quarta-feira, 30 de julho de 2014

Perda de peso e estados psicológicos associados em atletas de judô de alto rendimento.

 2014 Jul 14. [Epub ahead of print]

Weight Loss and Psychological-Related States in High-Level Judo Athletes.

Abstract

PURPOSE:

This study aimed at comparing weight loss methods [WLM] performed near competition by elite judo athletes from different age and gender groups, and relating WLM with the prevalence of eating disorders.

METHODS:

144 athletes (66 females and 78 males) from the Spanish judo teams participated in this observational descriptive study grouped into Cadets, Juniors and Seniors. Data were collected during previous training meetings to international tournaments. The used tools are a basic data questionnaire, State-Trait Anxiety Inventory [STAI-T], Food Craving Questionnaire-Trait [FCQ-T], Restraint Scale [RS], and Eating Attitude Test [EAT-40]. Two-way ANOVAs and Chi-Square tests were used to compare groups.

RESULTS:

Seniors presented higher use of WLM, especially one week before competition compared to Juniors. Judoists were more involved in their diets and reduced more weight as they were older. Females were more concerned about their diets, presented higher anxiety, scored higher in the emotion scale, and more eating disorders symptomatology, although weight loss was lower. Anxiety and eating disorders symptomatology differences were more common in Juniors and Cadets, respectively, with higher scores in females.

CONCLUSIONS AND IMPLICATIONS:

Seniors seem to develop more effective strategies to cope with weight loss. Cadet and Junior females are more likely to suffer from the psychological-related states associated to weight loss. Implications: (1) Educational programs might help competitors and coaches to adopt and promote healthier weight loss processes, (2) special attention should be paid to female young judoists to detect eating disorders in its early stages, and (3) Judo organizations should consider implementing new rules to sanction harmful weight loss practices.

terça-feira, 8 de julho de 2014

Influência do nível de prática de karate e do sexo sobre respostas fisiológicas e perceptivas em três tipos de treinamento do karate

THE INFLUENCE OF KARATE PRACTICE LEVEL AND SEX ON PHYSIOLOGICAL AND PERCEPTUAL RESPONSES IN THREE MODERN KARATE TRAINING MODALITIES
Montassar TabbenHelmi Chaabane, Emerson Franchini, Claire Tourny, Karim Chamari, Jeremy B Coquart
Biol Sport 2014; 31(3):201-207

http://biolsport.com/fulltxt.php?ICID=1111438

terça-feira, 1 de julho de 2014

Respostas psicológicas, fisiológicas, de desempenho e perceptivas a combates de BJJ

Kinesiology, Vol.46 No.1 June 2014.

Original scientific paper
PSYCHOLOGICAL, PHYSIOLOGICAL, PERFORMANCE AND PERCEPTIVE RESPONSES TO BRAZILIAN JIU-JITSU COMBATS
Leonardo Vidal Andreato ; Martial Arts and Combat Sports Research Group, Sport Department, School of Physical Education and Sport, University of São Paulo, Brazil 
Solange Marta Franzói de Moraes ; Exercise Physiology Laboratory, Human Physiology Department, University State of Maringá, Brazil
João Victor Del Conti Esteves ; Exercise Physiology Laboratory, Human Physiology Department, University State of Maringá, Brazil
Mário Luiz Miranda ; Martial Arts and Combat Sports Research Group, Sport Department, School of Physical Education and Sport, University of São Paulo, Brazil
Juliana Jacques Pastório ; Exercise Physiology Laboratory, Human Physiology Department, University State of Maringá, Brazil
Eloá Jacques Pastório ; Exercise Physiology Laboratory, Human Physiology Department, University State of Maringá, Brazil
Braulio Henrique Magnani Branco ; Exercise Physiology Laboratory, Human Physiology Department, University State of Maringá, Brazil
Emerson Franchini ; Martial Arts and Combat Sports Research Group, Sport Department, School of Physical Education and Sport, University of São Paulo, Brazil 
Abstracts
This study aimed to investigate the psychological, physiological, performance and perceptive responses to a regional level Brazilian jiu-jitsu competition. The study included 12 Brazilian jiu-jitsu athletes graded blue belt. The psychological responses were measured by the Profile of Mood States – POMS and Sport Competition Anxiety Test – SCAT. Glucose, β-hydroxybutyrate and lactate were determined from blood samples collected at rest and immediately after the fights at the earlobe. Saliva samples were also collected at rest and immediately after the fights to determine cortisol and immunoglobulin A (IgA). Maximal isometric grip strength was tested using a handgrip dynamometer, before and after the fights. Rating of perceived exertion was also assessed after the fights using the 6-20 Borg scale. The athletes were asked to indicate on an anatomical diagram of the anterior and posterior views of the body, the areas they perceived to have experienced most exertion during fights. Before the competition the athletes presented an iceberg profile of mood state and medium competitive anxiety. As a result of the fights, glucose, lactate, cortisol and IgA increased significantly. However, β-hydroxybutyrate level remained constant after the fights. Physical exertion during the match resulted in significant reductions only in the dominant handgrip strength. In addition, the athletes rated the fight as hard and very hard and indicated the forearm, wrist and frontal thigh as the principal points of fatigue. The results indicated that Brazilian jiu-jitsu fights exert a moderate demand on the glycolytic pathway, and caused significant reductions in handgrip strength.
Keywords
combat sports; rating of perceived exertion; energy demands