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Priyadarsini N, Likhitha D, Ramachandran M, Behera KK. Impaired Cardiovagal Activity as a Link Between Hyperglycemia and Arterial Stiffness in Adults With Type 2 Diabetes Mellitus Among an Eastern Indian Population: A Cross-sectional Study. Can J Diabetes 2024; 48:147-154. [PMID: 38142036 DOI: 10.1016/j.jcjd.2023.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 11/27/2023] [Accepted: 12/12/2023] [Indexed: 12/25/2023]
Abstract
OBJECTIVES Cardiac autonomic neuropathy (CAN) is one of the most common yet overlooked complications of type 2 diabetes mellitus (T2DM). Individuals with T2DM with CAN have a 5-fold higher rate of cardiovascular morbidity and mortality. The presence of CAN in T2DM could potentially lead to arterial stiffness. However, only sparse data are available suggesting any association between autonomic dysfunction and arterial stiffness in T2DM. METHODS We recruited 80 people with T2DM and 74 healthy controls for our study. Heart rate variability (HRV) testing was performed to assess autonomic function. Assessment of arterial stiffness was done by measuring the brachial pulse wave velocity (baPWV) and augmentation index (AI). RESULTS The time-domain parameters were significantly decreased (p<0.001) and frequency-domain parameters, such as total power and high-frequency band expressed as a normalized unit, were found to be significantly reduced in people with T2DM (p<0.001). Both baPWV and AI were significantly higher in people with T2DM compared with healthy controls (p<0.001). We observed a moderate correlation between standard deviation of normal to normal interval (SDNN) and baPWV (r=-0.437, p=0.002) and AI (r=-0.403, p=0.002). A multiple linear regression model showed an association between SDNN and arterial stiffness parameters, such as baPWV and AI, which were statistically significant (p<0.05) in a fully adjusted model that included the conventional risk factors for atherosclerosis. CONCLUSIONS Impaired cardiovagal activity is an independent risk factor for the development of arterial stiffness. Incorporation of HRV testing into the diabetes management protocol would have potential benefits for identifying individuals at high risk of developing cardiovascular events. Hence, preventive measures can be taken as early as possible to improve patient outcomes.
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Affiliation(s)
- Nibedita Priyadarsini
- Department of Physiology, All India Institute of Medical Sciences, Bhubaneswar, India
| | - Devineni Likhitha
- Department of Physiology, All India Institute of Medical Sciences, Bhubaneswar, India
| | | | - Kishore Kumar Behera
- Department of Endocrinology, All India Institute of Medical Sciences, Bhubaneswar, India
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Rattaz V, Tissot H, Puglisi N, Razurel C, Epiney M, Favez N. Parental sensitivity, family alliance and infants' vagal tone: Influences of early family interactions on physiological emotion regulation. Infant Ment Health J 2023; 44:741-751. [PMID: 37607042 DOI: 10.1002/imhj.22085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 05/23/2023] [Accepted: 08/06/2023] [Indexed: 08/24/2023]
Abstract
In this study, we investigated the influence of parental sensitivity and family alliance on infants' vagal tone, considered as a physiological indicator of emotion regulation. Studies on mother-infant interactions have shown that vagal tone can be influenced by the quality of the interaction, such as interacting with a sensitive mother. To date, no study has investigated the influence of paternal sensitivity or family alliance on infants' vagal tone. We hypothesized that maternal sensitivity, paternal sensitivity, and family alliance would be associated with infants' vagal tone during dyadic and triadic interactions. We also explored if family alliance would act as a moderator on the association between parental sensitivity and vagal tone and if the sensitivity of both parents would act as a moderator on the association between family alliance and vagal tone. This study took place in Switzerland and included 82 families with their 3-4-month-old infants. Results showed that maternal sensitivity and family alliance were associated with infants' vagal tone, but paternal sensitivity was not. We found no significant moderation effect. However, result tendencies suggested that the contribution of paternal sensitivity to infants' emotion regulation could be influenced by family alliance, whereas maternal sensitivity and family alliance have a unique contribution.
