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RISS 인기검색어
- 검색키워드
- 저자 : ( Seyed Fardin Qeysari ) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Estimation of Percentage Body Fat in Iranian Junior Taekwondo Team with an Anthropometrics Index
( Mehdi Shahbazi ),( Seyed Fardin Qeysari ),( Sima Dastamooz ),( Majid Nayeri ) 국제태권도학회 2017 International Symposium for Taekwondo Studies Vol.2017 No.-
Purpose: As obesity during childhood and adolescence increases the incidence of many chronic diseases during adulthood, specifying predictive factors can play an important role in human health. Consequently, this study aimed to estimate the percentage body fat in the Iranian Junior Taekwondo Team with an anthropometric index. Methods: We evaluated the accuracy of skinfold thickness, BMI, waist circumference, waist-to-height ratio (WHtR), and waist-to-hip ratio for the prediction of percentage body fat (PBF) in the Iranian Junior Taekwondo team. Subjects were 695 junior expert Taekwon do players (boys: n = 327, 10.91 ± 1.94 years, 145.09 ± 13.54 cm, 37.24 ± 11.69 kg; girls: n = 368, 11.16 ± 2.34 years, 147.84 ± 12.96 cm, 39.77 ± 12.70 kg). Percent body fat was mea sured by Bioelectrical Impedance Analysis (BIA). Moderator variables such as age, gender, and maturity level were adjusted. The adjusted determination coefficient was calculated for each model. Results: The 6SF index (0.87) and 8SF (0.86) index were similarly accurate at predicting PBF and were better than other indexes. BMI (0.64) was a better predictor. The weakest predictor was WHR (0.23). Conclusions: These results indicate that 6SF or 8SF were better than BMI and waist cir cumference at predicting PBF. This study has important implications for pediatric epide miological studies aimed at disentangling the effect of body fat on health outcomes.
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( Mehdi Shahbazi ),( Seyed Fardin Qeysari ),( Majid Nayeri ),( Hadi Kashani ),( Sima Dastamooz ) 국제태권도학회 2017 International Symposium for Taekwondo Studies Vol.2017 No.-
Purpose: The aim of this study was to examine the relationship between body type compo nents and age of peak growth (high peak speed) in the Iranian Junior Taekwondo national team. The peak height growth rate is an important variable for determining maturation in puberty that like other maturation factors is impacted by physical condition and human body type. Methods: Subjects were 1157 expert junior Taekwondo players (boys: n = 742, 10.59 ± 2 years, 145.09 ± 13.54 cm, 37.18 ± 11.06 kg; girls: n = 381, 11.18 ± 2.36 years, 147.92 ± 13.11 cm, 40.03 ± 13.31 kg). Somatotype data were calculated using Heath-Carter instruction, and PHV was measured using the Mirwald formula. Data was analyzed using Pearson cor relation and multiple regression analyses. Results: Results of the Pearson correlation analysis in boys revealed that PHV had a posi tive correlation with ectomorph and negative correlation with endomorph and mesomorph. Total correlation between PHV and somatotype was 0.09, which explained the 0.081 of PHV variance. Results of the regression analysis showed ectomorph and endomorph were significant predictors (ectomorph more than endomorph) of PHV, but mesomorph was not a significant predictor of PHV in the girls group. Results showed that PHV and PWV had no significant relation with body composition. The regression model was: Y = 12.46-0.06a-0.04m-0.07e. Conclusions: These results indicate that endomorph and ectomorph had a significant role in predicting age of PHV, but mesomorph was not significant.
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