The Effects of Low-Intensity Resistance Exercise on Cardiac Autonomic Function and Muscle Strength in Obese Postmenopausal Women

2019 ◽  
Vol 27 (6) ◽  
pp. 855-860
Author(s):  
Alexei Wong ◽  
Arturo Figueroa
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Body Composition ◽  
Muscle Strength ◽  
Resistance Exercise ◽  
Postmenopausal Women ◽  
Control Group ◽  
Sympathovagal Balance ◽  
Low Intensity ◽  
Increased Risk

The present study examined the effects of a 12-week low-intensity resistance exercise training (LIRET) regimen on heart rate variability, strength, and body composition in obese postmenopausal women. Participants were randomly assigned to 12 weeks of either LIRET (n = 10) or nonexercising control group (n = 10). Heart rate variability, leg muscle strength, and body composition were measured before and after 12 weeks. There were significant decreases (p < .05) in sympathovagal balance (LnLF/LnHF) and sympathetic tone (nLF), as well as significant increases (p < .05) in parasympathetic tone (nHF) and strength following LIRET compared with no changes after control. There were no significant changes in body composition after LIRET or control. LIRET may be an effective therapeutic intervention for improving sympathovagal balance and strength in obese postmenopausal women. As obese postmenopausal women are at increased risk of developing cardiovascular diseases and physical disability, they could potentially benefit from LIRET.

scholarly journals Transcutaneous Electrical Stimulation of Acupoints Changes Body Composition and Heart Rate Variability in Postmenopausal Women with Obesity

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Li-Wei Chien ◽  
Miao-Hsiang Lin ◽  
Hsueh-Yu Chung ◽  
Chi-Feng Liu
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Body Composition ◽  
Waist Circumference ◽  
Postmenopausal Women ◽  
Body Fat ◽  
Control Group ◽  
Percentage Body Fat ◽  
Frequency Domain Methods ◽  
Experimental Group

This study aimed to evaluate the effect of transcutaneous electric acupoint stimulations (TEAS) on body composition and heart rate variability (HRV) in postmenopausal women with obesity. In this prospective study, 49 postmenopausal women were recruited in Taiwan. Body composition was used as a screening test for obesity (percentage body fat > 30%, waist circumference > 80 cm). The experimental group (n= 24) received TEAS treatment 30 min twice per week for 12 weeks at the Zusanli (ST 36) and Sanyinjiao (SP 6) acupoints. The control group (n= 25) did not receive any intervention. The study of HRV was analyzed by time (standard deviation of the normal-to-normal (NN) intervals (SDNN) and square root of the mean squared differences of successive NN intervals (RMSSD) indices) and frequency domain methods. Power spectral components were obtained at low (LF) and high (HF) frequencies. Body composition and HRV values were measured at the 4th, 8th, and 12th weeks. A total of 40 subjects completed this study. Waist circumference and percentage body fat in the experimental group (n= 20) were significantly less than those of the control group (n= 20) at the 8th and 12th weeks (allP< .05). Additionally, at the same time points, percentage lean body mass in the experimental group was significantly greater than that in the control group (P< .05). SDNN values increased significantly at the 4th and 8th weeks when compared with the control group (allP< .05). At 12 weeks, SDNN value was not significantly different from that of the control group (P= .105). TEAS treatment improves body composition, and has a transient effect on the HRV in postmenopausal women with obesity.

Heart Rate Variability And Respiratory Muscle Strength In Patients With Type Ii Diabetes Practicing Pilates: A Randomized Clinical Trial

2021 ◽  
Vol 17 ◽  
Author(s):  
Samara Sousa Vasconcelos Gouveia ◽  
Guilherme Pertinni de Morais Gouveia ◽  
Leydnaya Maria Souza ◽  
Bruno Cunha da Costa ◽  
Gustavo Henrique Melo Sousa ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Muscle Strength ◽  
Normal Distribution ◽  
Randomized Clinical Trial ◽  
Respiratory Muscle ◽  
Control Group ◽  
Respiratory Muscle Strength

Purpose: This study aimed to analyze the effect of a Pilates protocol on respiratory muscle strength and heart rate variability (HRV) in patients with type 2 diabetes. Method: A randomized clinical trial (RBR-2gc2qj) was conducted with a type 2 diabetic target population. Patients practiced the Pilates protocol for 8 weeks, with two visits per week. The variables tested were maximum inspiratory pressure (MIP), maximum expiratory pressure (MEP), and HRV (time and frequency domains). All variables were tested for normal distribution. Using SPSS 21.0, analysis of variance was performed for variables with normal distribution, and the Wilcoxon and Friedman tests were used for variables that did not show a normal distribution, with a 5% significance level. Results: Forty-four participants were included in the study (intervention group: 22; control group: 22; mean age: 61.23 ± 8.49 years), most of whom were female (77.3%), married or in a consensual union (59.1%), had complete literacy (31.8%), and had an average body mass index of 26.96 ± 4.35 kg/m2. There were no significant differences in MIP and MEP before and after the protocol between the intervention and control groups. Regarding HRV, there were significant differences in autonomic modulation, especially between the moments before and during exercise and between the moments during and after exercise; however, it was not possible to determine which system (sympathetic or parasympathetic) is most involved in these changes. Conclusion: The exercise protocol based on the Pilates method did not alter respiratory muscle strength but promoted changes in HRV, especially between the moments before and during exercise and during and after exercise.

