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  1. Fulltext Martial arts injuries
    Pieter W
    Med Sport Sci, 2005;48:59-73.
    PMID: 16247253 DOI: 10.1159/000084283
    OBJECTIVE: To review the current evidence for the epidemiology of pediatric injuries in martial arts.

    DATA SOURCES: The relevant literature was searched using SPORT DISCUS (keywords: martial arts injuries, judo injuries, karate injuries, and taekwondo injuries and ProQuest (keywords: martial arts, taekwondo, karate, and judo), as well as hand searches of the reference lists.

    MAIN RESULTS: In general, the absolute number of injuries in girls is lower than in boys. However, when expressed relative to exposure, the injury rates of girls are higher. Injuries by body region reflect the specific techniques and rules of the martial art. The upper extremities tend to get injured more often in judo, the head and face in karate and the lower extremities in taekwondo. Activities engaged in at the time of injury included performing a kick or being thrown in judo, while punching in karate, and performing a roundhouse kick in taekwondo. Injury type tends to be martial art specific with sprains reported in judo and taekwondo and epistaxis in karate. Injury risk factors in martial arts include age, body weight and exposure.

    CONCLUSIONS: Preventive measures should focus on education of coaches, referees, athletes, and tournament directors. Although descriptive research should continue, analytical studies are urgently needed.

  2. Mood and performance in young malaysian karateka
    Wong RS, Thung JS, Pieter W
    J Sports Sci Med, 2006;5(CSSI):54-9.
    PMID: 24357977
    In an attempt to test the conceptual model by Lane and Terry, the purposes of this study were 1) to assess mood states in non-depressed and depressed young karate athletes; 2) to assess mood states in relation to performance in young karate athletes. The participants were recruited from the 2004 Malaysian Games (72 males, 19.20 ± 1.16 years; 37 females, 18.78 ± 0.88 years). The athletes were divided into winners (medalists) and losers. The Brunel Mood Scale (BRUMS) was administered prior to the start of competition. MANOVA was employed to treat the data, while Pearson correlations were calculated for mood states in each depressed mood group and by gender. In terms of non-depressed and depressed mood, tension in the females was higher in the depressed group (5.61 ± 3.02 vs. 3.11 ± 1.90, p = 0.026, eta(2) = 0.133), as was fatigue (3.64 ± 2.61 vs. 0.89 ± 1.69, p = 0.006, eta(2) = 0.199). Tension in the males was higher in the depressed group (4.41 ± 2.52 vs. 1.50 ± 1.55, p < 0.001, eta(2) = 0.215), as was anger (1.43 ± 1.88 vs. 0.25 ± 1.00, p = 0.019, eta(2) = 0.076). The highest associations among mood subscales were between anger and depression (r = 0.57), and between depression and fatigue ( r = 0.55) in depressed males. The female winning karateka scored higher on anger (3.08 ± 2.96 vs. 1.29 ± 2.24, p = 0.046, eta(2) = 0.109). The highest correlations between mood dimensions in depressed females were between depression and anger (r = 0.85) and between depression and confusion (r = 0.85). Contrary to previous research on the influence of depression on anger, only the female winners scored higher on anger. Several negative mood dimensions were higher in both male and female depressed groups, lending some support to the conceptual model advanced by Lane and Terry. Key PointsTo date, there is no information about the relationship between mood and martial arts performance in Malaysian athletes.There might be cultural differences in the way Malaysian athletes respond to psychological questionnaires.The mood-performance and depressed mood-non-depressed mood relationships might be mediated by age.
  3. Relative total body fat and skinfold patterning in filipino national combat sport athletes
    Pieter W, Bercades LT, Kim GD
    J Sports Sci Med, 2006;5(CSSI):35-41.
    PMID: 24357974
    The purpose of this study was to assess relative total body fat and skinfold patterning in Filipino national karate and pencak silat athletes. Participants were members of the Philippine men's and women's national teams in karate (12 males, 5 females) and pencak silat (17 males and 5 females). In addition to age, the following anthropometric measurements were taken: height, body mass, triceps, subscapular, supraspinale, umbilical, anterior thigh and medial calf skinfolds. Relative total body fat was expressed as sum of six skinfolds. Sum of skinfolds and each individual skinfold were also expressed relative to Phantom height. A two-way (Sport*Gender) ANOVA was used to determine the differences between men and women in total body fat and skinfold patterning. A Bonferroni-adjusted alpha was employed for all analyses. The women had a higher proportional sum of skinfols (80.19 ± 25.31 mm vs. 51.77 ± 21.13 mm, p = 0. 001, eta(2) = 0.275). The men had a lower proportional triceps skinfolds (-1.72 ± 0.71 versus - 0.35 ± 0.75, p < 0.001). Collapsed over gender, the karate athletes (-2.18 ± 0.66) had a lower proportional anterior thigh skinfold than their pencak silat colleagues (-1.71 ± 0.74, p = 0.001). Differences in competition requirements between sports may account for some of the disparity in anthropometric measurements. Key PointsThe purpose of the present investigation was to assess relative total body fat and skinfold patterning in Filipino national karate and pencak silat athletes.The results seem to suggest that there was no difference between combat sports in fatness.Skinfold patterning was more in line with what was reported in the literature with the males recording lower extremity fat.
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