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Affiliation(s)
- Valentine Rattaz
- Faculty of Psychology and Educational Sciences, University of Geneva, Geneva, Switzerland
| | - Hervé Tissot
- Faculty of Psychology and Educational Sciences, University of Geneva, Geneva, Switzerland
- Center for Family Studies, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Nilo Puglisi
- Faculty of Psychology and Educational Sciences, University of Geneva, Geneva, Switzerland
| | - Chantal Razurel
- Department of Midwifery, University of Applied Sciences Western Switzerland, Geneva, Switzerland
| | - Manuella Epiney
- Department of Obstetrics and Gynecology, University of Geneva Hospitals, Geneva, Switzerland
| | - Nicolas Favez
- Faculty of Psychology and Educational Sciences, University of Geneva, Geneva, Switzerland
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Christiani M, Grosicki GJ, Flatt AA. Cardiac-autonomic and hemodynamic responses to a hypertonic, sugar-sweetened sports beverage in physically active men. Appl Physiol Nutr Metab 2021; 46:1189-1195. [PMID: 33761293 DOI: 10.1139/apnm-2021-0138] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hydration practices may confound heart rate variability (HRV) measurements when collected in the pre-training period. We aimed to determine the effects of ingesting a hypertonic, sugar-sweetened sports beverage on HRV and hemodynamic parameters in physically active young men. Fifteen subjects consumed 591 mL of Gatorade (6% carbohydrate, ∼330 mOsmol/kg), 591 mL water, or 10 mL water (control) in random order on separate days following overnight fasting. HRV and hemodynamics were evaluated in 5-min windows immediately before (T1) and 5-10 min (T2), 25-30 min (T3), 40-45 min (T4), and 55-60 min (T5) post-drinking. Root-mean square of successive differences and the standard deviation of normal RR intervals increased post-water intake at all time-points relative to T1 (P < 0.05). No increases were observed post-Gatorade intake, though small effect sizes were noted at T2 and T3 (P > 0.05, ES = 0.27-0.32). Systemic vascular resistance increased at T2 post-Gatorade intake and at T2 and T3 post-water intake (P < 0.05). No interactions were observed for blood pressure measures, stroke volume, or cardiac output. Gatorade does not evoke cardiovascular adjustments to the same magnitude as water. Practitioners should wait at least 45 min to record HRV post-Gatorade intake and >60 min post-water intake. Novelty: Equal volumes of cold water and Gatorade produce inequivalent cardiac-autonomic and hemodynamic responses. HRV responses of greater amplitude and duration were observed following intake of water versus Gatorade. Failure to account for recent fluid intake may result in misinterpretation of autonomic status.
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Affiliation(s)
- Mark Christiani
- Biodynamics and Human Performance Center, Department of Health Sciences and Kinesiology, Georgia Southern University (Armstrong Campus), Savannah, Georgia, USA.,Biodynamics and Human Performance Center, Department of Health Sciences and Kinesiology, Georgia Southern University (Armstrong Campus), Savannah, Georgia, USA
| | - Gregory J Grosicki
- Biodynamics and Human Performance Center, Department of Health Sciences and Kinesiology, Georgia Southern University (Armstrong Campus), Savannah, Georgia, USA.,Biodynamics and Human Performance Center, Department of Health Sciences and Kinesiology, Georgia Southern University (Armstrong Campus), Savannah, Georgia, USA
| | - Andrew A Flatt
- Biodynamics and Human Performance Center, Department of Health Sciences and Kinesiology, Georgia Southern University (Armstrong Campus), Savannah, Georgia, USA.,Biodynamics and Human Performance Center, Department of Health Sciences and Kinesiology, Georgia Southern University (Armstrong Campus), Savannah, Georgia, USA
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Rodríguez-Núñez I, Pontes RB, Romero F, Campos RR. Effects of physical exercise on baroreflex sensitivity and renal sympathetic nerve activity in chronic nicotine-treated rats. Can J Physiol Pharmacol 2020; 99:786-794. [PMID: 33290163 DOI: 10.1139/cjpp-2020-0381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chronic nicotine exposure may increase cardiovascular risk by impairing the cardiac autonomic function. Besides, physical exercise (PE) has shown to improve cardiovascular health. Thus, we aimed to investigate the effects of PE on baroreflex sensitivity (BRS), heart rate variability (HRV), and sympathetic nerve activity (SNA) in chronically nicotine-exposed rats. Male Wistar rats were assigned to four independent groups: Control (treated with saline solution), Control+Ex (treated with saline and submitted to treadmill training), Nicotine (treated with Nicotine), and Nicotine+Ex (treated with nicotine and submitted to treadmill training). Nicotine (1 mg·kg-1) was administered daily for 28 consecutive days. PE consisted of running exercise (60%-70% of maximal aerobic capacity) for 45 min, 5 days per week, for 4 weeks. At the end of the protocol, cardiac BRS, HRV, renal SNA (rSNA), and renal BRS were assessed. Nicotine treatment decreased absolute values of HRV indexes, increased low frequency/high frequency ratio of HRV, reduced the bradycardic and sympatho-inhibitory baroreceptor reflex responses, and reduced the rSNA. PE effectively restored time-domain HRV indexes, the bradycardic and sympatho-inhibitory reflex responses, and the rSNA in chronic nicotine-treated rats. PE was effective in preventing the deterioration of time-domain parameters of HRV, arterial baroreceptor dysfunction, and the rSNA after nicotine treatment.
