Unit:
ΠΜΣ Βιολογία της ΆσκησηςLibrary of the School of Physical Education and Sport Science
Author:
Perissiou Maria-Christina
Supervisors info:
Μπαλτόπουλος Π., Αναπληρωτής Καθηγητής, ΤΕΦΑΑ, ΕΚΠΑ
Γελαδάς Ν., Καθηγητής, ΤΕΦΑΑ, ΕΚΠΑ
Θανόπουλος Β., Επίκουρος Καθηγητής, ΤΕΦΑΑ, ΕΚΠΑ
Original Title:
Η επίδραση της στάσης σώματος στον όγκο αίματος μετά από άσκηση στο νερό
Translated title:
Η επίδραση της στάσης σώματος στον όγκο αίματος μετά από άσκηση στο νερό
Summary:
Changes in plasma volume after exercise is an adaptation that has been observed by several investigators, in an attempt to explain the mechanism of blood volume redistribution be twin fluid compartments. Posture plays a major role in the expansion of blood plasma after aerobic exercise (within 24 hours) as the phenomenon of hypervolaemia appears only after exercise in upright posture. The mechanism by which the body posture during exercise affects plasma albumin (major plasma protein) distribution between the intravascular and extravascular space after exercise is unknown. The purpose of this study was the comparative examination of the effect of posture in plasma volume during and after exercise in water. To test this hypothesis twelve subjects performed intermittent high intensity exercise (4 min at 85% VO2max, 5 min at 40% VO2max repeated 3 times) on separate days in the water in vertical and supine posture. Changes in plasma volume expansion were calculated from changes in hematocrit and hemoglobin. Plasma albumin content was also measured. Main finding of this study was the statistically significant difference in the increase of plasma volume 24 hours after high intensity intermittent exercise between the two protocols performed in water, one in an horizontal (0.73%) and the other in a vertical body position (3.4%.). Blood samples that were collected immediately after exercise, presented a reduction in plasma volume rates in both protocols. The above results are attributable due to hemoconcetration, an adaptation of the blood that has been usually observed after exercise. Results confirm that the vertical posture promotes a greater expansion of plasma than the supine posture during exercise in water. Additionally important was the observation that the difference between pre and post (24 hours after exercise) values of albumin between the two conditions were identical for the two protocols while there was an observed difference in plasma volume. The above observation leads us to assume that the role of albumin is not a key factor regarding the changes occurring in plasma volume after exercise in water.
Notes:
H διατριβή έχει κατατεθεί σε έντυπη μορφή στη βιβλιοθήκη ΣΕΦΑΑ
