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Judo Development https://judodevelopment.se Fri, 19 Mar 2021 09:22:06 +0000 en-GB hourly 1 https://wordpress.org/?v=5.7.2 https://judodevelopment.se/wp-content/uploads/2021/01/cropped-Namnlos-design-9-1-32x32.png Judo Development https://judodevelopment.se 32 32 188787256 Three Methods of Kata https://judodevelopment.se/three-methods-of-kata/ Fri, 19 Mar 2021 09:14:36 +0000 https://judodevelopment.se/?p=579 Kano’s idea of kata where a way to show, educate, explain and understand the basic principles of a technique, and then use this understanding and develop it through randori. Then…

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Kano’s idea of kata where a way to show, educate, explain and understand the basic principles of a technique, and then use this understanding and develop it through randori. Then kata is a basic education method for teaching and breaking down the techniques, but not an advanced metod to learn judo. Because then he said randori is the only way to property learn the principle of maximum efficiency and minimum effort, seiryoku zenyo.

The traditional kata is a fixed form for education a specific topic in the field of judo, you can create your own traditional kata with fixed movements and techniques, but it would always be a fixed form therefore is the traditional kata not developable, and the transfer of knowledge is limited to higher forms of katas like situational and creative, but also for randori.

The next form of kata, is the situational kata this method of learning kata is a way for athletes to learn patterns of predefined movements where the athletes can train on the fundamental movements of their family of techniques. This could be part of development of a technical strategy that later can be used in special situations in randori.

The last method is creative kata, where the athletes extend their ‘family of techniques’ with other reactions to their first technique this leads to a continuously movement form situations to situations but when every situation is based on the scenario-based learning model specific for judo.

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New Book – Pedagogical Metods for Judo https://judodevelopment.se/new-book-pedagogical-metods-for-judo/ Sat, 20 Feb 2021 11:52:57 +0000 https://judodevelopment.se/?p=563 Buy the book at blurb se link here… the book is available as traidbook and ebook. More inforamtion about the book you find below, or in these postsUchi komi –…

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Buy the book at blurb se link here…
the book is available as traidbook and ebook.

More inforamtion about the book you find below, or in these posts
Uchi komi – https://judodevelopment.se/uchi-komi/
Kakari – geiko – https://judodevelopment.se/kakari-geiko/

A preview of the first 15 pages is available here…

Pedagogical Methods for Judo: offers you as a judo trainer the essential from both theoretical learning theories, to more practical guidance for training methods.

In the book you will also find teoriers about motor skill development, what’s the difference between motor skills, coordination and techniques, but also how technical development is divided and the importance of an individual’s special technique.

Then some more practical knowledge about how we can teach, and how we can modify the pedagogic for different types of knowledge levels for our athletes.

In the end two models on how progression in judo can be developed, and how different judo training methods are connected to each other.

At last every training method is further described and explained for how we as trainers can modify the methods to be as adopted to the purpose of our trainings.

This is therefore a book that is based on theory but explaining the theory, and how it is practical and how it’s relative to judo training methods.

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Kakari-geiko https://judodevelopment.se/kakari-geiko/ Fri, 05 Feb 2021 19:40:25 +0000 https://judodevelopment.se/?p=550 Kakari-geiko is a lighter form of sparring with a specific theme. Tori can either have an offensive or a defensive role, and the Uke can either have an offensive or…

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Kakari-geiko is a lighter form of sparring with a specific theme. Tori can either have an offensive or a defensive role, and the Uke can either have an offensive or defensive role,  uke can choose to use movement, blocking or technique to defend against Tori’s attacks.   

This exercise is used to create an understanding of different tactics and strategies, so even if both Uke and Tori is defensive they can’t quit attacking, because in a competition they would be penalized for passivity. For defensive judo it would rather be to work more with gripping, movement or other forms of defensive judo. Here you as a trainer still can play with the parameters used in yaku-soku-geiko, but you also need to take the parameters from the figure in count. 

Figure: A simple model showing the main parameters that can be modified or manipulated during Kakari-geiko, the parameters from yaku-soku-geiko (figure 3)  are also important to take in count. 