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Affiliation(s)
- Iván Rodríguez-Núñez
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil.,Departamento de Kinesiología, Facultad de Medicina, Universidad de Concepción, Chile
| | - Roberto B Pontes
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
| | - Fernando Romero
- Programa de Doctorado en Ciencias Médicas, Departamento de Cirugía, Facultad de Medicina, Universidad de La Frontera, Temuco. Chile
| | - Ruy R Campos
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
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Macartney MJ, Notley SR, Herry CL, Sigal RJ, Boulay P, Kenny GP. Effect of exercise-heat acclimation on cardiac autonomic modulation in type 2 diabetes: a pilot study. Appl Physiol Nutr Metab 2020; 46:284-287. [PMID: 33201735 DOI: 10.1139/apnm-2020-0785] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effects of exercise-heat acclimation on heart rate variability (HRV) in individuals with type 2 diabetes (T2D) remains unclear. We assessed electrocardiogram recordings during exercise-heat stress in middle-aged-to-older individuals (50-70 years) with (n = 6) and without (control; n = 8;) T2D, before and after 7 days of exercise-heat acclimation. Exercising heart rate was reduced (control, -9 ± 5 bpm; T2D, -14 ± 9 bpm) yet HRV was not significantly different. Given the negative correlations between diminished HRV and cardiac risk observed in the scientific literature, further research is warranted. Novelty: Our observations indicate that 7 days exercise-heat acclimation may not effectively attenuate the deviation toward reduced overall HRV and unfavourable cardiac autonomic modulation in individuals with T2D.
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Affiliation(s)
- Michael J Macartney
- Centre for Medical and Exercise Physiology, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Sean R Notley
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Christophe L Herry
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON K1H 8L6, Canada
| | - Ronald J Sigal
- Departments of Medicine, Cardiac Sciences and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Pierre Boulay
- Faculty of Physical Activity Sciences, University of Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, ON K1N 6N5, Canada.,Clinical Epidemiology Program, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON K1H 8L6, Canada
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Oliveira CM, Ghezzi AC, Cambri LT. Higher blood glucose impairs cardiac autonomic modulation in fasting and after carbohydrate overload in adults. Appl Physiol Nutr Metab 2020; 46:221-228. [PMID: 32898425 DOI: 10.1139/apnm-2020-0473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
This study aimed to assess whether the blood glucose levels influence cardiac autonomic modulation under fasting and after carbohydrate overload conditions. Participants (n = 108) were separated into lower blood glucose and higher blood glucose groups, based on the median (90.5 mg·dL-1) of fasting glucose assessed. The SD2, SDNN, LF indices, and LF/HF increased, and HF decreased after dextrose overload compared with fasting (p < 0.05). Body mass (78.9 vs 69.7 kg), abdominal circumference (90.2 vs 82.2 cm), systolic (113 vs 108 mm Hg) and diastolic (72 vs 67 mm Hg) blood pressure were higher (p < 0.05) in the higher blood glucose group. Heart rate variability (HRV) indices (SD1: 21.0 vs 26.5; SD2: 76.8: vs 86.1; RMSSD: 28.7 vs 37.5; SDNN: 56.1 vs 62.5 ms; pNN50: 10.6 vs 18.9%, HF: 328.4 vs 506.0; LF: 982.8 vs 1259.0 ms2), and the area under the curve of these indices after dextrose overload were lower in the higher blood glucose group (p < 0.05). Additionally, glycemia after dextrose overload was correlated with HRV indices (ρ = -0.216 to -0.273, p < 0.05). Individuals with higher blood glucose, even in the normality range, showed impairment in the cardiac autonomic modulation both at fasting and after carbohydrate overload. Novelty: Higher fasting blood glucose impairs cardiac autonomic modulation. Carbohydrate overload impairs cardiac autonomic modulation.
