Supervisors info:
ΝΤΑΛΛΑΣ ΓΕΩΡΓΙΟΣ, ΑΝΑΠΛΗΡΩΤΗΣ ΚΑΘΗΓΗΤΗΣ, ΤΟΜΕΑΣ ΓΥΜΝΑΣΤΙΚΗΣ ΚΑΙ ΧΟΡΟΥ, ΤΜΗΜΑ ΕΠΙΣΤΗΜΗΣ ΦΥΣΙΚΗΣ ΑΓΩΓΗΣ ΚΑΙ ΑΘΛΗΤΙΣΜΟΥ ΑΘΗΝΩΝ, ΕΘΝΙΚΟ ΚΑΙ ΚΑΠΟΔΙΣΤΡΙΑΚΟ ΠΑΝΕΠΙΣΤΗΜΙΟ ΑΘΗΝΩΝ
Summary:
Post-activation potentiation (PAP) is a phenomenon that has been defined as the increase of muscular activity after a stimulation that results from a specific form of stress. In detail, it is a neuro-muscular phenomenon, in which the force and power that is produced by a muscle is increased directly after high stamina exercise. This mechanic has been widely recognised in worldwide literature, especially the last 10 years.The main reason for the rise in interest is our difficulty in understanding its exact mechanical function and the conditions which favour its occurrence. According to literature, PAP is defined as the occurrence of increased voluntary or caused force after a maximum power voluntary contraction or tetanic stimulation. Its occurrence is most commonly attributed to the increased mobility of Ca2+ and the phosphorylation of thin chain of myosin. Most of the times, research on post-activation potentiation examines a practice during which high stamina training is executed before a forceful movement of body weight with common characteristics. While most of research has been using men as subjects, there is little to be found related to women.Therefore, the aim of this research is to examine PAP of back sit-ups in static sit-up jumps (SSJ). The subjects in this research were 29 female athletes, who were part of this university’s team, fulfilling certain requirements, and the results were statistically analysed using SPSS. In detail, ANOVA control was implemented to measure the main results on time, team, and outcomes of the interaction.The athletes executed initially 3 SSJs and then 3 repetitions of back sit-ups at 90% RM. After 5 minutes of rest, the athletes repeated 3 SSJs for maximum height, with the highest force being calculated with the Sayers equation. Overall, a strong connection was observed between time and team. Specifically, the volleyball team had a significant reduction in strength and the main results related to time were not noteworthy, implying that for the whole team there was no indication PAP reaction or changes in the externalisation of force. In conclusion, the results of this research have shown that one PAP set, which included 90% IRM followed by 5 minutes of rest failed to improve the static sit-up – jumps executed by the athletes.Finally, trainers working with women need to be informed that the successful execution of PAP appears to be very personalised, resulting in its occurrence being connected to the strength of each athlete and rest intervals – which should be taken into account when trying to work on its improvement.
