A linear regression was used to assess how estimates of heritability vary according to the type of country (qualitative variable, two modalities: industrial, non-industrial), controlling for the year of sampling (quantitative variable, centred), the frequency of left-handedness (quantitative variable,...
The players in the sample of this study were men and women, all federated and belonging to university sports schools of basketball and volleyball. The digital COISport Vision system (Centro de Optometría Internacional, Madrid, Spain) was used to assess the participants’ vision. This software ...