Summarize of different modifications

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Uchi-komi https://judodevelopment.se/uchi-komi/ Tue, 02 Feb 2021 11:10:59 +0000 https://judodevelopment.se/?p=481 What is Uchi-komi? What is uchi-komi and which parameters can you as a coach change or manipulate to make the most out of it? Uchi-komi means “make contact”, and it…

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What is Uchi-komi?

What is uchi-komi and which parameters can you as a coach change or manipulate to make the most out of it?

Uchi-komi means “make contact”, and it could be done either with a rubber band, a partner, two partners with a sprint between or with several partners.  In this exercise the tori tries to make the movement repeated, like stepping into a judo throw,  as a projection without throwing the opponent.  Through this exercise the placement of the body is trained, but also good timing in the technique, this due to making the body learn to adjust to the proper balance of the technique.  

The uchi-komi can then be further modified in thechniqual parts, movements, resistance and repetitions other than different choice of partner, see the model explaining parameters that can be modified or manipulated for uchi-komi.

A simple model showing parameters that can be modified or manipulated during uchi-komi.

Different modifications in Uchi-komi

The technical parts can be modified by how the stepping is conducted, is tori stepping in towards uke or stepping out away from uke. Is tori laying on the stomach or back and then standing up and conducting the technique. How does tori pull: up, forward, or down, how is the distance between uke and tori from the beginning is it tight or are there plenty of space, how is the gripp in the beginning: no gripp, standard gripp, 2 to 1 gripp etc.

Uchi-komi can also be teached in different movements like standing still, forward, backward, to the sides left/right, circular movement left/right or dynamic movement (all directions).

The exercise can also be adjusted in how many repetitions that are made after each other for example: every other time, 5 repetitions, 10 repetitions and so on can be modified to suit the training. 

Uchi komi can also be taught while uke is easy where the technique is easy to make, but the uke can also resist to make it much harder to make the technique more like the conditions of competition. It’s good as a coach to also adjust the resistance of uke, because different conditions can be good for different types of practices. 

Summarize of different modifications

Partner

  • Rubber band
  • Partner
  • Two partners
  • More Partners

Technique

  • Stepping:  in/ out/ standing up from stomach/ standing up from back.
  • Pull: upp, forward, or down.
  • Distance: tight to far away
  • Gripp: no grip, standard grip, 2 to 1 grip.

Movement

  • Standing still
  • Forward
  • Backward
  • To the sides Left/right
  • Circular Left/right
  • Dynamic movement (all directions)

Resistance

  • Easy to full resistance,
  • Adaptable resistance,
  • Change in resistance,
  • Extra partner in ukes belt for more resistance.

Repetitions

  • 1 to 100 or more
  • Adjust the amount depending on what the goal of the training is.

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Active Start – U7 https://judodevelopment.se/active-start-u7/ Thu, 28 Jan 2021 13:41:04 +0000 https://judodevelopment.se/?p=460 Framework 1-2 training/-s each week, with a duration at 45-60 minutes each training. 50 % of the training will be general development training 45 % of the training will be…

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Framework
  • 1-2 training/-s each week, with a duration at 45-60 minutes each training.
    • 50 % of the training will be general development training
    • 45 % of the training will be sport specific skill training
      • 60-70 % of this will be with focus on Ukemi and Ne-waza.
      • 30-40 % of this will focus on tachi-waza. 
    • 5 % of the training will be sport specific performance training
      •   Such as modified randori: Ne-waza only, and in the club only. 
  • Focus on basic movement skills and patterns, locomotion (walking, running, jumping, swimming), climbing, throwing, catching, kicking. 
  • Include both hand-eye and foot-eye, hand-foot coordination activities.
  • Progress from gtound to standing, easy to difficult and simple to complex. 
  • Activities should be designed to ensure success and develop self-esteem and a desire to participate.
  • Activities should be tasks and participation focused, this to build their self motivation, but also focusing on social interactions for the children.
  • Activities shall not focus on performance and results in this stage. 
  • Activities can be competitive if its focus is on tasks performed in groups, and different groups. Here emphasis needs to be on participation and to do the task together in a group, not on performance!
  • The training shall be all-round and varies between sessions, where the children shall not know whats coming next, and where focus also is to develop all physical abilities!
  • It’s a training and it’s not a ‘free play’ for children where nothing is planned.  The training needs to be well prepared, with a written and well thought out season plan with an specified session plan, where the plan will emphasize on development of the necessary abilities in this age group.
  • The training shall be playful and where activities shall be fun, therefore the form of training in this stage is well thought out games that develops the necessary abilities in this age group. 
  • The aim of all the training is to gain a long term development for the children, and give them the right abilities and the right conditions for development to become athletes. This is the goal of all trainers, we ain’t ‘play leaders’ or ‘babysitters’, so this is the mission as a trainer nothing less!
  • The highest grade in this age group is half white half yellow belt, 6th+ kyu.