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Affiliation(s)
- Caroline Maria Oliveira
- Graduate Program in Nutrition, Foods and Metabolism, Federal University of Mato Grosso, Cuiabá, MT 78060-900, Brazil
| | - Ana Carolina Ghezzi
- Department of Pharmacology, State University of Campinas, Campinas, SP 13083-887, Brazil
| | - Lucieli Teresa Cambri
- Graduate Program in Nutrition, Foods and Metabolism, Federal University of Mato Grosso, Cuiabá, MT 78060-900, Brazil.,Graduate Program in Physical Education, Federal University of Mato Grosso, Cuiabá, MT 78060-900, Brazil
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Trauffler L, Schuller S, Kovacevic A, Tichy A. Establishing reference standards for the vasovagal tonus index in a cohort of healthy French Bulldogs. SCHWEIZ ARCH TIERH 2020; 161:821-829. [PMID: 31782736 DOI: 10.17236/sat00238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
INTRODUCTION The vasovagal tonus index (VVTI), a time-domain indicator of heart rate variability, has been suggested as a diagnostic and prognostic tool in dogs with cardiac disease and heart failure. Brachycephalic breeds tend to have a higher VVTI than non-brachycephalic breeds.11 The objective of this study was to obtain standard VVTI reference values from a representative cohort of healthy French Bulldogs based on a single ECG recording. A second aim of this study was to evaluate the practicability of a VVTI screening in the clinical routine by evaluating repeatability of the VVTI across five successive measurements. In order to determine baseline factors potentially influencing the VVTI, the impact of stress, activity and character as well as sex and neutering status were evaluated. Out of 73 French Bulldogs screened, 60 dogs were considered healthy based on their medical history, physical examination, blood pressure and ECG, and no evidence of congenital or acquired heart disease on echocardiographic examination. The VVTI was calculated based on the variance of 20 R-R intervals and the corresponding HR extrapolated to one minute from the same 20 R-R intervals. In addition, a maximum of five consecutive VVTI values were calculated based on 100 successive R-R intervals recorded from each dog. VVTI values ranged from 5.66 to 11.3 with a mean (standard deviation [SD]) of 8.82 (1.43); the corresponding HR ranged from 78 to 173 bpm with a mean (SD) of 120 (23) bpm. Importantly, VVTI and HR values were negatively correlated (R = 0.689; adjusted R² = 0.466), which must be considered for clinical interpretation of the VVTI. The repeatability across five successive sets of 20 heartbeats was shown (mean intra-individual variability of 6.1%). Stress significantly influenced the VVTI and HR (p < 0.001). The VVTI range established in this study may be used as reference to assess the HRV of presumably healthy brachycephalic dogs at routine health checks. Deviations from the reference may permit the clinician to adapt the schedule and focus of subsequent follow-up investigations.
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Affiliation(s)
- L Trauffler
- Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern
| | - S Schuller
- Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern
| | - A Kovacevic
- Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern
| | - A Tichy
- Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
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Marocolo M, Katayama PL, Meireles A, Barbosa Neto O. Combined effects of exercise training and high doses of anabolic steroids on cardiac autonomic modulation and ventricular repolarization properties in rats. Can J Physiol Pharmacol 2019; 97:1185-1192. [PMID: 31505126 DOI: 10.1139/cjpp-2019-0286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Several studies have reported that high doses of synthetic anabolic androgenic steroids (AAS) can have serious negative effects on health, including the cardiovascular system. The aim of this study was to evaluate the combined effects of AAS and exercise training on ventricular repolarization and cardiac autonomic modulation in rats. Male Wistar rats were allocated into 4 groups: sedentary rats treated with vehicle, sedentary rats treated with nandrolone decanoate, swimming-trained rats treated with vehicle, and swimming-trained rats treated with nandrolone decanoate. Ventricular repolarization was evaluated by electrocardiographic analysis of QT interval and QT dispersion. Cardiac autonomic modulation was assessed by heart rate variability. Our results show that AAS increased QT interval and QT dispersion in sedentary rats treated with nandrolone decanoate as compared to sedentary rats treated with vehicle, indicating AAS-induced ventricular repolarization abnormalities. When rats treated with nandrolone decanoate were subjected to concomitant exercise training, ventricular repolarization was normalized. On the other hand, AAS-induced reduction in cardiac parasympathetic modulation was not prevented by exercise training. In conclusion, AAS produced cardiac autonomic dysfunction and ventricular repolarization disturbances in rats. Combining an exercise training protocol during the AAS treatment attenuated the ventricular repolarization abnormalities and did not prevent cardiac autonomic dysfunction.
