Current issue
Volume 18, Issue 1, 2026
Online ISSN: 2406-1379
ISSN: 1821-3480
Volume 18 , Issue 1, (2026)
Published: 17.12.2025.
Open Access
Online First is a feature that enables the publication of final revised articles online before their inclusion in a printed issue. This accelerates the dissemination of research findings and ensures that your authors' work reaches the audience promptly.
Articles published through Online First are assigned a DOI upon their online posting. They should be cited as follows:
Author(s). Title of the article. Exercise and Quality of Life. Advance online publication. DOI:10.31382/xxxx
After assignment to a final issue, citations can include the volume and page numbers in addition to the DOI.
Once articles are allocated to a specific issue, their hosting transitions from the Online First page to the main journal archive. The DOI ensures persistent accessibility.
Citations to Online First articles are counted toward the journal's Impact Factor if other indexing criteria are met. This promotes earlier engagement with the published work.
Online First articles are considered final but not definitive until assigned to a specific issue. Errors identified in the online version can be corrected before the final issue publication.
All issues
Contents
01.06.2012.
Original scientific paper
Heart rate changes (HR) and oxygen saturation in blood (AO2) dependency in relation to the static apnea duration (STA)
In static apnea discipline diver holds the breath in standstill condition. Diving
reflex represents a reaction of the body to apnea dive with responses of effectors:
bradycardia, peripheral vasoconstriction, splenic contractions. Physiological significance
of these body changes implies reduction of oxygen consumption. The main objective of
this research is to examine characteristics of connection between heart rate changes (HR)
and changes in oxygen saturation in blood (SaO2) during apnea. A group of 15 breath
hold divers was examined. Tests were conducted during static apnea, heart rate (HR) was
measured as well as oxygen saturation in blood (SaO2). The changes in HR and SaO2
during apnea demonstrated statistically significant correlation. Higher HR values in apnea
indicate higher mental tonus during apnea which is followed by higher muscle tonus. The
consequence is a greater consumption of O2 and lower values of SaO2min. There is
statistically significant correlation between intensity of diving reflex activation and
oxygen conserving (less reduction of SaO2).
Ognjen Pedja Tutorov
