1. Effect of prenatal yoga versus moderate-intensity walking on cardiorespiratory adaptation to acute psychological stress: insights from non-invasive beat-to-beat monitoringMiha Lučovnik, Helmut Karl Lackner, Ivan Žebeljan, Manfred Georg Mörtl, Izidora Vesenjak Dinevski, Adrian Mahlmann, Dejan Dinevski, 2024, original scientific article Abstract: We recently reported enhanced parasympathetic activation at rest throughout pregnancy associated with regular yoga practice. The present study presents a secondary analysis of data collected within a prospective cohort study of 33 pregnant women practicing yoga once weekly throughout pregnancy and 36 controls not involved in formal pregnancy exercise programs. The objective was to assess the impact of prenatal yoga on the autonomic nervous system stress response. Healthy pregnant women with singleton pregnancies were recruited in the first trimester. There was no significant difference in the maternal body mass index (BMI) between the yoga group and the controls (24.06 ± 3.55 vs. 23.74 ± 3.43 kg/m2, p = 0.693). Women practicing yoga were older (28.6 ± 3.9 vs. 31.3 ± 3.5 years, p = 0.005) and more often nulliparous (26 (79%) vs. 18 (50%), p = 0.001). We studied heart rate variability (HRV) parameters in the time domain (SDNN, standard deviation of regular R-R intervals, and RMSSD, square root of mean squared differences of successive R-R intervals) and frequency domain (ln(LF/HF), natural logarithm of low-frequency to high-frequency power), as well as synchronization indices of heart rate, blood pressure and respiration during and immediately following acute psychological stress of a standardized mental challenge test. Measurements were performed once per trimester before and after yoga or a 30 min moderate-intensity walk. Statistical comparison was performed using three-way analyses of variance (p < 0.05 significant). Time domain HRV parameters during and following mental challenge in the yoga group were significantly higher compared to the controls regardless of the trimester (F = 7.22, p = 0.009 for SDNN and F = 9.57, p = 0.003 for RMSSD, respectively). We observed no significant differences in the yoga group vs. the controls in terms of ln(LF/HF) and synchronization indices. Regular prenatal yoga practice was associated with a significantly reduced sympathetic response to mental challenge and quicker recovery after acute psychological stress. These effects persisted throughout pregnancy with regular practice.
Keywords: pregnancy, yoga, heart rate variability, cardio-respiratory adaptation, autonomic nervous system, mental challenge
Published in DKUM: 28.03.2025; Views: 0; Downloads: 3
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2. Vpliv joge v nosečnosti na variabilnost srčne frekvence in sinhronizacijo srčno-žilnega sistema z dihanjem po izpostavljenosti stresuIvan Žebeljan, 2024, doctoral dissertation Abstract: Vadba joge v nosečnosti bi lahko pozitivno vplivala na potek nosečnosti preko delovanja na avtonomni živčni sistem nosečnice. Namen raziskave je bil ovrednotiti vpliv vadbe joge v nosečnosti na avtonomno živčevje z meritvami variabilnosti srčne frekvence (HRV) in kardiorespiratorne sinhronizacije.
Vključili smo 69 nosečnic: 33 jih je redno vadilo jogo in 36 kontrol. Trikrat tekom nosečnosti smo opravili meritve HRV in faznih kardiorespiratornih sinhronizacijskih indeksov. Meritve smo opravili pred in po vadbi joge (ali 30-minutnem sprehodu v kontrolni skupini) v mirovanju ter med in po testu pomnjenja (mentalnemu stresu). Za statistično analizo smo uporabili 2x3x2 tri-smerno analizo variance. Statistično značilnost smo določili pri p<0,05.
Analiza HRV je pokazala povečane vrednosti HRV kazalcev, kar nakazuje na povečano parasimpatično aktivnost v mirovanju ter med in po izpostavljenosti stresu pri nosečnicah, ki so vadile jogo (vse p vrednosti <0,01). Statistično pomembnih razlik v kardiorespiratorni sinhronizaciji med skupinama ni bilo.
Vadba joge v nosečnosti je povezana z višjo parasimpatično aktivnostjo, ki se kaže s povišanimi kazalci HRV v mirovanju ter ob akutnem stresu. Ob redni vadbi ti učinki vztrajajo skozi celotno nosečnost.
Keywords: joga, nosečnost, variabilnost srčne frekvence, kardiorespiratorna sinhronizacija, mentalni stres
Published in DKUM: 09.12.2024; Views: 0; Downloads: 31
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4. The role of modified vaginal microbiota on postoperative bleeding following large loop exscision of the transformation zone (LLETZ)Darja Arko, Tomaž Rojko, Andrej Cokan, Ivan Žebeljan, Iztok Takač, 2021, original scientific article Keywords: genital pathogens, chlamydia trachomatis, induction of anesthesia, oxygen delivery, elderly
Published in DKUM: 22.01.2023; Views: 633; Downloads: 57
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6. GinekologijaDarja Arko, Elko Borko, Radovan Breznik, Igor But, Raja Gošnak Dahmane, Zlatka Rakovec-Felser, Vida Gavrić-Lovrec, Borut Gorišek, Borut Kovačič, Tatjana Kodrič, Božo Kralj, Boštjan Lovšin, Gregor Pivec, Božena Primožič, Milan Reljič, Iztok Takač, Veljko Vlaisavljević, Ivan Žebeljan, Branka Žegura Andrić, 2008, reviewed university, higher education or higher vocational education textbook Abstract: Ginekologija
Keywords: načrtovanje družine, ginekološka onkologija, neplodnost, reproduktivno zdravje, ženska spolovila, anatomija, ginekološki pregled, menopavza, nosečnost, splav, dojka, urinska inkontinenca, kirurgija
Published in DKUM: 30.12.2015; Views: 3699; Downloads: 539
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