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Affiliation(s)
- Moacir Marocolo
- Physiology and Human Performance Research Group, Department of Physiology, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Pedro L Katayama
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University, Araraquara, SP, Brazil
| | - Anderson Meireles
- Physiology and Human Performance Research Group, Department of Physiology, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Octávio Barbosa Neto
- Sport Sciences Department, Federal University of Triangulo Mineiro, Uberaba, MG, Brazil
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Freitas MC, Panissa VLG, Lenquiste SA, Serra FDM, Figueiredo C, Lira FS, Rossi FE. Hunger is suppressed after resistance exercise with moderate-load compared to high-load resistance exercise: the potential influence of metabolic and autonomic parameters. Appl Physiol Nutr Metab 2019; 45:180-186. [PMID: 31505127 DOI: 10.1139/apnm-2019-0086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The purpose of present study was to compare the effects of moderate-load versus high-load resistance exercise (RE) on hunger response, blood lactate, glucose, and autonomic modulation in trained men, and to examine the correlations between these parameters. For this, 11 recreationally resistance-trained males performed 2 randomized trials: moderate-load (6 sets at 70% 1-repetition maximum (1RM) and a 90-s rest interval between sets) and high-load (6 sets at 90% 1RM and a 180-s rest interval between sets) leg-press exercise until movement failure. The subjective rating of hunger was obtained through a visual analog scale. Glucose and lactate concentration were evaluated at rest, immediately after exercise, and 30 min after exercise. Heart rate variability was recorded at baseline and during recovery (until 30 min after exercise) to assess autonomic modulation. The moderate-load condition induced lower subjective hunger ratings than the strength condition immediately after exercise (19.7 ± 16.6 vs 47.3 ± 27.7 mm), 30 min after exercise (33.6 ± 22.9 vs 58.5 ± 29.9 mm), and 60 min after exercise (43.8 ± 26.6 vs 67.8 ± 27.9 mm) (p < 0.05) and lower area under the curve hunger in relation to the high-load condition (p < 0.006). Moderate-load RE presented greater lactate concentration and induced slower heart rate variability recovery in relation to high-load RE (p < 0.05), but no difference was found in glucose, as well as no correlations between any of the variables investigated. In conclusion, moderate-load RE induced lower subjective hunger ratings, slower recovery of the parasympathetic nervous system, and higher lactate concentration in relation to high-load RE, but the metabolic variables were not correlated with hunger suppression.
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Affiliation(s)
- Marcelo Conrado Freitas
- Skeletal Muscle Assessment Laboratory (LABSIM), Department of Physical Education, School of Technology and Sciences, São Paulo State University (UNESP), Presidente Prudente, SP 19060-900, Brazil.,Post-Graduate Program in Movement Sciences, School of Technology and Sciences, São Paulo State University (UNESP), Presidente Prudente, SP 19060-900, Brazil.,Department of Nutrition, University of Western São Paulo (UNOESTE), Presidente Prudente, São Paulo, SP 19050-920, Brazil
| | | | - Sabrina Alves Lenquiste
- Department of Nutrition, University of Western São Paulo (UNOESTE), Presidente Prudente, São Paulo, SP 19050-920, Brazil
| | - Fernanda de Maria Serra
- Post-Graduate Program in Animal Science, Department of Biomedicine, University of Western São Paulo (UNOESTE), Presidente Prudente, SP 19050-920, Brazil
| | - Caique Figueiredo
- Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente, SP 19060-900, Brazil
| | - Fabio Santos Lira
- Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente, SP 19060-900, Brazil
| | - Fabricio Eduardo Rossi
- Immunometabolism of Skeletal Muscle and Exercise Research Group, Federal University of Piauí (UFPI), Teresina, PI 64049-550, Brazil.,Associate Graduate Program in Health Science, Federal University of Piauí (UFPI), Teresina, PI 64049-550, Brazil
