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1.
Int. j. morphol ; 38(4): 1148-1154, Aug. 2020. tab
Article in English | LILACS | ID: biblio-1124908

ABSTRACT

The aim of this study is to investigate rs1805086 and rs1805065 polymorphisms of MSTN gene of national and amateur Turkish arm wrestlers and people leading a sedentary lifestyle, and the anthropometric properties such as hand, wrist, and forearm circumferences of national and amateur Turkish arm wrestlers are aimed to be explored. In this study, a total of 79 volunteers who were 24 national (7 females, 17 males) Turkish arm wrestlers, 21 amateur (7 females, 14 males) Turkish arm wrestlers and 34 sedentary people (12 females, 22 males) participated. To analyse the data, Statistical Package for the Social Sciences, SPSS 22 (SPSS Inc., Chicago, IL, USA) was used. As a result of the study, when data on rs1805086 and rs1805065 polymorphisms of MSTN gene were examined respectively, it was found out that MSTN 153KK genotype was 100.0% dominant in both national (n=24) and amateur (n=21) arm wrestlers, and it was 94.12 % dominant in sedentary people. KR genotype was observed in 5.88 % of the sedentary people. The data from the other rs1805065 polymorphism of MSTN gene showed that all participants (n = 45, 100.0 %) were carriers of normal homozygous genotype. Furthermore, for both female group and male group, there found to be statistically significant difference in terms of anthropometric properties. It can be concluded that though there was no significant difference between national and amateur Turkish arm wrestlers in terms of their MSTN gene characteristics; in terms of anthropometric properties, significant differences were discovered. It was found out that on these athletes, not MSTN gene polymorphisms but anthropometric properties were effective.


El objetivo de este estudio fue investigar los polimorfismos rs1805086 y rs1805065 del gen MSTN de luchadores de brazos turcos, nacionales y aficionados, y personas que llevan un estilo de vida sedentario, y las propiedades antropométricas además de las circunferencias de manos, muñecas y antebrazos de los luchadores de brazos turcos nacionales y aficionados. En este estudio, participaron un total de 79 voluntarios: 24 luchadores de brazos turcos nacionales (7 mujeres, 17 hombres), 21 luchadores de brazos turcos aficionados (7 mujeres, 14 hombres) y 34 personas sedentarias (12 mujeres, 22 hombres). Para analizar los datos, se utilizó el Paquete Estadístico para las Ciencias Sociales, SPSS 22 (SPSS Inc., Chicago, IL, EE. UU.). Como resultado del estudio, cuando se examinaron los datos sobre los polimorfismos rs1805086 y rs1805065 del gen MSTN respectivamente, se descubrió que el genotipo MSTN 153KK era 100,0 % dominante en luchadores de brazos nacionales (n = 24) y aficionados (n = 21) , y era 94,12 % dominante en personas sedentarias. El genotipo KR se observó en el 5,88 % de las personas sedentarias. Los datos del otro polimorfismo rs1805065 del gen MSTN mostraron que todos los participantes (n = 45; 100,0 %) eran portadores del genotipo homocigoto normal. Además, tanto para el grupo femenino como para el masculino, se encontró una diferencia estadísticamente significativa en términos de propiedades antropométricas. Se puede concluir que, aunque no hubo una diferencia significativa entre los luchadores de brazos turcos nacionales y aficionados en términos de sus características genéticas MSTN; en términos de propiedades antropométricas, se descubrieron diferencias significativas. Se descubrió que, en estos atletas, no fueron los polimorfismos del gen MSTN sino las propiedades antropométricas las efectivas.


Subject(s)
Humans , Male , Female , Arm/anatomy & histology , Polymorphism, Genetic , Wrestling , Myostatin/genetics , Athletes , Turkey , Wrist/anatomy & histology , Anthropometry , Athletic Performance/physiology , Forearm/anatomy & histology , Genotype , Hand/anatomy & histology
2.
Int. j. morphol ; 31(3): 832-838, set. 2013. ilus
Article in English | LILACS | ID: lil-694964

