Browsing by Subject "Heart rate variability"

Now showing 1 - 5 of 5
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    Autonomic markers associated with generalized social phobia symptoms: heart rate variability and salivary alpha-amylase
    (Taylor and Francis Group, 2017) Espín López, Laura; García Rubio, María J.; Hidalgo, Vanesa; Salvador, Alicia; Gómez Amor, Jesús; Anatomía Humana y Psicobiología; Facultades de la UMU::Facultad de Psicología y Logopedia
    The study of autonomic nervous system changes associated with generalized social phobia (GSP) dis- order has increased in recent years, showing contradictory results. The present study aimed to evaluate how young people with GSP reacted before, during, and after exposure to the Trier Stress Social Test (TSST), focusing on their autonomic changes (heart rate variability (HRV) and salivary alpha-amylase (sAA)) compared to a control group (non-GSP). Some psychological variables were also considered. Sex was specifically studied as a possible modulator of autonomic fluctuations and psychological state. Eighty young people were randomly distributed into two counterbalanced situations: stress condition (N1⁄418 and 21 for GSP and non-GSP, respectively) and control condition (N1⁄421 and 20 for GSP and non-GSP, respectively), where cardiovascular variables were continuously recorded. Psychological ques- tionnaires about mood and perceived stress were filled out, and five saliva samples were collected to analyze sAA. GSP participants showed higher values on low- and high-frequency ratios (HR domains), compared to non-GSP people, during exposure to the TSST, but no differences were observed after the stressor. Furthermore, the two groups did not differ in sAA. Importantly, positive affect in GSP partici- pants was modulated by sex. The present study suggests that the balance between high- and low-fre- quency domains of HRV is a key cardiovascular marker reflecting the stress response of GSP people, as well the importance of sex in positive affect when facing a stressful situation.
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    Cardiovascular response to stress in patients with drug-resistant epilepsy: preliminary data
    (Universidad de Murcia. Servicio de Publicaciones, 2021) Lozano-García, Alejandro; Catalán, Judit; Hampel, Kevin; Villanueva, Vicente; González-Bono, Esperanza; Cano-López, Irene
    El estrés es un factor de riesgo para las enfermedades cardiovasculares en la población general. La epilepsia se ha considerado un modelo adecuado de estrés crónico, con mayor incidencia de mortalidad cardiovascular que la población general. Este estudio proporciona datos preliminares sobre la respuesta cardiovascular ante un estresor cognitivo y una evaluación neuropsicológica en pacientes con epilepsia, explorando las relaciones entre la respuesta cardiovascular y el rendimiento cognitivo dependiendo del hemisferio responsable de la epilepsia. Treinta y cinco pacientes con epilepsia farmacorresistente, 17 con el área epileptógena(AE) en el hemisferio izquierdo (LH) y 18 con AE en el hemisferio derecho (RH), se sometieron a un estres cognitivo y una evaluación neuropsicológica. La respuesta cardiovascular se registró durante toda la sesión en ambas condiciones. Los resultados mostraron que una evaluación neuropsicológica de larga duración fue capaz de producir una respuesta cardiovascular modulada por el hemisferio, con disminuciones de la frecuencia cardíaca (y aumentos del intervalo RR) más pronunciadas en el período post-evaluación en pacientes con epilepsia del HI que en pacientes con epilepsia del HD (p = .05, p = .01, respectivamente). El hemisferio del AE moderó la relación entre la respuesta cardiovascular y el rendimiento cognitivo (para todos, p < .03). Nuestros hallazgos podrían tener implicaciones clínicas desde una perspectiva preventiva, ya que sugieren que el hemisferio del AE podría ser un factor relevante en el afrontamiento del estrés en personas con epilepsia farmacorresistente.