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Mariano IM, de Freitas VH, Dechichi JGC, Batista JP, de Souza TCF, Amaral AL, Rodrigues MDL, Carrijo VHV, Puga GM. Isoflavone does not promote additional effects on heart rate variability of postmenopausal women performing combined exercise training: a clinical, controlled, randomized, double-blind study. Appl Physiol Nutr Metab 2019; 45:362-367. [PMID: 31499010 DOI: 10.1139/apnm-2019-0409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of the study was to investigate the effects of ingesting isoflavones associated with combined aerobic and resistance exercise training on heart rate variability (HRV) indices in postmenopausal women. Twenty-eight healthy postmenopausal women performed 10 weeks of combined exercise training associated with isoflavone (n = 16) or placebo (n = 12) supplementation. The RR intervals (RRi) were collected for 20 min using a heart rate monitor. Analysis of HRV was performed in time (mean squared difference of successive RRi (RMSSD), standard deviation of all normal RRi (SDNN), and percentage of adjacent RRi differing by more than 50 ms (pNN50)), frequency (low-frequency percentage (LF%), high-frequency percentage (HF%), and low-/high-frequency ratio (LF/HF)), and nonlinear domains (standard deviation of the instantaneous variability of the beat-to-beat interval (SD1), long-term variability of the continuous RRi (SD2), and their ratio (SD2/SD1)). Student's t test did not show differences between groups in any general baseline characteristic variables. The results of the generalized estimating equation tests did not demonstrate interaction or group effects for any HRV indices. However, the results reported time effects for mean RR (p < 0.001), RMSSD (p = 0.044), and SD1 (p = 0.044), with increases in these indices in response to exercise training. There were no time effects for LF%, HF%, LF/HF, SDNN, pNN50, SD2, or SD2/SD1. In conclusion, isoflavone supplementation did not promote additional effects on HRV indices of postmenopausal women subjected to 10 weeks of combined exercise training. Novelty Combined training improves heart rate variability in postmenopausal women. Isoflavone supplementation did not promote additional effects on heart rate variability in postmenopausal women.
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Affiliation(s)
- Igor Moraes Mariano
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
| | - Victor Hugo de Freitas
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
| | - Juliene Gonçalves Costa Dechichi
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
| | - Jaqueline Pontes Batista
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
| | - Tállita Cristina Ferreira de Souza
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
| | - Ana Luiza Amaral
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
| | - Mateus de Lima Rodrigues
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
| | - Victor Hugo Vilarinho Carrijo
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
| | - Guilherme Morais Puga
- Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil.,Federal University of Uberlandia, R. Benjamin Constant, 1286 - Nossa Sra. Aparecida, Uberlândia, MG 38400-678, Brazil
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Crawford DA, Heinrich KM, Drake NB, DeBlauw J, Carper MJ. Heart rate variability mediates motivation and fatigue throughout a high-intensity exercise program. Appl Physiol Nutr Metab 2019; 45:193-202. [PMID: 31287963 DOI: 10.1139/apnm-2019-0123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
High-intensity exercise interventions are often promoted as a time-efficient public health intervention to combat chronic disease. However, increased physical effort and subsequent fatigue can be barriers to long-term maintenance of high-intensity exercise programs. The purpose of the present study was to determine if heart rate variability (HRV) mediated state traits related to exercise program adherence. Fifty-five healthy men and women (ages 19-35 years) used a commercially available smartphone application to monitor daily HRV status throughout a 6-week high-intensity exercise intervention. Participants reported state motivation to exercise and global physical fatigue immediately prior to each exercise session. Temporary shifts toward increased parasympathetic reactivation (p = 0.030) resulted in significant increases in daily fatigue (p < 0.001) and decreases in motivation to exercise (p = 0.028). Through modulation of exercise volume, in response to these temporary shifts in HRV, these effects were reversed (p < 0.001) via increased parasympathetic withdrawal (p = 0.018). For the first time, these data demonstrate a mediating effect of HRV on adherence-related trait states throughout a high-intensity exercise program. Applied strategies, such as appropriately timed exercise volume moderation, may be able to leverage this effect and help facilitate long-term exercise program maintenance. Novelty These data establish a link between expected shifts in HRV throughout high-intensity exercise programs with motivation to participate and physical fatigue. Modulation of training volume, in response to these shifts, can optimize adherence-related behavioral responses during high-exercise programs.