ABSTRACT

The purpose of this study was to investigate the predictors contributing to be in the first three places with right and left arm in armwrestling. Seventy-three male senior armwrestlers competed in Turkish National Championship voluntarily participated in this study. Some participants competed with both arms. Two samples were composed of according to the participant competition category, for right (69 participants) and left arm (65 participants). The data were collected from eight different weight classes. Handgrip strength, auditory reaction time, forearm length, and forearm circumference were determined as the predictors. All the measurements were taken after weigh-ins had been done and before the first day of national championship competition. Logistic regression analysis was conducted to predict whether a competitor in armwrestling would be in the first three places either with right or left arm, to be a winner or non-winner. Relative handgrip strength was found a significant predictor for both right and left arm ranking (p < 0.05). Auditory reaction time was found a significant predictor only for right arm ranking (p < 0.05) and forearm circumference was found a significant predictor only for left arm ranking (p < 0.05). These results suggest that strength can be viewed as the main predictor in left arm ranking; however, auditory reaction time is also an important factor to be in the first three places in right arm ranking. Thus, competitors should also focus to improve this perceptual skill.


El objetivo de este estudio fue investigar los predictores que contribuyen a clasificar en los tres primeros lugares en la lucha de fuerza de brazos (vencidas o pulsadas) con el brazo derecho e izquierdo. Setenta y tres hombres luchadores senior compitieron en el Campeonato Nacional de Turquía y participaron voluntariamente en este estudio. Algunos participantes compitieron con ambos brazos. Dos muestras fueron conformadas de acuerdo con la categoría de competencia del participante, para el brazo derecho (69 participantes) y el brazo izquierdo (65 participantes). Los datos se obtuvieron para 8 categorías de peso. La fuerza de prensión, tiempo de reacción auditiva, largo del brazo y circunferencia del antebrazo se determinaron como predictores. Todas las medidas fueron tomadas después de pesaje clasificatorio y antes del primer día de competición. Un análisis de regresión logística se realizó para predecir si un competidor en lucha de fuerza estaría en los tres primeros lugares ya sea con el brazo derecho o izquierdo, para ser un ganador o no ganador. La fuerza de prensión relativa resultó un predictor significativo para la clasificación tanto en el brazo derecho e izquierdo (p <0,05). El tiempo de reacción auditiva se encontró un predictor significativo sólo para la clasificación del brazo derecho (p <0,05) y la circunferencia del antebrazo un predictor significativo sólo para el brazo izquierdo (p <0,05). Estos resultados sugieren que la fuerza puede ser vista como el principal predictor en la clasificación para el brazo izquierdo, sin embargo, el tiempo de reacción auditiva es también un factor importante para estar en los tres primeros lugares de la clasificación para el brazo derecho. Por lo tanto, los competidores también deben centrarse en mejorar esta habilidad perceptual.


Subject(s)
Humans , Male , Adult , Forearm/anatomy & histology , Forearm/physiology , Hand Strength , Anthropometry , Functional Laterality , Muscle Strength , Wrestling
3.
Journal of the Korean Academy of Family Medicine ; : 498-506, 2000.
Article in Korean | WPRIM | ID: wpr-125014

ABSTRACT

BACKGROUND: Several studies have reported that muscle strength and bone mineral density have a significant positive correlation and most previous literature on muscle strength and bone mineral density examined their association. To evaluate the association between grip strength and radius bone mineral density, more precise PQCT was used rather than SPA or DEXA. METHODS: The study was performed from June to August 1999 in Pundang community with 154 postmenopausal women who undertaken osteoporosis screening program who participated in this study. Bone mineral density was measured at the radius using PQCT (peripheral quantitive computed tomograpy). Grip and pinch strength were measured in both the dominant and nondominant hands using a dyanometer. Other data were obtained from the questionnaire. RESULTS: Grip and pinch strength of the dominant hands were significantly higher than the nondominant hands. There was no significant difference in bone mineral density by exercise and fracture history. Age-adjusted partial correlation analysis indicated a significant positive correlation of radius BMD with dominant hands grip strength. Significant positive correlations also were found between radius BMD and pinch strength. CONCLUSION: Subjects with stronger grip strength had a low BMD. There was a significant positive correlationship between bone mineral density and dominant hand grip strength. especially with the more positive association of cortical BMD with forearm circumference. The data suggest that grip strength is a weak predictor of radius bone mineral density and provide a feasible way of predicting it.


Subject(s)
Female , Humans , Bone Density , Forearm , Hand , Hand Strength , Mass Screening , Muscle Strength , Osteoporosis , Pinch Strength , Radius , Surveys and Questionnaires
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