In 2009 he appeared at the Department. of C.C. Historicals of the ULPGC the research report "Natural Markers of physical activity in the Aboriginal population of Gáldar (11-XV centuries)", with which the diploma of advanced studies (DEA) was obtained. The objective of this research work was to verify the existence of the social division of labour during the final period of the pre-Hispanic occupation of Gáldar. To prove this hypothesis, the bone markers of physical activity were analyzed in the upper extremity of the skeletal series of the cemeteries of El Agujero (n.41) and Juan Primo (n-9), both located in Gáldar and dated by radiocarbonic methods between the 11th and 15th centuries AD.
Physical activity markers are bone reactions that originate in response to prolonged physical activity or occupation over time. Thus, his analysis is intended as a valid tool for the study of everyday activity patterns. Specifically, two types of markers were analysed in this research project. The first was the change in the robustness of the enthesis or musculoskeletal markers, which are bone expressions that inform about the biomechanical chains made by individuals and, second, the degree of robustness of the upper limb, a variable that informs about the adaptation of long bones to the mechanical loads supported on a regular basis. A visual and descriptive atlas of the degree of robustness of humerus, ulna and radius enthesis was developed as the main methodological contribution. This standard was possible by studying the osteological series deposited in The Canary Museum, where the human remains of the Hole analyzed in this work are also preserved. This methodology has been unpublished in the bioarqueological study of the aboriginal population of Gran Canaria and, at present, the analysis sample with deposits from all over the island area continues to be expanded.
The results obtained in this research paper showed statistically significant inequalities between the two populations, between the sexes and, to a lesser extent, between the laterality of the limbs and the age. These data highlight obvious differences in the patterns of activity carried out by these populations. These inequalities suggest the existence of differences in the position occupied by the different individuals of El Agujero and Juan Primo in the organization of the production process and, more specifically, of the existence of social division of labor in the pre-Hispanic Gáldar of the XI-XV centuries.
Finally, it can be said that this perspective of analysis raises new opportunities to increase our knowledge of the pre-European past of Gran Canaria. A future doctoral thesis hopes to present more elements of discussion to the general debate on the way of life of the former canaries, where the organization of the work process and the role of the workforce, are shown as extremely promising categories of analysis for the reconstruction of Aboriginal social relations.