BIOLOGICAL SECTION   

Medicina dello Sport 2001 March;54(1):1-7

Copyright © 2001 EDIZIONI MINERVA MEDICA

language: Italian

Relationship between hormonal profile, explosive power and subjective assessment of the soccer player technical and physical conditioning profile

Bosco C. ^{1, 2, 3}

¹ Fisiologia Muscolare e Metodologia dell’Allenamento, Facoltà di Medicina, Università Semmelweis, Budapest, Ungheria; ² Docente al Dipartimento di Biologia dell’Attività Fisica, Università di Jyvaskyla, Finlandia; ³ Coordinatore Area Tecnico-Sportiva, Corso di Laurea in Scienze Motorie, Facoltà di Medicina e Chirurgia, Università Tor Vergata, Roma

The pur­pose of the fol­low­ing inves­ti­ga­tion was to mon­i­tor the ­basíc lev­el of ­serum ­free tes­tos­te­rone (Tl) and ­total (Tt), cor­ti­sole (C) and leg explo­sive pow­er dur­ing ­five ­months in fif­teen pro­fes­sion­al soc­cer ­players. All the sub­jects ­were test­ed in ­three dif­fer­ent peri­od: July (­test 1), September (­test 2) and December (­test 3). In the ­last eval­u­a­tion, the leg exten­sor pow­er was ­also meas­ured dur­ing a ver­ti­cal ­jump ­test. Both hor­mo­nal pro­file and explo­sive pow­er capac­ity ­expressed as arbi­trary ­units ­were cor­re­lat­ed ­with the sub­jec­tive assess­ment ­expressed by jour­nal­ist on the tech­ni­cal and phys­i­cal capac­ity ­expressed by the ­players dur­ing ­twelve offi­cial match­es. The ser­um lev­el of C ­remain ­unchanged in September ­while in December ­increased by 20% (p<0.01).
The val­ue of Tt ­increased in September (38%), (p<0.01) and in December (12%) (p<0.05). Similar ­trend was ­observed ­for ­basic ser­um con­cen­tra­tion of Tl. The ­ratio Tt /C or Tl/C dem­on­strat­ed an enhance­ment in September com­pared to July (<0.05), ­while in December non­chang­es ­were not­ed. The ­results ­obtained ­were dis­cussed in func­tion of the cat­a­bol­ic and ana­bol­ic pro­per­ties, ­which are char­ac­ter­is­ing C and T. However, the influ­ence of ­these hor­mones on soci­o-en­vi­ron­men­tal beha­vi­our and on ­physiologícal char­ac­ter­is­tics (e.g. ­speed, pow­er, and ­fatigue) ­were par­tic­u­lar­ly dis­cussed. In con­clu­sion, the ­present ­results dem­on­strat­ed pecu­liar and inter­est­ing obser­va­tions ­since the sub­jec­tive assess­ment, ­expressed by the jour­nal­ists, relat­ed to tech­ni­cal and phys­i­cal con­di­tions ­showed by the ­players dur­ing ­twelve offi­cial match­es was pos­i­tive­ly cor­re­lat­ed ­with the bio­log­i­cal pro­file meas­ured in the soc­cer. It is sug­gest­ed ­that ­even if the ­same work­loads ­could be admin­is­trat­ed to sev­er­al sub­jects, the bio­log­i­cal adap­ta­tion to the train­ing stim­u­lus ­could be rath­er differ­ent ­among the sub­jects. In fact ­socio-envi­ro­nmen­tal con­di­tions ­could ­play an impor­tant ­role on deter­min­ing a pos­i­tive train­ing ­effect.