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Affiliation(s)
- Derek A Crawford
- School of Nutrition, Kinesiology and Psychological Science, University of Central Missouri, Warrensburg, MO 64093, USA
| | - Katie M Heinrich
- Functional Intensity Training Laboratory, Department of Kinesiology, Kansas State University, Manhattan, KS 66506, USA
| | - Nicholas B Drake
- Applied Physiology Laboratory, Department of Health, Human Performance, & Recreation, Pittsburg State University, Pittsburg, KS 66762, USA
| | - Justin DeBlauw
- Functional Intensity Training Laboratory, Department of Kinesiology, Kansas State University, Manhattan, KS 66506, USA
| | - Michael J Carper
- Applied Physiology Laboratory, Department of Health, Human Performance, & Recreation, Pittsburg State University, Pittsburg, KS 66762, USA
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Blackman AO, Sobral Neto J, Lima ML, Rodrigues TMA, Gomes OM. Assessment and clinical relevance of the dynamic parameters of ventricular repolarization in patients with grade I left ventricular diastolic dysfunction 1. Can J Physiol Pharmacol 2019; 97:577-580. [PMID: 30676775 DOI: 10.1139/cjpp-2018-0507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Imbalance in ventricular repolarization parameters are related to increased risk of severe arrhythmia and sudden cardiac death. There is limited research regarding markers to detect patients at risk in this early stage. We aimed to assess the influence of grade I left ventricular diastolic dysfunction on repolarization parameters in asymptomatic patients. Ambulatory patients with grade I left ventricular diastolic dysfunction were studied and compared with a control group. We assessed the QT dispersion circadian variation, heart rate variability in the time and frequency domains, and dynamics of QT using a 12-lead Holter. In the diastolic dysfunction group, 8 (30%) patients had QT dispersion > 80 ms. One (3.8%) patient presented premature ventricular complex > 10/h. The comparison between the 2 groups showed that the difference between the standard deviation of normal-to-normal intervals and low frequency power in both groups was statistically significant. We therefore conclude that increased parameters of ventricular repolarization and depressed heart rate variability reflect an imbalance in autonomic responses in patients with grade I left ventricular diastolic dysfunction without cardiovascular symptoms, enabling the identification of patients that are at a higher risk for cardiovascular events.
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Affiliation(s)
- Antoinette Oliveira Blackman
- a Instituto Cardiovascular São Francisco de Assis - Hospital Servcor, Belo Horizonte, MG, Brazil.,b Centro de Avaliação Cardiológica de Brasília - Centrocard, Brasília, DF, Brazil.,c Faculdade de Medicina, Uniceub, Brasília, DF, Brazil
| | - José Sobral Neto
- b Centro de Avaliação Cardiológica de Brasília - Centrocard, Brasília, DF, Brazil
| | - Melchior Luiz Lima
- a Instituto Cardiovascular São Francisco de Assis - Hospital Servcor, Belo Horizonte, MG, Brazil
| | | | - Otoni Moreira Gomes
- a Instituto Cardiovascular São Francisco de Assis - Hospital Servcor, Belo Horizonte, MG, Brazil
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Dartora DR, Irigoyen MC, Casali KR, Moraes-Silva IC, Bertagnolli M, Bader M, Santos RAS. Improved cardiovascular autonomic modulation in transgenic rats expressing an Ang-(1-7)-producing fusion protein. Can J Physiol Pharmacol 2017; 95:993-998. [PMID: 28459154 DOI: 10.1139/cjpp-2016-0557] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Angiotensin-(1-7) counterbalances angiotensin II cardiovascular effects. However, it has yet to be determined how cardiovascular autonomic modulation may be affected by chronic and acute elevation of Ang-(1-7). Hemodynamics and cardiovascular autonomic profile were evaluated in male Sprague-Dawley (SD) rats and transgenic rats (TGR) overexpressing Ang-(1-7) [TGR(A1-7)3292]. Blood pressure (BP) was directly measured while cardiovascular autonomic modulation was evaluated by spectral analysis. TGR received A-779 or vehicle and SD rats received Ang-(1-7) or vehicle and were monitored for 5 h after i.v. administration. In another set of experiments with TGR, A-779 was infused for 7 days using osmotic mini pumps. Although at baseline no differences were observed, acute administration of A-779 in TGR produced a marked long-lasting increase in BP accompanied by increased BP variability (BPV) and sympathetic modulation to the vessels. Likewise, chronic administration of A-779 with osmotic mini pumps in TGR increased heart rate, sympathovagal balance, BPV, and sympathetic modulation to the vessels. Administration of Ang-(1-7) to SD rats increased heart rate variability values in 88% accompanied by 8% of vagal modulation increase and 18% of mean BP reduction. These results show that both acute and chronic alteration in the Ang-(1-7)-Mas receptor axis may lead to important changes in the autonomic control of circulation, impacting either sympathetic and (or) parasympathetic systems.
