BACKGROUND: The aim of this study was to investigate the association between ACTN3 genotype (RR, RX, and XX) and physical performance of 138 adult, professional, U-20 and U-17 years Brazilian first-division soccer players. METHODS: The following three parameters were investigated: first, speed, using a 30-meter sprint test with speed measured at 10 meters, 20 meters, and 30 meters; second, muscular strength, using counter-movement-jump and squat jump tests; and third, aerobic endurance using the Yo-Yo endurance test. The athletes were ranked in ascending order according to their performance in each test. After which they were divided into quartiles and clustered according to genotype and allele frequency. The χ2 was used to compare the genotype frequencies (RR, RX and RR) and allele frequencies (R and X) within and between the different quartiles of performance rating. RESULTS: No significant differences were observed in genotypic or allelic frequencies between different performance ratings. The ACTN3 genotype was not associated to any of the physical performance parameters. CONCLUSIONS: Our study provides no ervidence for an assocviation between alpha-actinin-3 R577x genotypes and differences in physical performance in adult, professional, U-20 and U-17 years Brazilian first-division soccer players.
BACKGROUND: The aim of this study was to investigate the association between ACTN3 genotype (RR, RX, and XX) and physical performance of 138 adult, professional, U-20 and U-17 years Brazilian first-division soccer players. METHODS: The following three parameters were investigated: first, speed, using a 30-meter sprint test with speed measured at 10 meters, 20 meters, and 30 meters; second, muscular strength, using counter-movement-jump and squat jump tests; and third, aerobic endurance using the Yo-Yo endurance test. The athletes were ranked in ascending order according to their performance in each test. After which they were divided into quartiles and clustered according to genotype and allele frequency. The χ2 was used to compare the genotype frequencies (RR, RX and RR) and allele frequencies (R and X) within and between the different quartiles of performance rating. RESULTS: No significant differences were observed in genotypic or allelic frequencies between different performance ratings. The ACTN3 genotype was not associated to any of the physical performance parameters. CONCLUSIONS: Our study provides no ervidence for an assocviation between alpha-actinin-3 R577x genotypes and differences in physical performance in adult, professional, U-20 and U-17 years Brazilian first-division soccer players.
Authors: Conall F Murtagh; Thomas E Brownlee; Edgardo Rienzi; Sebastian Roquero; Sacha Moreno; Gustavo Huertas; Giovani Lugioratto; Philipp Baumert; Daniel C Turner; Dongsun Lee; Peter Dickinson; K Amber Lyon; Bahare Sheikhsaraf; Betül Biyik; Andrew O'Boyle; Ryland Morgans; Andrew Massey; Barry Drust; Robert M Erskine Journal: PLoS One Date: 2020-06-22 Impact factor: 3.240
Authors: Miroslav Petr; Dan Thiel; Kvapilová Kateřina; Petr Brož; Tomáš Malý; František Zahálka; Pavlína Vostatková; Michal Wilk; Jakub Chycki; Petr Stastny Journal: Biol Sport Date: 2021-04-21 Impact factor: 2.806
Authors: Juan Del Coso; Gil Rodas; Miguel Ángel Buil; Javier Sánchez-Sánchez; Pedro López; Joaquín González-Ródenas; Pablo Gasulla-Anglés; Álvaro López-Samanes; Sergio Hernández-Sánchez; Ane Iztueta; Víctor Moreno-Pérez Journal: Genes (Basel) Date: 2022-09-12 Impact factor: 4.141