General objectives

  • Develop general awareness of the body and general fitness. 
  • Develop fundamental movement skills (running, jumping, throwing, swimming etc.)
  • Develop a broad knowledge of movement patterns and skills. 
    • Basic movement patterns: static and dynamic balance, displacement of the body, jump, hand-eye, foot-eye and hand-foot coordination, rotation, climbing, transport a thing or a person, etc. 
    • Basic movement skills:  stand two and on one leg, stand on two and one leg then close your eyes, jump on two and one leg, then with closed eyes, go on a straight line, indian jumps, crawl (stomach, back and side), crawl on your knees, crawl on all four, throw and catch something, etc.   
  • Introduce agility, balance, coordination and speed training.
    • Coordination, agility and balance to be accomplished through general exercises and a variety of judo-related games. 
    • Short duration of speed/agility can be incorporated in games or by relays. 
  • Short duration of aerobic efforts – allow for a spontaneous application of effort by the child – no structured time frames for exercises. 
  • Develop suppleness (flexibility)
    • Flexibilities exercises can also be incorporated  in games that also emphasize coordination and agility. 
  • Develop smart games where the children is challenge in different ways and with different abilities
    • Obstacle course, relays, follow the leader, simon says, tag games etc. 
    • Build different shapes with the body, create games with stories, like an obstacle course – a hunt for the emerald city in the deep jungle. 
    • Challenge the children in different elements: in the air (jump, skips) on the ground (crawl, walk, run, rotate) in water (dip, plash, dive, float) on snow and ice (crawl, walk, pulse, glide and skate).

Judo- specific objectives 

Basic Ukemi-waza

  • First learn to roll in all directions.
  • Start on the ground and build up, from easy to difficult, simple to complicated. 
  • Modified ushiro-ukemi, yoko-ukemi, mae-ukemi, mae-mawari-ukemi.

Ne-waza

  • Learn to move on the ground in all directions (crawl, shrimp, roll etc.)
  • Rotate from stomach to back, and change between legs.
  • Basic pinning techniques, and keep control on uke, how to get to it from a turn-over, and how to escape from it.
    • Examples on recommended techniques (The kuzure techniques – without grip around the neck):
      These techniques can often be incorporated in games or different parts of the techniques could.
    • Kuzure kesa gatame,
    • Mune gatame,
    • Kuzure yoko shiho gatame,
    • Kuzure tate shiho gatame,
    • Kami shiho gatame.

Tachi-waza

  • Basic judo positions and how to stand and to move in them.
  • Lay the foundation for adequate balance.
  • Coordinate basic movements without a partner and with a partner.
  • Build the  physical fitness foundation that is needed for learning the basic judo throwing techniques, and the movability to throw them in all directions.
  • Introduce the relation between uke and tori.
  • Examples on recommended techniques with modifications. 
    All techniques start from the ground and then progress from there to standing position, uke does control and decide when to fall and perform a controlled ukemi.
    These techniques can often be incorporated in games or different parts of the techniques could.
    • Osoto otoshi (with modifications in standing its a more gentle throw compared to Osoto gari in the beginning)
    • Hiza guruma 
    • O goshi two variantes;
      • 1st: is like uke goshi with rotation ‘no-lift’ (in comparison O goshi teaches the kid to step around fully compared to uki goshi).
      • 2nd: is first with a static lift for 5 seconds then maybe extended, the lift is to learn balance with a partner on their back, then throw in ultrarapid to learn to lower a partner from the back and to keep control and balance.  
    • Ouchi gari
    • Deashi haria
    • Kouchi gari
    • Kosoto gari
    • Ippon seoi nage
    • Uchi mata 

Guiding principles 

  • Body proportions are very different from adults.
  • Judo-specific skills must be adopted to accommodate these differences. 
  • An essential stage needed for maximal athletic development in later stages.
  • Enhances overall feeling of well-being, confidence and self-esteem.
  • Lays the foundation for development of a strong, healthy body, improved fitness and proper weight control.
  • Older students may be joined at this stage.
  • Need for 30-60 minutes each day of organized activity, dependent on age.
  • Opportunities for unstructured “play” time involving physical activity – up to 60 minutes each day. 

