Vassilis Klissouras

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Brain plasticity refers to changes in the organization of the brain as a result of different environmental stimuli. The aim of this study was to assess the genetic variation of brain plasticity, by comparing intrapair differences between monozygotic (MZ) and dizygotic (DZ) twins. Plasticity was examined by a paired associative stimulation (PAS) in 32(More)
The aim of this study was to assess the effect of physical exertion (treadmill) on mental performance (matching a comparison design). Nine pairs of monozygotic twins (boys aged 11 to 14 yr.) were randomly divided into two groups, one trained and one untrained, while eight boys of the same age served as a control group. The trained group underwent a(More)
Identical male twins (four sets aged 10 yr, four sets aged 13 yr, and four sets aged 16 yr) were divided so that one twin underwent strenuos endurance training for 10 wk, while his brother served as a control without training. Intrapair comparisons of the training-period changes in aerobic, anaerobic, and cardiorespiratory responses to maximum work on a(More)
Numerous reports of genetic associations with performance- and injury-related phenotypes have been published over the past three decades; these studies have employed primarily the candidate gene approach to identify genes that associate with elite performance or with variation in performance-and/or injury-related traits. Although generally with small effect(More)
Nine male pairs of monozygotic twins aged 11–14 years, height 147 (7.6) cm and body mass 39.7 (9.6) kg, participated in this study. Twin zygocity was tested using morphological, dermatoglyphic and hematologic methods, and Tanner's five stages were used for the evaluation of biological maturation. One twin from each pair undertook training for 6 months,(More)
The focus of this review is on the role of genes in human phenotypic variation. Early twin studies amply demonstrated that the variation observed in several physiological responses to maximal muscular effort is largely genotype-dependent, while in VO2max variation is almost entirely due to the variety of genotypes that exist in individuals. More recent(More)
A pair of monozygous twins, a trained athlete and his identical untrained counterpart, were tested over a period of 1 1/2 years. Monozygosity was established on the basis of morphological traits and serological criteria. Repeated measurements obtained during basal conditions, submaximal and maximal exercise on a cycle ergometer disclosed that: a) the basal(More)