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Affiliation(s)
- Daniela Ravizzoni Dartora
- a Cardiology Institute of Rio Grande do Sul/University Foundation of Cardiology, Porto Alegre, Rio Grande do Sul, Brazil
| | - Maria-Claudia Irigoyen
- a Cardiology Institute of Rio Grande do Sul/University Foundation of Cardiology, Porto Alegre, Rio Grande do Sul, Brazil.,b Heart Institute (InCor), University of São Paulo Medical School, São Paulo, São Paulo, Brazil
| | - Karina Rabello Casali
- a Cardiology Institute of Rio Grande do Sul/University Foundation of Cardiology, Porto Alegre, Rio Grande do Sul, Brazil.,c Federal University of São Paulo (UNIFESP), Science and Technology Institute (ICT), São José dos Campos, São Paulo, Brazil
| | - Ivana C Moraes-Silva
- b Heart Institute (InCor), University of São Paulo Medical School, São Paulo, São Paulo, Brazil
| | | | - Michael Bader
- e Max-Delbruck Center of Molecular Medicine (MDC), Berlin-Buch, Germany
| | - Robson A S Santos
- a Cardiology Institute of Rio Grande do Sul/University Foundation of Cardiology, Porto Alegre, Rio Grande do Sul, Brazil.,f National Institute of Science and Technology in Nanobiopharmaceutics, Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Rannelli LA, MacRae JM, Mann MC, Ramesh S, Hemmelgarn BR, Rabi D, Sola DY, Ahmed SB. Sex differences in associations between insulin resistance, heart rate variability, and arterial stiffness in healthy women and men: a physiology study. Can J Physiol Pharmacol 2016; 95:349-355. [PMID: 28099042 DOI: 10.1139/cjpp-2016-0122] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diabetes confers greater cardiovascular risk to women than to men. Whether insulin-resistance-mediated risk extends to the healthy population is unknown. Measures of insulin resistance (fasting insulin, homeostatic model assessment, hemoglobin A1c, quantitative insulin sensitivity check index, glucose) were determined in 48 (56% female) healthy subjects. Heart rate variability (HRV) was calculated by spectral power analysis and arterial stiffness was determined using noninvasive applanation tonometry. Both were measured at baseline and in response to angiotensin II infusion. In women, there was a non-statistically significant trend towards increasing insulin resistance being associated with an overall unfavourable HRV response and increased arterial stiffness to the stressor, while men demonstrated the opposite response. Significant differences in the associations between insulin resistance and cardiovascular physiological profile exist between healthy women and men. Further studies investigating the sex differences in the pathophysiology of insulin resistance in cardiovascular disease are warranted.
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Affiliation(s)
- Luke Anthony Rannelli
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada
| | - Jennifer M MacRae
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,b Alberta Kidney Disease Network, 1403-29th St. NW, C210, Calgary, AB T2N 2T9, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
| | - Michelle C Mann
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
| | - Sharanya Ramesh
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
| | - Brenda R Hemmelgarn
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,b Alberta Kidney Disease Network, 1403-29th St. NW, C210, Calgary, AB T2N 2T9, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada.,d Institute for Public Health, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada
| | - Doreen Rabi
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada.,d Institute for Public Health, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada
| | - Darlene Y Sola
- b Alberta Kidney Disease Network, 1403-29th St. NW, C210, Calgary, AB T2N 2T9, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
| | - Sofia B Ahmed
- a Faculty of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB T2N 4N1, Canada.,b Alberta Kidney Disease Network, 1403-29th St. NW, C210, Calgary, AB T2N 2T9, Canada.,c Libin Cardiovascular Institute of Alberta, 1403-29th St. NW, Calgary, AB T2N 2T9, Canada
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