Changes in the Variability of the Heart Rate during Mental Stress
Zmeny variability frekvencie srdca (VFS) pri mentálnej záťaži
Cieľom práce bolo zistiť zmeny a dynamiku zmien parametrov variability frekvencie srdca (VFS) počas a pomentálnej záťaži (MZ) aritmetickým testom, posúdiť vhodnosť používania metodiky spektrálnej analýzy VFS nahodnotenie odpovedí frekvencie srdca na MZ u mladých jedincov a zistiť eventuálne rozdiely medzi chlapcamia dievčatami.Celkovo bolo vyšetrených 29 jedincov (14 dievčat, 15 chlapcov) vo veku 19 - 21 rokov. Probandi boli vyšetrenísystémom Varia-Pulse TF3 (Sima Media, Olomouc) v sediacej polohe v slede: snímanie VFS v pokoji (T1), počasMZ (T2), ihneď po MZ (T3) a v intervale 5 - 10 minúť od ukončenia MZ (T4). Snímanie VFS v jednotlivýchčasových intervaloch trvalo 5 minút. Na vyvolanie MZ bol použitý sčítací test „PMT - psychomotorické tempo“(Psycho-soft-system, Psychodiagnostika, a.s., Bratislava), počas ktorého boli probandi rušení metronómom.Vyhodnocované parametre: R-R interval, MSSD, total power, power VLF, LF, HF a ratio VLF/HF. Štatistickyboli údaje hodnotené pomocou Wilcoxonovho a Mann-Whitneyho testu.Počas MT (T2) oproti pokojovému stavu (T1) sa R-R intervaly signifikantne skrátili (p
Klíčová slova:
mladí jedinci, frekvencia srdca, spektrálna analýza, mentálna záťaž
Authors:
I. Tonhajzerová
; K. Javorka; M. Petrášková
Authors‘ workplace:
Ústav fyziológie Jesseniovej lekárskej fakulty UK, Martin
Published in:
Čes-slov Pediat 2000; (9): 562-567.
Category:
Overview
The objective of the work was to assess changes and the dynamics of changes on the parameters of heart ratevariability (HRV) during and after a mental stress (MS) caused by an arithmetic test, to assess the suitability ofthe method of spectral analysis of HRV for evaluation of the response of the heart rate to mental stress in youngsubjects and assess possible differences between boys and girls.A total of 29 subjects were examined (14 girls, 15 boys) aged 19 - 21 years. The probands were examined by theVaria-Pulse TF3 system (Sima Media, Olomouc) in a sedentary position in the following sequence: recording ofHRV at rest (T1), during mental stress (T2), immediately after mental stress (T3) and after a 5 - 10-minute intervalfollowing termination of mental stress (T4). Recording of the HRV at different time intervals took 5 minutes. Toinduce mental stress the adding test was used „PMT-psychomotor rate“ (Psycho-soft-system, P sychodiagnostikaa.s., Bratislava) during which the probands were disturbed by a metronome.The evaluated parameters were: R-R interval, MSSD, total power, power VLF, LF, HF and VLF/HF ratio. Thevalues were evaluated by the Wilcoxon and Mann-Whitney test.During mental stress (T2), as compared with the state at rest (T1) the R-R intervals were significantly reduced(p
Key words:
young people, heart rate, spectral analysis, mental stress
Labels
Neonatology Paediatrics General practitioner for children and adolescentsArticle was published in
Czech-Slovak Pediatrics
2000 Issue 9
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