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The Physical Fitness in High Level Judo Athlets https://judodevelopment.se/the-physical-fitness-of-high-level-judo-athlets/ Mon, 25 Jan 2021 13:46:36 +0000 https://www.themehorse.com/preview/mags/?p=63 Cardiorespiratory demands Sbriccoli with associates conducted a study on the Olympic Judo team of Italy competing at the 2004 Olympic Games in Athen. They did test the VO2max for the…

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Cardiorespiratory demands

Sbriccoli with associates conducted a study on the Olympic Judo team of Italy competing at the 2004 Olympic Games in Athen. They did test the VO2max for the athletes both in absolute and relative values. The absolute values ranged between 4.2 – 6.8 l/min, and the relative values ranged between 37.3 and 61.8 ml/kg/min. The relative values of VO2max in this study had a lower minimum value compared with the values reported in the other studies.

In the study by Julio and colleagues from 2017, they could observe that the V̇O2 uptake under matches during effort and pause periods where ranging between 30-40 ml/kg/min for the athletes, where the highest values were observed at the 4 minutes, and the lowest values at the last minute of the match.

Sbriccolis’ team did report heart rate ranged between 177-194 beats/min at the VO2max test and the mean value for all subjects corresponded with 97.5 % of the maximal heart rate.  They could also see that the ventilatory threshold (VT) occurred at 80.8 % of the VO2max  and the heart rate at ventilatory threshold (HRVT) did correspond with 84,2 % of the maximal heart rate. Julio and his team fund an increase in heart rate from 160 beats/minute in the beginning of the judo match to 190 beat/minute at the end of the match, and lactate concentration in the blood at 2 mmol/l in the beginning and 6 mmol/l at the end of the match. 

Sbriccoli with colleagues concluded that the judo athletes showed low to moderate aerobic power capacity with values higher than untrained population, but lower than values for endurance athletes.

Strength demands

In 2005 Franchini and his colleagues did see that maximal strength and muscle power are two factors that can distinguish elite judo athletes and non-elite judo athletes . In another study from 2006 by Kubo and his team observed that Olympic and Asian games athletes had a more developed brachialis muscle, and that it did differ between performance levels. The thickness of the elbow flexor muscle was also significantly larger for the Olympic and Asian game athletes compared to the university athletes.

Barbado and associates in 2016 did compare differences in core strength, -endurance and -stability, between national and international judo athletes. Their results show that the athletes at international level had; a significantly higher trunk extensor strength and better responses after fast trunk loading in anterior direction, compared with the athletes on national level. They also found that the core muscle endurance and stability is important for competing in judo, but doesn’t seem to be the limiting factor between competitors on national and international level. 

In the study by Franchini & Takito from 2014 where they compared strength between non-medalist and medalists from the Olympic Games. In the study 66.3 % of all the athletes that had competed for Brazil at the Olympic Games between 1964 and 2008 participated. The scientist found out that there was no significant difference between strength for performance at this level. 

References

Barbado D, Lopez-Valenciano A, Juan-Recio C, Montero-Carretero C, van Dieën JH, et al. (2016) Correction: Trunk Stability, Trunk Strength and Sport Performance Level in Judo. PLOS ONE. 11(9): e0162962.

Franchini E, Boscolo Del Vecchio F, Matsushigue K.A, Artioli, G.G, (2011) Physiological Profiles of Elite Judo Athletes, Sports Med; 41 (2): 147-166. 

Franchini, E & Takito, M.Y, (2014) Olympic preparation in Brazilian judo athletes: Description and perceived relevance of training practices. J Strength Cond Res. 28(6): 1606–1612.

Franchini E, Takito M.Y och Bertuzzi R.C.M, (2005) Morphological, physiological and technical variables in high-level college judoists, Archives of Budo, 1: 1-7. 

