant difference in training volume (4- 12 vs. 27-34 h.wk(-1) for N and I, respectively), there was no significant difference between N and I in aerobic and anaerobic performance. Upper body and LB maximal oxygen uptake (VO(2)max) values were 34...
November 2006: Journal of Strength and Conditioning Research
Grant L Iverson, Michael Gaetz, Mark R Lovell, Michael W Collins
PRIMARY OBJECTIVE: To examine the possibility that athletes with multiple concussions show cumulative effects of injury. METHODS AND PROCEDURES: Amateur athletes with a history of three or more concussions were carefully matched (gender, age, education and sport) with athletes with no prior concussions. All completed a computerized neuropsychological test battery at preseason (ImPACT) and then within 5 days of sustaining a concussion (mean = 1.7 days). MAIN OUTCOMES AND RESULTS: There were differences between groups in symptom reporting and memory performance...
May 2004: Brain Injury: [BI]
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