Avaliação da composição corporal em atletas de judô

J Sports Sci. 2012 Jun 14. [Epub ahead of print]

Is bioelectrical impedance spectroscopy accurate in estimating changes in fat-free mass in judoathletes?

Matias CN, Santos DA, Fields DA, Sardinha LB, Silva AM.

Source

a Exercise and Health Laboratory, Faculty of Human Kinetics, Technical University of Lisbon , Cruz-Quebrada , Portugal.

Abstract

Abstract Bioelectrical impedance spectroscopy (BIS) provides an affordable and practical assessment of fat-free mass (FFM). However, little information is available on the assessment of changes in fat-free mass in top-level athletes using BIS. The aim of this study was to examine the accuracy of BIS in tracking changes in fat-free mass of elite male judo athletes from a period of weight stability to just before competition, using the four-compartment model (4C model) as reference method. In total, 27 elite male judo athletes (age 22.2 ± 2.8 years) were evaluated. Measures of body volume assessed by air displacement plethysmography, bone mineral content by dual-energy X-ray absorptiometry, and total-body water assessed with deuterium dilution were used in a 4C model. Fat-free mass was also assessed by BIS (FFM(BIS)). Changes in FFM(BIS) were not significantly different from measured by the reference method (P = 0.000). Furthermore, the r (2) was 0.62 and the standard error of the estimate was 1.03 kg. The limits of agreement ranged from -3.36 to 2.59 kg with no bias observed. These findings demonstrate the viability of BIS as a valid tool for tracking fat-free mass in elite male judo athletes. However, based on the wide limits of agreement observed, BIS is less valid at an individual level for tracking fat-free mass in these athletes.

Resumo de artigo sobre avaliação psicológica e fisiológica de atletas de TKD

Int J Sports Physiol Perform. 2012 Jun 13. [Epub ahead of print]

Physiological vs Psychological Evaluation in Taekwondo Elite Athletes.

Casolino E, Cortis C, Lupo C, Chiodo S, Minganti C, Capranica L.

Source

Department of Human Movement and Sport Sciences, University of Rome "Foro Italico", Rome, Italy.

Abstract

PURPOSE:

To anticipate outstanding athletic outcomes the selection process of elite athletes simultaneously considers psycho-physiological and technical parameters. This study aimed to investigate whether Selected and Not Selected athletes for the Italian National taekwondo team could be discriminated by means of sport-specific performances, and psycho-physiological responses to training.

METHODS:

Five established Italian National athletes and 20 elite Italian taekwondo black belt athletes (9 females, 16 males; age: 23.0±3.1yrs; body mass: 67.0±12.1kg) participated in this study. To update the Italian National team roster, the 20 elite athletes participated in a 1-week selection camp (7 training sessions). Selected athletes (n=10) joined Established National athletes during the following 3-week National training period (7 training sessions.week-1). During the 1-week selection camp, differences (p<0.05) between Selected and Not Selected athletes in performances, heart rate responses, blood lactate accumulation [La], subjective ratings of perceived exertion (session-RPE), and mood were examined. During the 3-week national training period, differences (p<0.05) in mood between Selected and Established National athletes were investigated.

RESULTS:

With respect to Not Selected athletes, Selected athletes responded better to training in terms of session-RPE (p=0.047), and [La] (p = 0.046). No difference in performance and mood between subgroups emerged. After the 3-week National training period, differences (p=0.035) emerged for confusion, with decreases in the Established National athletes and increases for recently Selected athletes.

CONCLUSIONS:

Session-RPE and [La] seem to be more effective in discriminating between elite taekwondo athletes than psychological measures. Evaluation of mood could be effective in monitoring the athlete's response to National training.

Artigo a ser publicado envolvendo uchi-komi intermitente em alta intensidade

Depois de um ano para ser rejeitado em outra revista, sairá em outra com FI maior. E depois dizem que uma das premissas da ciência é a lógida : )

Notem que as unidades saíram sem o -1. Acho que apagaram na edição final hahahaha

Tb tenho uma dúvida: no lattes, coloco em aceito como indica o CNPq ou faço como meus nobres colegas que colocam em publicado sempre com a mesma paginação (p.1-9)?


J Strength Cond Res. 2012 Jun 11. [Epub ahead of print]


Physiological and Performance Responses to Intermittent Uchi-komi in Judo.

Franchini E, Panissa VL, Julio UF.

1Department of Sport, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil Laboratory (s) where the research was conducted: Laboratory of Energetic Determinants of Sport Performance - School of Physical Education and Sport, University of São Paulo, São Paulo.



Abstract

ABSTRACT: The objective of the present study was to compare the physiological and performance responses to different judo techniques and time structure uchi-komi (technique entrance) protocols. Ten judo athletes (25±6 years old, 73±9 kg, 173±5 cm, and 15±6 years of judo experience) were submitted to nine all-out uchi-komi sessions. Three techniques (o-uchi-gari, seoi-nage, and harai-goshi) and three different time structures (18x10s/10s, 9x20s/20s, and 6x30s/30s) were randomly assigned. Two-way and three-way ANOVA with repeated measurements and the Bonferroni test were used. The significance level was fixed at 5%. There was no effect of the time structure or the technique on the absolute energy expenditure (P > 0.05), which can be attributed to the all-out characteristic of the exercise. However, more repetitions were executed during the o-uchi-gari protocol (F = 19; P < 0.001; η = 0.32) compared to harai-goshi and seoi-nage (P < 0.001 for both comparisons). Oxygen consumption differed over time during the activity (F = 767; P < 0.001; η = 0.904), with lower values during the 1 min (32.51 ± 3.21 mL.kg.min) compared to the 2 (41.47 ± 4.20 mL.kg.min) and 3 minutes (42.96 ± 4.29 mL.kg.min), and lower values were recorded in the 2 min compared to the 3 min (P < 0.001 for all comparisons). There was also an effect of technique on the total energy expenditure per repetition (F = 6; P = 0.001; η = 0.128), with o-uchi-gari resulting in lower values compared to seoi-nage (P = 0.003), as the former technique does not involve torso rotation and knee flexion, while the latter technique does. These training protocols resulted in similar oxygen uptake and heart rate responses compared to match simulations, and they can be used to simulate the match demand.


http://www.ncbi.nlm.nih.gov/pubmed/22692119

Torneio de MMA para crianças...

http://oglobo.globo.com/blogs/lafora/posts/2011/09/22/vale-tudo-infantil-ingles-sera-investigado-pelas-razoes-erradas-407066.asp#.T9jAnvPYTBY.facebook

Próxima sexta-feira

http://www.eefe.usp.br/?calendario_evento/mostrar/id/514/dia/15/mes/6/ano/2012

Em breve na Archives of Budo

http://www.archbudo.com/abstracted.php?level=5&icid=883023

Direto de Genova

Aquisição do dia, após palestra por aqui. Textos sobre o lutar, pelos lutadores, transcrito e adaptado por autor com nome do meu pai : )




Odeio la guerra

Detesto gli eserciti

Amo combattere

Sul muro di una palestra a Vedano al Lambro