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Hasegawa M, Sasaki M, Umemoto Y, Hayashi R, Hatanaka A, Hosoki M, Farag A, Matsuura K, Yoshida T, Shimada K, Hamabe L, Takahashi K, Tanaka R. Exploring sleep heart rate variability: linear, nonlinear, and circadian rhythm perspectives. Front Vet Sci 2024; 11:1386425. [PMID: 38665772 PMCID: PMC11044001 DOI: 10.3389/fvets.2024.1386425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024] Open
Abstract
Background Heart rate variability (HRV) is believed to possess the potential for disease detection. However, early identification of heart disease remains challenging, as HRV analysis in dogs primarily reflects the advanced stages of the disease. Hypothesis/objective The aim of this study is to compare 24-h HRV with sleep HRV to assess the potential utility of sleep HRV analysis. Animals Thirty healthy dogs with no echocardiographic abnormalities were included in the study, comprising 23 females and 7 males ranging in age from 2 months to 8 years (mean [standard deviation], 1.4 [1.6]). Methods This study employed a cross-sectional study. 24-h HRV and sleep HRV were measured from 48-h Holter recordings. Both linear analysis, a traditional method of heart rate variability analysis, and nonlinear analysis, a novel approach, were conducted. Additionally, circadian rhythm parameters were assessed. Results In frequency analysis of linear analysis, the parasympathetic index nHF was significantly higher during sleep compared to the mean 24-h period (mean sleep HRV [standard deviation] vs. mean 24 h [standard deviation], 95% confidence interval, p value, r-family: 0.24 [0.057] vs. 0.23 [0.045], 0.006-0.031, p = 0.005, r = 0.49). Regarding time domain analysis, the parasympathetic indices SDNN and RMSSD were also significantly higher during sleep (SDNN: 179.7 [66.9] vs. 156.6 [53.2], 14.5-31.7, p < 0.001, r = 0.71 RMSSD: 187.0 [74.0] vs. 165.4 [62.2], 13.2-30.0, p < 0.001, r = 0.70). In a geometric method of nonlinear analysis, the parasympathetic indices SD1 and SD2 showed significantly higher values during sleep (SD1: 132.4 [52.4] vs. 117.1 [44.0], 9.3-21.1, p < 0.001, r = 0.70 SD2: 215.0 [80.5] vs. 185.9 [62.0], 17.6-40.6, p < 0.001, r = 0.69). Furthermore, the circadian rhythm items of the parasympathetic indices SDNN, RMSSD, SD1, and SD2 exhibited positive peaks during sleep. Conclusion The findings suggest that focusing on HRV during sleep can provide a more accurate representation of parasympathetic activity, as it captures the peak circadian rhythm items.
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Affiliation(s)
- Mizuki Hasegawa
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
- Yokohama Isogo Animal Hospital, Yokohama, Kanagawa, Japan
| | - Mayuko Sasaki
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yui Umemoto
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Rio Hayashi
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Akari Hatanaka
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Marino Hosoki
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ahmed Farag
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Katsuhiro Matsuura
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine University of Florida, Gainesville, FL, United States
| | - Tomohiko Yoshida
- Department of Small Animal Medical Center, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Kazumi Shimada
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Lina Hamabe
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ken Takahashi
- Department of Pediatrics, Juntendo University, Urayasu Hospital, Chiba, Japan
| | - Ryou Tanaka
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Haischer MH, Opielinski LE, Mirkes LM, Uhrich TD, Bollaert RE, Danduran M, Bement MH, Piacentine LB, Papanek PE, Hunter SK. Heart rate variability is reduced in COVID-19 survivors and associated with physical activity and fatigue. Physiol Rep 2024; 12:e15912. [PMID: 38243329 PMCID: PMC10799199 DOI: 10.14814/phy2.15912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/20/2023] [Accepted: 12/20/2023] [Indexed: 01/21/2024] Open
Abstract
Reduced heart rate variability (HRV) and fatigue are common after COVID-19 infection and both are potentially influenced by physical activity (PA). We compared resting HRV, PA from accelerometers and questionnaires, and self-reported fatigue in 41 COVID-19 survivors (~8 months postinfection, 38 ± 17 years) with 41 matched controls. Differences in HRV were observed on acceleration capacity (p = 0.041), deceleration capacity (p = 0.032), high-frequency peak frequency (p = 0.019), absolute low-frequency power (p = 0.042), relative very low-frequency power (p = 0.012), SD2 (from Poincare plot; p = 0.047), and DFA2 (slope of long-term detrended fluctuation analysis; p = 0.004). Fatigue was greater in COVID-19 survivors (p < 0.001) with no differences in PA. Moderate-vigorous physical activity (MVPA) (Standardized Beta = -0.427, p = 0.003) and steps per day (Standardized Beta = -0.402, p = 0.007) were associated with DFA2 in COVID-19 survivors after controlling for age, sex, and body fat percentage. Fatigue was correlated to less MVPA (Spearman's rho = 0.342, p = 0.031) and fewer steps per day (rho = 0.329, p = 0.038) in COVID-19 survivors, and was indirectly linked to HRV through these PA mediators (Estimate = -0.20; p = 0.040). We present a model showing the complex relations between HRV, PA, and fatigue that provides the foundation for strategies to improve outcomes and rehabilitation after COVID-19 infection.