Julio U.F,  Panissa J.L.G, Esteves J.V, Cury R.L, Agostinho M.F, & Franchini E, (2017) Energy-System Contributions to Simulated Judo Matches. International Journal of Sports Physiology and Performance, 12, 676 -683.

Kubo, J., T. Chishaki, N. Nakamura, T. Muramatsu, Y. Yamamoto, M. Ito, H. Saitou, and T. Kukidome (2006) Differences in the fat-free mass and muscle thicknesses at various sites according to performance level among judo athletes. J. Strength Cond. Res. 20(3): 654–657. 

Sbriccoli, P., I. Bazzucchi, A. Di Mario, G. Marzattinocci, and F. Felici. (2007) Assessment of maximal cardiorespiratory performance and muscle power in the Italian Olympic judoka. J. Strength Cond. Res. 21(3): 738–744.

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The energetic demands under matches for high level judo athlets https://judodevelopment.se/the-energetic-demands-under-matches-for-high-level-judo-athlets/ Fri, 22 Jan 2021 12:53:23 +0000 https://www.themehorse.com/preview/mags/?p=103 In judo the anaerobic system contributes in short ‘all-out’ performances under the match and both the aerobic effect and capacity is important, because they can help the athletes sustain a…

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In judo the anaerobic system contributes in short ‘all-out’ performances under the match and both the aerobic effect and capacity is important, because they can help the athletes sustain a higher intensity under the whole match, but also delay the accumulation of metabolites connected with the fatigue process.

In a study from Julio and colegues from 2017 could show the difference in energy contribution under simulated judomatches. Under these matches the oxidative energy system contributed with 70 % of the total energy under the whole match, while the glycolytic system contributed with 8 % of the total energy, and the ATP-PCr system contributed with 21 % of the energy.

The usage of the ATP-PCr energy system had a higer contrubution compared with the glycolytic system for the first 3 minutes of the match. Under the whole match the oxidative energy system then increased from 50% to 81 % of the total energy, while the ATP-PCr decresed from 40 to 12 % and and the glycolytic system was maintained between 6 and 10 %.

Under the judomatches the athletes had a higher usage of V̇O2 under the match in the resting periods rather then under the effort periods. This could be a resulult of the energy supply from ATP-PCr is limited, and the accumulation of metabolites due to the activiation of glycolytic metabolism can’t recover under the short resting periods. The increase of the oxidative energetic system could then be a response to the lack of restoring the other two systems in the short resting periods

As mentiond before in 1995 the sicentist Gariod with colegues did find with both video analysis and physiological testing that there are two types of judo fighter,  the endurance fighters and the explosive fighters. Their findings from video analysis showed that the explosive fighters were more eager to win at the beginning of the match and the endurance fighter winning rather at the end of the match. The physiological findings then showed that the endurance fighter had 15,7 % higher VO2max, took half the time (~50 seconds) to recover PCr than the explosive fighters, and could work 30,9 % longer before reaching fifty percent power loss. On the other hand the explosive fighter could perform 11 % higher values for relative peak power at wingate test.  This result could then reflect on the type of tactics the both fighters would use during fights where the explosive fighter will rely on a quick, precise and explosive technique and not be so dynamic in the fight. On the other hand the endurance fighter will be more dynamic and have a higher frequency of techniques.

The study from Franchini and associates from 2011 shows that there were good correlation between peak power 66 % and mean power 68 % at upper body wingate test and the amount of matches won at high level competitions, there is also a strong correlation between performance in two repeated Wingate test 76 % and the number of attacks performed under simulated judo matches. This could be due to the physical demand that judo puts on the upper body, especially on the anaerobic energetic system. 

References

Castarlenas J.L, och Sole J.O. (1997) El entrenamiento de la resistencia en los deportes lucha con agarre: una propuesta integradora. Educ Fís Deportes, 47: 81-86.

 Franchini E, Boscolo Del Vecchio F, Matsushigue K.A, Artioli, G.G, (2011) Physiological Profiles of Elite Judo Athletes, Sports Med; 41 (2): 147-166. 

Franchini E, Takito Y.M, Nakamura F.Y, Matsushigue K.A, och Kiss M.A.P.D.M (2003) Effects of recovery type after a judo combat on blood lactate removal and on performance in an intermittent anaerobic task. J Sports Med Phys Fitness, 43(4): 424-431.