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    Changes in saliva biomarkers during a standardized increasing intensity field exercise test in endurance horses
    (Elsevier B.V., 2021) Contreras-Aguilar, María Dolores; Cerón, J.J.; Muñoz, A.; Ayala de la Peña, Ignacio; Medicina y Cirugía Animal
    Salivary biomarkers could be useful to evaluate stress, fitness level, and skeletal muscle damage associ-ated to exercise in horses in an easy and non-painful way. Therefore, this study aims to evaluate if cortisol in saliva (sCor), salivary alpha-amylase (sAMY) and butyrylcholinesterase (sBChE) and lactate (sLA) and creatine kinase (sCK) in saliva of horses can show changes during a standardized exercise test, and if they are related to heart rate variability (HRV) parameters related to sympathetic and parasympathetic tone, fitness level or skeletal muscle damage. For this purpose, ten endurance horses were submitted to a stan-dardized exercise test in field conditions. Saliva and blood were obtained at basal time (TB), after the seven bouts of velocity (T + 01 to T + 07), and 5, 15, 30, and 45 min later (T + 5, T + 15, T + 30, and T+ 45). Five endurance horses in resting condition (control group) were also enrolled. HRV and fitness level parameters, and plasma CK as a marker of muscle damage were also evaluated. Salivaryalpha-amylase increased at T + 30 (P = 0.03), sBChE at T + 5 (P = 008), and sCK at T + 07 (P = 0.009) after the exercise test, with significant differences between the exercise and control groups’ results. The sCor did not show sig-nificant changes during the exercise test in the exercise group but higher concentration compared to the control horses (P < 0.001) were observed. sCor, sAMY, sBChE, and sCK showed a positive correlation (r val-ues between 0.47 and 0.64) with the sympathetic tone and a negative correlation (r values between 0.37 and 0.56) with the parasympathetic tone. In conclusion, sAMY, sBChE, and sCK showed signifi-cant increases in ten endurance horses after an increasing intensity velocity exercise. Values of sCor, sAMY, sBChE, and sCK were associated with HRV, which is used to evaluate stress, and therefore, they could be potentially used to assess the exercise-related stress after a physical effort.
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    El dilema de lo orgánico y lo social en las emociones deportivas
    (Universidad de Murcia. Servicio de Publicaciones, 2014) Yuste Lucas, Juan Luis; Alonso Roque, José Ignacio; Gea García, Gemma María; Ureña Ortín, Nuria
    La relación entre las emociones y variables fisiológicas es un hecho cada vez más investigado en el ámbito físico-deportivo. Así, el presente trabajo, fruto de una revisión bibliográfica, tiene como objetivo analizar aquellos estudios que han acometido investigaciones sobre posibles correlaciones, positivas o negativas, habidas entre las emociones y parámetros biológicos. En este sentido, y a nivel hormonal, se analiza la relación existente entre el cortisol y el estrés psicofisiológico, donde dicha hormona es un factor que puede ser utilizado como un indicador del estado emocional, y en el que una prolongada situación de emocional negativa puede conllevar a un estado de enfermedad pisco-física. Del análisis sobre la actividad electroencefalográfica y las emociones, apuntar una estrecha relación entre ambas, llegándose a construir verdaderas bases de datos de emociones como consecuencia de señales fisiológicas. Por otra parte, también encontramos estrechos la-zos entre la variabilidad de la frecuencia cardíaca y el estado de ánimo. Por último, también se analizan trabajos que han investigado sobre la relación entre la composición corporal y el psicotipo, hallando una correlación entre emoción positiva y tipo de somatotipo
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    Effects of sex and menstrual cycle phase on cardiac response and alpha- amylase levels in psychosocial stress
    (Elsevier, 2019-01) Espín López, Laura; Villada, Carolina; Hidalgo, Vanesa; Salvador, Alicia; Anatomía Humana y Psicobiología; Facultades de la UMU::Facultad de Psicología y Logopedia
    The impact of sex and the menstrual cycle phase on the autonomic response to psychosocial stress remains controversial. This study explored autonomic nervous system activity through salivary alpha-amylase, heart rate, and heart rate variability responses to the Trier Social Stress Test (TSST) in healthy young people. The sample was composed of 25 men, 26 women in the luteal phase, and 25 women in the follicular phase, from 18 to 25 years of age. Participants were exposed to the TSST or a control condition. The results indicate that women in their follicular phase showed a blunted alpha-amylase response to stress compared to men and women in the luteal phase. In addition, men showed higher sympatho-vagal activity in the stress condition compared to the two groups of women. These results confirm that sex and the menstrual cycle phase are potential modulators of autonomic nervous system reactivity to psychosocial stress.