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Affiliation(s)
- Michael H. Haischer
- Exercise Science ProgramMarquette UniversityMilwaukeeWisconsinUSA
- Athletic and Human Performance Research CenterMarquette UniversityMilwaukeeWisconsinUSA
| | | | - Lindsey M. Mirkes
- Department of Physical TherapyMarquette UniversityMilwaukeeWisconsinUSA
- College of NursingMarquette UniversityMilwaukeeWisconsinUSA
| | - Toni D. Uhrich
- Exercise Science ProgramMarquette UniversityMilwaukeeWisconsinUSA
- Athletic and Human Performance Research CenterMarquette UniversityMilwaukeeWisconsinUSA
- Human Performance Assessment CoreMarquette UniversityMilwaukeeWisconsinUSA
| | | | - Michael Danduran
- Exercise Science ProgramMarquette UniversityMilwaukeeWisconsinUSA
- Children’s WisconsinMilwaukeeWisconsinUSA
| | | | - Linda B. Piacentine
- Athletic and Human Performance Research CenterMarquette UniversityMilwaukeeWisconsinUSA
- College of NursingMarquette UniversityMilwaukeeWisconsinUSA
| | - Paula E. Papanek
- Exercise Science ProgramMarquette UniversityMilwaukeeWisconsinUSA
| | - Sandra K. Hunter
- Exercise Science ProgramMarquette UniversityMilwaukeeWisconsinUSA
- Athletic and Human Performance Research CenterMarquette UniversityMilwaukeeWisconsinUSA
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Garg S, Saini P, Rizvi MR, Ahmad F, AlTaweel M, Sabah ZU, Durrani HK, Almasswary SA, Seyam MK, Sharma A, Ahmad I, Marzoogi SA, Shaphe MA, Uddin S, Ahmad I. The Cardiac Comeback-Beating Stronger: Exploring the Remarkable Resilience of the Heart in COVID-19 Recovery through Cardiac Autonomic Analysis. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1397. [PMID: 37629687 PMCID: PMC10456477 DOI: 10.3390/medicina59081397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/15/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023]
Abstract
Background and Objectives: Analyzing the cardiac autonomic function in COVID-19 patients can provide insights into the impact of the virus on the heart's regulatory mechanisms and its recovery. The autonomic nervous system plays a crucial role in regulating the heart's functions, such as heart rate, blood pressure, and cardiac output. This study aimed to investigate the impact of COVID-19 on heart rate variability (HRV) during a 6-min walk test (6MWT). Materials and Methods: The study included 74 participants, consisting of 37 individuals who had recovered from mild to moderate COVID-19 and 37 healthy controls. The study assessed heart rate variability (HRV) and blood pressure both before and after a 6-min walk test (6MWT). Results: The study found significant differences in a few time domains (SDNN and pNN50) and all frequency domain measures, whereas there were no significant differences in demographic characteristics or blood pressure between COVID-19-recovered individuals and healthy controls at rest. There were significant 6MWT effects on average HR, time-domain (SDNN and pNN50) measures of HRV, and all frequency domain measures of HRV. A significant group × 6MWT interaction was found for SDNN, pNN50, total power, Ln total power, LF, HF, Ln LF, Ln HF, and LF nu. Conclusions: Cardiac Autonomic analysis through HRV is essential to ensure the continued health and well-being of COVID-19 survivors and to minimize the potential long-term impacts of the disease on their cardiovascular system. This suggests that HRV analysis during the recovery phase following exercise could serve as a valuable tool for evaluating the physiological effects of COVID-19 and monitoring the recovery process.
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Affiliation(s)
- Sakshi Garg
- Department of Physiotherapy, School of Allied Health Sciences, Manav Rachna International Institute and Studies (MRIIRS), Faridabad 121001, India; (S.G.); (P.S.); (A.S.); (I.A.)
