Reliability and Sensitivity of Nocturnal Heart Rate and Heart-Rate Variability in Monitoring Individual Responses to Training Load
Nuuttila, O.-P., Seipäjärvi, S., Kyröläinen, H., & Nummela, A. (2022). Reliability and Sensitivity of Nocturnal Heart Rate and Heart-Rate Variability in Monitoring Individual Responses to Training Load. International Journal of Sports Physiology and Performance, 17(8), 1296-1303. https://doi.org/10.1123/ijspp.2022-0145
Julkaistu sarjassa
International Journal of Sports Physiology and PerformancePäivämäärä
2022Oppiaine
LiikuntafysiologiaPsykologiaMonitieteinen aivotutkimuskeskusHyvinvoinnin tutkimuksen yhteisöExercise PhysiologyPsychologyCentre for Interdisciplinary Brain ResearchSchool of WellbeingTekijänoikeudet
© 2022 Human Kinetics, Inc.
Purpose: To assess the reliability of nocturnal heart rate (HR) and HR variability (HRV) and to analyze the sensitivity of these markers to maximal endurance exercise. Methods: Recreational runners recorded nocturnal HR and HRV on nights after 2 identical low-intensity training sessions (n = 15) and on nights before and after a 3000-m running test (n = 23). Average HR, the natural logarithm of the root mean square of successive differences (LnRMSSD), and the natural logarithm of the high-frequency power (LnHF) were analyzed from a full night (FULL), a 4-hour (4H) segment starting 30 minutes after going to sleep, and morning value (MOR) based on the endpoint of the linear fit through all 5-minute averages during the night. Differences between the nights were analyzed with a general linear model, and intraclass correlation coefficient (ICC) was used for internight reliability assessments. Results: All indices were similar between the nights followed by low-intensity training sessions. A very high ICC (P < .001) was observed in all analysis segments with a range of .97 to .98 for HR, .92 to .97 for LnRMSSD, and .91 to .96 for LnHF. HR increased (P < .001), whereas LnRMSSD (P < .01) and LnHF (P < .05) decreased after the 3000-m test compared with previous night only in 4H and FULL. Increments in HR (P < .01) and decrements in LnRMSSD (P < .05) were greater in 4H compared with FULL and MOR. Conclusions: Nocturnal HR and HRV indices are highly reliable. Demanding maximal exercise increases HR and decreases HRV most systematically in 4H and FULL segments.
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Julkaisija
Human KineticsISSN Hae Julkaisufoorumista
1555-0265Asiasanat
Julkaisuun liittyvä(t) tutkimusaineisto(t)
Nuuttila, Olli-Pekka. (2023). Monitoring recovery and training responses from different types of endurance exercises and training protocols in recreational runners: implications for individual training prescription . University of Jyväskylä. https://doi.org/10.17011/jyx/dataset/84680. https://urn.fi/URN:NBN:fi:jyu-202301031038Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/148907324
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Lisätietoja rahoituksesta
The research project was partially funded by grants from the Foundation of Sports Institute and The Finnish Sports Research Foundation.Lisenssi
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