Longitudinal Study on the Variation and Development of Selected Sports Performance in Twins - Case Study for one Pair of Female Monozygous (MZ) and Dizygous (DZ) Twins -
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.14 Vol.14】
The purpose of this study was to evaluate the similarity and differential of the characteristics and selected sport performances (running, throwing and swimming) in monozygous (MZ) and dizygous (DZ) twins. furthermore a significance of the heritability and trainability in determining the individual variation of those parameters by means of longitudinal design.
In this study, each one pair of female MZ and DZ twins employed as subjects measured for 7 to 9 years successively. Comparison of the differences between MZ and DZ twins were made by intrapair difference computed through the following equation : {|A-B|} / {(A+B) / 2} * 100 = Intrapair difference : ID (%)
Anthropometric parameters were little differnces between MZ and DZ twins in the series of the growth and development respectively (ID= 0.1~3.5% for MZ, 1.2~6.5% for DZ). However, girth and weight parameters indicated from 2.4% to 12.9% for MZ, from 0.5% to 21.7% for DZ respectively.
The percentage of ID for PWC 170 and PWC 170 / wt in D 02 increased from 30.6% to 76.6%, from 42.2% to 84.1% at the age from 15 to 16 respectively. This findings may be considered that aerobic power might be relied on not only the genetic factor but also the difference of the usual physical activities. As evaluate the magnitudes of the influence of phylogenetic and ontogenetic types, kinematic variables in running were related with genetic factors based on the discussion of intrapair difference and motor patterns between MZ and DZ twins by longitudinal viewpoint. However, motor patterns and kinematic variables in throwing and swimming performances seemed to be influenced by a total amount of individual activities and experiences, especially by learning and training, Because of the values of performances in swimming could be improved the time as the extra exercise was provided. In addition, overhand throwing patterns for both twins could not be developed without extra training.
DESCENTE SPORTS SCIENCE Vol.14/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
In this study, each one pair of female MZ and DZ twins employed as subjects measured for 7 to 9 years successively. Comparison of the differences between MZ and DZ twins were made by intrapair difference computed through the following equation : {|A-B|} / {(A+B) / 2} * 100 = Intrapair difference : ID (%)
Anthropometric parameters were little differnces between MZ and DZ twins in the series of the growth and development respectively (ID= 0.1~3.5% for MZ, 1.2~6.5% for DZ). However, girth and weight parameters indicated from 2.4% to 12.9% for MZ, from 0.5% to 21.7% for DZ respectively.
The percentage of ID for PWC 170 and PWC 170 / wt in D 02 increased from 30.6% to 76.6%, from 42.2% to 84.1% at the age from 15 to 16 respectively. This findings may be considered that aerobic power might be relied on not only the genetic factor but also the difference of the usual physical activities. As evaluate the magnitudes of the influence of phylogenetic and ontogenetic types, kinematic variables in running were related with genetic factors based on the discussion of intrapair difference and motor patterns between MZ and DZ twins by longitudinal viewpoint. However, motor patterns and kinematic variables in throwing and swimming performances seemed to be influenced by a total amount of individual activities and experiences, especially by learning and training, Because of the values of performances in swimming could be improved the time as the extra exercise was provided. In addition, overhand throwing patterns for both twins could not be developed without extra training.
DESCENTE SPORTS SCIENCE Vol.14/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Toshiaki Goya*1, Yoshihiro Amano*1, Tamotsu Hoshikawa*2, Hideji Matsui*3 |
|---|---|
| University or institution | *1 Aichi University of Education, *2 Aichi University of Education, *3 Insititute of Sports Medicine and Science |
Keywords
sport performances, monozygous, dizygous, heritability, trainability, longitudinal design