- Department of Physiotherapy, School of Allied Health Sciences, MVN University, Palwal 121102, Haryana, India
| | - Preeti Saini
- Department of Physiotherapy, School of Allied Health Sciences, Manav Rachna International Institute and Studies (MRIIRS), Faridabad 121001, India; (S.G.); (P.S.); (A.S.); (I.A.)
| | - Moattar Raza Rizvi
- School of Allied Health Sciences, Manav Rachna International Institute and Studies (MRIIRS), Faridabad 121001, India;
| | - Fuzail Ahmad
- Respiratory Care Department, College of Applied Sciences, Almaarefa University, Diriya 13713, Riyadh, Saudi Arabia;
| | - Mohammed AlTaweel
- Respiratory Care Department, College of Applied Sciences, Almaarefa University, Diriya 13713, Riyadh, Saudi Arabia;
| | - Zia Ul Sabah
- Department of Medicine, College of Medicine, King Khalid University, Abha 61413, Saudi Arabia; (Z.U.S.); (H.K.D.)
| | - Humayoun K. Durrani
- Department of Medicine, College of Medicine, King Khalid University, Abha 61413, Saudi Arabia; (Z.U.S.); (H.K.D.)
| | | | - Mohamed K. Seyam
- Department of Physical Therapy & Health Rehabilitation, College of Applied Medical Sciences, Majmaah University, Almajmaah 15431, Saudi Arabia;
| | - Ankita Sharma
- Department of Physiotherapy, School of Allied Health Sciences, Manav Rachna International Institute and Studies (MRIIRS), Faridabad 121001, India; (S.G.); (P.S.); (A.S.); (I.A.)
| | - Irshad Ahmad
- Department of Physiotherapy, School of Allied Health Sciences, Manav Rachna International Institute and Studies (MRIIRS), Faridabad 121001, India; (S.G.); (P.S.); (A.S.); (I.A.)
| | - Sara Al Marzoogi
- Respiratory Care Department, College of Applied Sciences, Almaarefa University, Diriya 13713, Riyadh, Saudi Arabia;
| | - Mohammad A. Shaphe
- Department of Physical Therapy, Faculty of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia; (M.A.S.); (S.U.)
| | - Shadab Uddin
- Department of Physical Therapy, Faculty of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia; (M.A.S.); (S.U.)
| | - Irshad Ahmad
- Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61413, Saudi Arabia;
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Kumari A, Itagi ABH, Rukadikar CA, D A, Naik BN, Juhi A, Naik S, Dipankar SP. Effect of COVID-19 on Stress and Biomarkers: An Exploratory Cross-Sectional Study. Cureus 2023; 15:e35702. [PMID: 37016651 PMCID: PMC10066816 DOI: 10.7759/cureus.35702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Background Anxiety and stress in COVID-19 lead to continual pro-inflammatory cytokine activity resulting in excessive inflammation. Levels of different bio indices of COVID-19 may predict clinical outcomes and the severity of COVID-19 disease and may correlate with anxiety and stress levels. Objectives To measure the level of anxiety in COVID-19 patients using the coronavirus anxiety scale (CAS) as an assessment of psychological stress. To measure the levels of blood biomarkers and biochemical and hematological markers of inflammation in COVID-19. To record and measure the indices of short-term HRV in COVID-19 patients to assess their physiological and psychological stress levels. To determine the relationship between anxiety scores, levels of laboratory indices (blood biomarkers), and HRV parameters across mild, moderate and severe cases of COVID-19. Material and method A total of 300 COVID-19 patients aged between 18 and 55 years were included. A questionnaire-based CAS was used to assess anxiety levels. Short-term HRV was recorded to measure stress. Blood biomarkers: Biochemical and hemato-cytological markers of inflammation were measured. Statistical analyses were performed using the SPSS software version 20.0. Results Anxiety and stress increased with the severity of COVID-19. A positive correlation was detected between anxiety and serum ferritin, IL-6, MCV, and MCH levels, and a negative correlation between the corona anxiety score and RBC count. The increase in the severity of COVID-19 showed elevated levels of WBC count, neutrophil%, platelet count, neutrophil/lymphocyte ratio, serum ferritin, D-dimer, C-reactive protein, procalcitonin, interleukin-6, and lactate dehydrogenase, and decreased lymphocyte and monocyte percentages. The increase in the severity of COVID-19 decreased lymphocyte, monocyte, and eosinophil counts. Conclusion The Corona Anxiety Scale and heart rate variability can be used as complementary tools to index COVID-19-related anxiety and stress. An association exists between immune dysregulation and heart rate variability, which can be used to predict the inflammatory response and prognosis of COVID-19.
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