Gariod L, Favre-Juvin A, Novel V, Reutenauer H, Majean H, och Rossi A. (1995) Evaluation du profit énergetique des judokas par spectroscopie RMN du P31. Sci. Sports 10: 201–207.

Julio U.F,  Panissa J.L.G, Esteves J.V, Cury R.L, Agostinho M.F, & Franchini E, (2017) Energy-System Contributions to Simulated Judo Matches. International Journal of Sports Physiology and Performance, 12, 676 -683.

 

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3.6 % increasment in match time, has led to more standing fights and more golden score. https://judodevelopment.se/3-6-increasment-in-match-time-has-led-to-more-standing-fights-and-more-golden-score/ Thu, 21 Jan 2021 14:45:15 +0000 https://www.themehorse.com/preview/mags/?p=53 A ‘normal’ judo match on international level did last for about 3 minutes before 2013. Between 2013 and 2017 did the total match time increase with 3.6 %. This occurred…

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A ‘normal’ judo match on international level did last for about 3 minutes before 2013. Between 2013 and 2017 did the total match time increase with 3.6 %. This occurred even if the match time was changed from 5 to 4 minutes in total in the rules, and was a direct result of changes in the rules. The scientist also saw a change where more of the matches led to golden score.

Judo is an intermittent sport because of the rules that determine the minimum pacing in the match, therefore judo athletes on international level performs 32 intervals in each match (mean value), where 25 is in high-intensity and 8 is low-intensity. The high-intensity intervals last for 20-30 seconds and the low-intensity intervals last for 5-10 seconds. The judo athletes in general perform 7-14 intervals in standing fight and 3-9 intervals in groundwork each match. But the amount is largely dependent on the match time and the rules of judo. At each competition the athletes then need to fight 5 to 7 matches before winning a medal.

Newer results have shown a shift in time in the intervals where more time is spent in the high-intensity intervals, and less time in the low-intensity intervals during matches on international level. At the same time the time spent in standing fight has also increased, compared to time in groundwork. This could be due to changes in judo that strives for a more dynamic and active sport and may have led to changes in tactics under the matches.

Under the high-intensity intervals 58 % of the time is spent on ‘establishing a grip’, and after that the athlete needs to create a throwing attempt. There is a significant relationship between frequency in the number of attempts to throw in a match, this could even be identified at the Olympic games where medalist does 9 ± 6 throwing attempts/match and the non-medalist does 6 ± 4 throwing attempts/match. Then pacing becomes a crucial factor for performance in judo, therefore the physical demands on the athlete in each match is high, especially on the upper body.

References

Castarlenas J.L, och Planas A. (1997) Estudio de la estrutura temporal delcombate de judo. Educ Fís Deportes, 47: 32-39.

Franchini E, Bertuzzi R.C.M, Takito M.Y, och Kiss M.A.P.D.M. (2009) Effects of recovery type after a judo match on blood lactate and performance in specific and non-specific judo tasks. Eur J Appl Physiol, 107(4): 377-383.

Franchini E, Nunes A.V, Moraes J.M, och Boscolo Del Vecchio F. (2007) Physical Fitness and Anthropometrical Profile of the Brazilian Male Judo Team, J Physiol Anthropol, 26(2): 59–67.

Franchini, E., Sterkowicz, S., Meira, C.M., Gomes, F.R., & Tani, G. (2008). Technical variation in a sample of high level judo players. Perceptual and Motor Skills, 106, 859– 869.

Franchini E, Takito M.Y och Bertuzzi R.C.M, (2005) Morphological, physiological and technical variables in high-level college judoists, Archives of Budo, 1: 1-7. 

Franchini E, Takito Y.M, Nakamura F.Y, Matsushigue K.A, och Kiss M.A.P.D.M (2003) Effects of recovery type after a judo combat on blood lactate removal and on performance in an intermittent anaerobic task. J Sports Med Phys Fitness, 43(4): 424-431.

Julio U.F,  Panissa J.L.G, Esteves J.V, Cury R.L, Agostinho M.F, & Franchini E, (2017) Energy-System Contributions to Simulated Judo Matches. International Journal of Sports Physiology and Performance, 12, 676 -683.

