PURPOSE To examine the intra-rater reliability of knee movement data in sagital plane obtained from electrogoniometer (EGM) in a basic, sport-specific task of karate. METHODS A total of 23 elite karate athletes (13 females and 10 males; mean age of 16.10±1.26 yrs) participated in this study. The task was defined as performing three consecutive Zenkutsu-dachi in two sessions. The used EGM was ...

SIR, In the previous issue of the Iranian Journal of Kidney Diseases (volume 3, number 2, page 86), Afshar and colleagues reported their experience of urinary excretion of sodium and potassium in karate practitioners, following competitions.1 The authors concluded that karate may have no influence on urinary excretion of electrolytes. This conclusion was attributed to the short duration and ana...

A karate az egyik legnépszerűbb harcművészet a világon, ám ennek ellenére nincs évszázadokra visszatekintő, részletesen dokumentált történelmi múltja. Az addig főleg titokban gyakorolt okinawai publikus oktatását XX. század első felében kezdték meg kor elismert mesterei, megfelelően pedig írott források, szakirodalmi munkák megjelenése szintén erre időszakra tehető. Ennek legkorábbi forrásdokum...

This review considers the book Anko Itosu. The Man. Master. Myth. Biography of a Legend, published in 2021 by Thomas Feldmann. volume is thorough biographical study Itosu (1831–1915), Okinawan born and essential figure to interpret initial developments karate history during 20th century. Approximately two decades before this indigenous martial art was be popularized mainland Japan Funakoshi Gic...

Emir Salih Magden1*, Purnawirman1, Nanxi Li1, Gurpreet Singh1, Jonathan D. B. Bradley1, Gale S. Petrich1, Gerald Leake2, Douglas D. Coolbaugh2, Michael R. Watts1, Leslie A. Kolodziejski1 Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA College of Nanoscale Science and Engineering, University at Albany, 1400 Washington Ave...