The effects of isokinetic high intensity interval exercise on skeletal muscle and cerebral oxygenation

Postgraduate Thesis uoadl:2960794 9 Read counter

Κατεύθυνση Εργοφυσιολογία, Διατροφή, Άσκηση και Ποιότητα Ζωής
Library of the School of Physical Education and Sport Science
Deposit date:
Perentis Panagiotis-Athanasios
Supervisors info:
Πασχάλης Β., Επίκουρος Καθηγητής, ΣΕΦΑΑ, ΕΚΠΑ
Γελαδάς Ν., Καθηγητής, ΣΕΦΑΑ, ΕΚΠΑ
Μπουντόλος Κ., Καθηγητής, ΣΕΦΑΑ, ΕΚΠΑ
Original Title:
Η επίδραση της ισοκινητικής διαλειμματικής άσκησης υψηλής έντασης στην οξυγόνωση του έξω πλατύ μηριαίου και του εγκεφάλου
Translated title:
The effects of isokinetic high intensity interval exercise on skeletal muscle and cerebral oxygenation
This study aimed to explore the effects of cycling, isokinetic concentric and isokinetic eccentric high-intensity interval exercise (HIIE) on skeletal muscle (vastus lateralis) and cerebral (right frontal lobe) oxygenation. Twelve healthy males (n=12, age 26±1 yr, body mass 78.4±2 kg, height 176±2 cm, body fat 17±1%) performed in random order cycling exercise and isokinetic concentric and eccentric exercise. The pairing between limbs and the modality of isokinetic exercise was randomly assigned. During the cycling exercise, participants performed a total of 7 sets of maximal intensity which lasted 7 seconds and used a load equal to 7.5% of their body weight. During the isokinetic concentric and eccentric exercise they performed 7 sets of 5 maximal muscle contraction. A 15-sec passive rest protocol was adopted between sets, during all three conditions. ΗΙΙΤ exercise during cycling elicited a bigger increase in fatigue index. Muscle oxygenation was significantly reduced during HIIE in all three exercise modalities, with no difference between them. Cerebral oxygenation was affected only marginally during cycling exercise, while no difference was observed between conditions. It is concluded that, for the quadriceps muscles, cycling HIIE is more taxing with respect to skeletal muscle oxygenation, compared to isokinetic exercise of matching duration and intensity.
Main subject category:
Education - Sport science
eccentric, concentric, cycling, muscle, cerebral
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