Miarka B, Gonçalves Panissa. V.L, Ferreira Julio U, Del Vecchio F.B, Calmet M och Franchini E. (2012) A comparison of time-motion performance between age groups in judo matches, Journal of Sports Sciences, 30(9): 899–905. 

Miarka B, Del Vecchio F.B, Julianetti R, Cury R, Camey S, och Franchini E (2016) Timemotion and tactical analysis of Olympic judo fighters, International Journal of Performance Analysis in Sport; 16: 133-142

Monteiro L, Gonçalves J, Chambel L och Abel M. (2019) Evolution of the temporal structure of world high competition judo combat (2013 a 2017) Revista de Artes Marciales Asiáticas, 14(2s), 15-17

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4 Weeks β-Alanin Suplementation Enhance Perfomance in Highly trained Judo athletes https://judodevelopment.se/4-weeks-%ce%b2-alanin-suplementation-enhance-perfomance-in-highly-trained-judo-athletes/ Wed, 20 Jan 2021 18:43:13 +0000 https://judodevelopment.se/?p=374 A study from Brazil conducted by Caroline de Andrade Kratz with colleagues in 2017. Did investigate the effects of 4 weeks beta-alanine supplementation, with a protocol specifically designed for the…

Inlägget 4 Weeks β-Alanin Suplementation Enhance Perfomance in Highly trained Judo athletes dök först upp på Judo Development.

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A study from Brazil conducted by Caroline de Andrade Kratz with colleagues in 2017. Did investigate the effects of 4 weeks beta-alanine supplementation, with a protocol specifically designed for the metabolic demands of judo.

The study was done on highly trained male judo athletes (training volume 20 h/week) that was randomly assigned beta-alanine or placebo supplement. The study was a randomised, double-blind, placebo-controlled, parallel-group trial.

The group that was assigned Beta-alanin took 6,4 g/day of beta-alanine during a 4 week period.  The dosages were divided into four intake per day, along with the main meals. The athlets did take 2 capsules  each containing  800mg of beta-alanine. The group that had placebo did take capsules of dextrose the same amount as the beta-alanine and identical in number each day, size and appearance.

The assessment of performance before and after the supplementation was conducted by 5 minutes of simulated judo match (randori), then followed by 3 bouts of Special Judo Fitness Test (SJFT). Blood was collected for determination of the pH-value, the concentration of bicarbonate (HCO3- ) and the concentration of lactate. 

The result showed a significant increase in total throws performance at all bouts for the Special Judo Fitness Test, but also a significant increase for the total number of throws conducted in total for the 3 bouts. The athletes taking the beta-alanine supplementation did increase performance in the Special Judo Fitness Test by 8.9 ± 4.7 %, compared with the placebo group where none of the athletes improved significantly. No significance were observed from the blood analysis before and after supplementation between groups. Only an increase of the concentration in blood lactate for the beta-alanin group after supplementation, maybe due to higher performance after supplementation. 

Conclusion from the study was that 4 weeks of beta-alanine supplementation was improving judo performance effectively in highly trained judo athletes. 

Reference 

Caroline de Andrade Kratz,Vitor de Salles Painelli,Kleiner Márcio de Andrade Nemezio,Rafael Pires da Silva,Emerson Franchini,Alessandro Moura Zagatto,Bruno Gualano,Guilherme Giannini Artioli (2017) Beta-alanine supplementation enhances judo-related performance in highly-trained athletes. Journal of Science and Medicine in Sport, 20(4): 403-408.

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The Only Relevant Test for Performance in Judo https://judodevelopment.se/the-only-relevant-test-for-performance-in-judo/ Mon, 18 Jan 2021 15:40:47 +0000 https://www.themehorse.com/preview/mags/?p=89 Standardization, Protocol and Assessment Introduction Aerobic power (VO2max) and aerobic capacity (lactate threshold) are important for high performance in judo. That makes the athlete perform on a high intensity over…

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Standardization, Protocol and Assessment

Introduction

Aerobic power (VO2max) and aerobic capacity (lactate threshold) are important for high performance in judo. That makes the athlete perform on a high intensity over longer periods of time under the match. Due to this the accumulation of metabolites associated with the fatigue process will be delayed, and this makes the athlete recover faster between matches.

Keep Reading!

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