Suplementação e recuperação de atletas de luta olímpica

J Int Soc Sports Nutr. 2011 Nov 22;8(1):21. [Epub ahead of print]


Effects of carbohydrate, branched-chain amino acids, and arginine in recovery period on the subsequent performance in wrestlers.

Jang TR, Wu CL, Chang CM, Hung W, Fang SH, Chang CK.

Abstract

ABSTRACT: Many athletes need to participate in multiple events in a single day. The efficient post-exercise glycogen recovery may be critical for the performance in subsequent exercise. This study examined whether post-exercise carbohydrate supplementation could restore the performance in the subsequent simulated wrestling match. The effect of branched-chain amino acids and arginine on glucose disposal and performance was also investigated. Nine well-trained male wrestlers participated in 3 trials in a random order. Each trial contained 3 matches with a 1-hr rest between match 1 and 2, and a 2-hr rest between match 2 and 3. Each match contained 3 exercise periods interspersed with 1-min rests. The subjects alternated 10-s all-out sprints and 20-s rests in each exercise period. At the end of match 2, 3 different supplementations were consumed: 1.2 g/kg glucose (CHO trial), 1 g/kg glucose + 0.1 g/kg Arg + 0.1 g/kg BCAA (CHO+AA trial), or water (placebo trial). The peak and average power in the 3 matches was similar in the 3 trials. After the supplementation, CHO and CHO+AA trial showed significantly higher glucose and insulin, and lower glycerol and non-esterified fatty acid concentrations than the placebo trial. There was no significant difference in these biochemical parameters between the CHO and CHO+AA trials. Supplementation of carbohydrate with or without BCAA and arginine during the post-match period had no effect on the performance in the following simulated match in wrestlers. In addition, BCAA and arginine did not provide additional insulinemic effect.

Taekwondo, organização sensorial e equilíbrio em crianças com problemas coordenativos

Res Dev Disabil. 2012 Jan;33(1):85-95. Epub 2011 Oct 4.


Taekwondo training improves sensory organization and balance control in children with developmental coordination disorder: A randomized controlled trial.

Fong SS, Tsang WW, Ng GY.

SourceDepartment of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong.



Abstract

Children with developmental coordination disorder (DCD) have poorer postural control and are more susceptible to falls and injuries than their healthy counterparts. Sports training may improve sensory organization and balance ability in this population. This study aimed to evaluate the effects of three months of Taekwondo (TKD) training on the sensory organization and standing balance of children with DCD. It is a randomized controlled trial. Forty-four children with DCD (mean age: 7.6±1.3 years) and 18 typically developing children (mean age: 7.2±1.0 years) participated in the study. Twenty-one children with DCD were randomly selected to undergo daily TKD training for three months (1h per day). Twenty-three children with DCD and 18 typically developing children received no training as controls. Sensory organization and standing balance were evaluated using a sensory organization test (SOT) and unilateral stance test (UST), respectively. Repeated measures MANCOVA showed a significant group by time interaction effect. Post hoc analysis demonstrated that improvements in the vestibular ratio (p=0.003) and UST sway velocity (p=0.007) were significantly greater in the DCD-TKD group than in the DCD-control group. There was no significant difference in the average vestibular ratio or UST sway velocity between the DCD-TKD and normal-control group after three months of TKD training (p>0.05). No change was found in the somatosensory ratio after TKD training (p>0.05). Significant improvements in visual ratios, vestibular ratios, SOT composite scores and UST sway velocities were also observed in the DCD-TKD group after training (p≤0.01). Three months of daily TKD training can improve sensory organization and standing balance for children with DCD. Clinicians can suggest TKD as a therapeutic leisure activity for this population.

Edição do Strength and Conditioning Journal é dedicada às modalidades esportivas de combate

Dica do Fabrício:
http://journals.lww.com/nsca-scj/pages/currenttoc.aspx

A Bianca pode encontrar explicação para sua mudança de modalidade em um dos artigos hahahahaha

Antropometria e capacidade física de atletas juvenis de judô

BODY BUILD AND BODY COMPOSITION VS. PHYSICAL CAPACITY IN YOUNG JUDO CONTESTANTS COMPARED TO UNTRAINED SUBJECTS


AUTHORS: Sterkowicz S.1, Lech G.1, Pałka T.2, Tyka A.2, Sterkowicz-Przybycień K.L.3, Szyguła Z.2, Kłys A.1

1Department of Theory and Methodology of Combat Sports, University School of Physical Education, Krakow, Poland

2Institute of Human Physiology, University School of Physical Education, Krakow, Poland

3Department of Theory and Methodology of Gymnastics, University School of Physical Education, Krakow, Poland

