Analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of gender
Heart rate variability (HRV), the variation of time intervals between heartbeats, reflects the result of the interaction between the autonomic nervous system and the cardiovascular system. Hypoxia is a stressor that causes changes in HRV and a decrease in arterial oxygen saturation (SaO2). The aim...
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FEADEF
2024-06-01
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| Series: | Retos: Nuevas Tendencias en Educación Física, Deportes y Recreación |
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| Online Access: | https://recyt.fecyt.es/index.php/retos/article/view/102983 |
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| author | Cristina Rochel Vera Inés Albertus Cámara Ignacio Martínez González-Moro |
| author_facet | Cristina Rochel Vera Inés Albertus Cámara Ignacio Martínez González-Moro |
| author_sort | Cristina Rochel Vera |
| collection | DOAJ |
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Heart rate variability (HRV), the variation of time intervals between heartbeats, reflects the result of the interaction between the autonomic nervous system and the cardiovascular system. Hypoxia is a stressor that causes changes in HRV and a decrease in arterial oxygen saturation (SaO2). The aim of our study is to analyse if the time and frequency domains of HRV are affected after a hypoxia tolerance test in healthy participants as a function of gender. Material and methods: 23 healthy volunteers (11 women and 12 men) with a mean age of 23.08±2.99 performed a hypoxia tolerance test (11%, 5050 m) with the iAltitude simulator. Heart rate and SaO2 were monitored during the test and HRV frequency domain (FD) and time domain (TD) data were obtained. We analysed the five minutes before and after each session. Outcomes: Simulated altitude-induced hypoxia can cause changes in HRV in a group of healthy individuals. Statistically significant differences were also found between before and after the normobaric hypoxia test in the time-domain variables RRm, SDNN, HRm, HR STD, pNN50. In addition, in women statistically significant differences were found in RMSSD, and in the frequency-domain variables HF and LF/HF. While in males, statistically significant differences were found in SDNN. In both men and women, significant differences were observed in RRm, HRm and pNN50. Conclusion: The differences found in HRV after the hypoxia tolerance test indicate that females show a greater activation of the parasympathetic nervous system compared to males. While males showed greater sympathetic activation.
Keywords: Heart rate variability, normobaric hypoxia, stress, autonomic nervous system.
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| format | Article |
| id | doaj-art-0fb82b3e3ce64fedbb4fa270b83e7c8a |
| institution | DOAJ |
| issn | 1579-1726 1988-2041 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | FEADEF |
| record_format | Article |
| series | Retos: Nuevas Tendencias en Educación Física, Deportes y Recreación |
| spelling | doaj-art-0fb82b3e3ce64fedbb4fa270b83e7c8a2025-08-20T02:39:24ZengFEADEFRetos: Nuevas Tendencias en Educación Física, Deportes y Recreación1579-17261988-20412024-06-015510.47197/retos.v55.102983Analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of genderCristina Rochel VeraInés Albertus CámaraIgnacio Martínez González-Moro Heart rate variability (HRV), the variation of time intervals between heartbeats, reflects the result of the interaction between the autonomic nervous system and the cardiovascular system. Hypoxia is a stressor that causes changes in HRV and a decrease in arterial oxygen saturation (SaO2). The aim of our study is to analyse if the time and frequency domains of HRV are affected after a hypoxia tolerance test in healthy participants as a function of gender. Material and methods: 23 healthy volunteers (11 women and 12 men) with a mean age of 23.08±2.99 performed a hypoxia tolerance test (11%, 5050 m) with the iAltitude simulator. Heart rate and SaO2 were monitored during the test and HRV frequency domain (FD) and time domain (TD) data were obtained. We analysed the five minutes before and after each session. Outcomes: Simulated altitude-induced hypoxia can cause changes in HRV in a group of healthy individuals. Statistically significant differences were also found between before and after the normobaric hypoxia test in the time-domain variables RRm, SDNN, HRm, HR STD, pNN50. In addition, in women statistically significant differences were found in RMSSD, and in the frequency-domain variables HF and LF/HF. While in males, statistically significant differences were found in SDNN. In both men and women, significant differences were observed in RRm, HRm and pNN50. Conclusion: The differences found in HRV after the hypoxia tolerance test indicate that females show a greater activation of the parasympathetic nervous system compared to males. While males showed greater sympathetic activation. Keywords: Heart rate variability, normobaric hypoxia, stress, autonomic nervous system. https://recyt.fecyt.es/index.php/retos/article/view/102983Heart rate variability, normobaric hypoxia, stress, autonomic nervous system |
| spellingShingle | Cristina Rochel Vera Inés Albertus Cámara Ignacio Martínez González-Moro Analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of gender Retos: Nuevas Tendencias en Educación Física, Deportes y Recreación Heart rate variability, normobaric hypoxia, stress, autonomic nervous system |
| title | Analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of gender |
| title_full | Analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of gender |
| title_fullStr | Analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of gender |
| title_full_unstemmed | Analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of gender |
| title_short | Analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of gender |
| title_sort | analysis of the factors of heart rate variability affected after a hypoxia tolerance test as a function of gender |
| topic | Heart rate variability, normobaric hypoxia, stress, autonomic nervous system |
| url | https://recyt.fecyt.es/index.php/retos/article/view/102983 |
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