ABSTRACT: The aim of the present study was to (1) find differences in body build and aerobic and anaerobic capacity between young judoists and untrained peers; (2) compare correlations for indicators of body build with indicators of aerobic and anaerobic capacity among the group of trained and untrained subjects. The study group comprised 18 subjects selected during a competitive period, who had taken at least fifth place in national judo tournaments. Their training experience ranged from 6 to 11 years, 8 to 10 hours a week. The control group was composed of 18 untrained students from one of the schools included in the study. Their body height and mass (BM) did not differ compared to judoists. A body composition chart was employed for analysis of body build and body composition. Physiological investigations encompassed measurements of anaerobic (Wingate test) and aerobic (graded exercise test on cycle ergometer) capacity. Judo contestants are typically characterized by higher BMI, fat-free mass and fat-free mass index compared to the untrained. Compared to the group of untrained peers, young athletes in this sport are distinguished by the time needed to generate peak power. This difference is not observed in the indices characterising aerobic capacity. The level of the indices of body build and composition in young judo contestants shows a moderate and strong correlation with indices of anaerobic and aerobic capacity. The amount of total work in the Wingate test was positively correlated with BMI (r=0.65, p<0.01), fat-free mass index (r=0.63, p<0.01), body mass (r=0.49, p<0.05), fat mass index (r=0.49, p<0.05) and percentage of fat (r=0.48, p<0.05). Maximal peak anaerobic power was positively correlated with fat-free mass index (r=0.48, p<0.05) and percentage of fat (r=0.50, p<0.05). A strong negative correlation between ·VO2max with body mass (r=-0.75, p<0.001), BMI (r=-0.72, p<0.001), moderate correlation with PF% (r=-0.64, p<0.01), fat-free mass index (r=-0.52, p<0.05), and fat mass index (-0.67, p<0.01) were observed. Heart rate at the anaerobic threshold (%HRmax) showed positive relationships with fat-free mass index (r=0.52, p<0.05). In the untrained subjects, only a negative relationship between BM and TOPP was observed (r=-0.48, p<0.05). These findings confirm interrelations between structural and functional parameters, developed through many years of training. Although physical capacity might affect the course of a fight, it should be considered in coaching practice only in conjunction with the level of technical and tactical preparation, which determines the result of the fight.
http://biolsport.com/fulltxt.php?ICID=965486

Acontece menos do que seria esperado?

J Strength Cond Res. 2011 Nov 10. [Epub ahead of print]

Exertional Rhabdomyolysis in an Adolescent Athlete During Preseason Conditioning: A Perfect Storm.
Cleary MA, Sadowski KA, Lee SY, Miller GL, Nichols AW.
1Department of Kinesiology and Rehabilitation Science, Human Performance Research Laboratory, University of Hawaii at Manoa, Honolulu, Hawaii; 2Department of Athletics, Bonner Physical Therapy/Sandpoint High School, Sandpoint, Idaho; 3Department of Athletics, Hawaii Baptist Academy, Honolulu, Hawaii; 4Department of Athletics, Castle High School, Kaneohe, Hawaii; and 5Division of Sports Medicine, Family Medicine and Community Health, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii.


Abstract
Cleary, MA, Sadowski, KA, Lee, SY-C, Miller, GL, and Nichols, AW. Exertional rhabdomyolysis in an adolescent athlete during preseason conditioning: a perfect storm. J Strength Cond Res 25(X): 000-000, 2011-The purpose of this brief review is to present a case of a healthy, male adolescent athlete (age = 16 years, body mass = 67.9 kg, height = 165.5 cm) who participated in a 3-day preseason wrestling camp which resulted in hospitalization for exertional rhabdomyolysis. As part of the preseason conditioning program directed by the coaches, the athlete completed 60 minutes of short, intense intervals of wall-sits, squats, sit-ups, push-ups, lunges, and plyometric jumps. The following day, the athlete continued his vigorous training consisting of running drills. That night he noticed voiding dark brown urine the color of cola. The day after the camp ended, the athlete reported to his Athletic Trainers with the chief complaint of severe bilateral leg pain in his quadriceps. Two days after the initial assessment, he was admitted to the hospital where he was diagnosed with exertional rhabdomyolysis based on creatine kinase (CK) levels that peaked at 146,000 IU·L, elevated far beyond normal (normal range = 58-280 IU·L). The athlete was hospitalized for 6 days where he received intravenous normal saline for rehydration, and his CK levels were assessed daily. Athletic Trainers, personal trainers, physical education teachers, and coaches should be aware that exertional rhabdomyolysis is the most common form of rhabdomyolysis and affects individuals who participate in novel and intense exercise to which they are unaccustomed. Stressful ambient conditions may lead to dehydration and exacerbation of the condition, particularly when the individual is not accustomed to the exercise intensity.

Intervenção quiroprática e força de preensão manual em judocas

J Manipulative Physiol Ther. 2011 Nov 10. [Epub ahead of print]


Effect of Cervical Spine Manipulative Therapy on Judo Athletes' Grip Strength.

Botelho MB, Andrade BB.

Chiropractor, Private Practice, Salvador, BA/Brazil.

Abstract
OBJECTIVE: The objective of this study was to perform an investigation evaluating if cervical spinal manipulative therapy (SMT) can increase grip strength on judo athletes in a top 10 national-ranked team.
METHODS: A single-blinded, prospective, comparative, pilot, randomized, clinical trial was performed with 18 athletes of both sexes from a judo team currently competing on a national level. The athletes were randomly assigned to 2 groups: chiropractic SMT and sham. Three interventions were performed on each of the athletes at different time points. Force measurements were obtained by a hydraulic dynamometer immediately before and after each intervention at the same period before training up to 3 weeks with at least 36 hours between interventions.
RESULTS: Analysis of grip strength data revealed a statistically significant increase in strength within the treatment group after the first intervention (6.95% right, 12.61% left) as compared with the second (11.53% right, 17.02% left) and the third interventions (10.53% right, 16.81% left). No statistically significant differences were found in grip strength comparison within the sham group. Overall differences in strength were consistently significant between the study groups (P = .0025).
CONCLUSION: The present study suggests that the grip strength of national level judo athletes receiving chiropractic SMT improved compared to those receiving sham.

5 anos de USP: novo recorde pessoal em um mesmo emprego : )