Controlled 5-mo aerobic training improves heart rate but not heart rate variability or baroreflex sensitivity

2000 ◽  
Vol 89 (5) ◽  
pp. 1825-1829 ◽  
Author(s):  
Antti Loimaala ◽  
Heikki Huikuri ◽  
Pekka Oja ◽  
Matti Pasanen ◽  
Ilkka Vuori
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Exercise Training ◽  
High Intensity ◽  
Baroreflex Sensitivity ◽  
Aerobic Training ◽  
Control Group ◽  
Resting Heart Rate ◽  
Endurance Time ◽  
Low Intensity

Endurance-trained athletes have increased heart rate variability (HRV), but it is not known whether exercise training improves the HRV and baroreflex sensitivity (BRS) in sedentary persons. We compared the effects of low- and high-intensity endurance training on resting heart rate, HRV, and BRS. The maximal oxygen uptake and endurance time increased significantly in the high-intensity group compared with the control group. Heart rate did not change significantly in the low-intensity group but decreased significantly in the high-intensity group (−6 beats/min, 95% confidence interval; −10 to −1 beats/min, exercise vs. control). No significant changes occurred in either the time or frequency domain measures of HRV or BRS in either of the exercise groups. Exercise training was not able to modify the cardiac vagal outflow in sedentary, middle-aged persons.

scholarly journals Resting heart rate variability in regular yoga practitioners - A cross-sectional study

2020 ◽  
Vol 4 (2) ◽  
pp. 12-17
Author(s):  
Selvakumar Subash ◽  
Manikandan Sathiyaseelan ◽  
Dayanalakshmi Ramachandran
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Cross Sectional Study ◽  
Control Group ◽  
Cross Sectional ◽  
Non Invasive ◽  
Yoga Group ◽  
Increased Risk ◽  
Resting Heart Rate Variability ◽  
Yoga Practitioners

Heart rate variability (HRV) is a useful and powerful non-invasive tool for quantitative assessment of cardiac autonomic function. Recent studies have shown that low heart rate variability is an indication of increased risk for cardiac diseases and sudden cardiac death. Yoga has been associated with improved cardio-respiratory performance. Thirty male regular yoga practitioners doing yoga for more than 3 years, age between 25-45 years (yoga group) and 30 male non-yoga practitioners, age-matched (control group) were included. A computerized Niviqure ECG system with HRV software was used for heart rate variability recording. Our results show that frequency-domain parameters like LF power, LF n.u, and LF/HF ratio were significantly lower in yoga group compared to control group. Time-domain parameters like mean RR, NN50, pNN50 were significantly higher in yoga group compared to control group. We conclude that the yoga increases heart rate variability by optimizing the autonomic functions, which is a good indicator of cardiac autonomic activity during rest.

scholarly journals Effect of alternate nostril breathing on cardio respiratory parameters and muscle strength among rotating shift workers

2021 ◽  
Vol 17 (2) ◽  
pp. 320-325
Author(s):  
Kavitha Ukkirapandian ◽  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Muscle Strength ◽  
Tertiary Care ◽  
Night Shift ◽  
Control Group ◽  
Care Hospital ◽  
Shift Workers ◽  
Respiratory Parameters ◽  
Increased Risk

Night shifts work in particular is the most frequent reasons for circadian rhythm disruption and subsequent psychological and physiological disturbances, especially increased risk of cardiovascular and respiratory ailments compared to daytime workers. Alternate nostril breathing for about 15 minutes was known to have effect over cardiac, respiratory parameters and muscle strength. Hence aim is of interest to assess the effects of alternate nostril breathing (ANB) on cardiorespiratory parameters and muscle strength among the rotating shift workers in the tertiary care hospital. This observational study was carried out in the department of Physiology after getting institutional ethical committee clearance. Around 140 rotating night shift workers of both sex of age 25-40 years with normal BMI and 140 non-shift workers age, sex and BMI matched were selected as study and control group respectively. Heart rate, blood Pressure, respiratory rate, peak expiratory flow rate, respiratory endurance, respiratory burst test, muscle strength and fatigue were recorded before and after 15 minutes of ANB. Shift workers were found to have significantly altered systolic (P=0.000) and diastolic (P=0.002) blood pressure and heart rate (P= 0.010) compared to non-shift workers. All the cardiorespiratory parameters and muscle strength, fatigue was found to be significantly (P< 0.05) altered after ANB between both shift and non- shift workers. ANB can be used as a therapeutic module among the shift workers, to maintain their sound health and to improve their performance in the night duty.

scholarly journals Effect of alternate nostril breathing on cardio respiratory parameters and muscle strength among rotating shift workers

2021 ◽  
Vol 17 (2) ◽  
pp. 320-330
Author(s):  
Karthika Priyadharshini Udaykumar ◽  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Muscle Strength ◽  
Tertiary Care ◽  
Night Shift ◽  
Control Group ◽  
Care Hospital ◽  
Shift Workers ◽  
Respiratory Parameters ◽  
Increased Risk

Night shifts work in particular is the most frequent reasons for circadian rhythm disruption and subsequent psychological and physiological disturbances, especially increased risk of cardiovascular and respiratory ailments compared to daytime workers. Alternate nostril breathing for about 15 minutes was known to have effect over cardiac, respiratory parameters and muscle strength. Hence aim is of interest to assess the effects of alternate nostril breathing (ANB) on cardiorespiratory parameters and muscle strength among the rotating shift workers in the tertiary care hospital. This observational study was carried out in the department of Physiology after getting institutional ethical committee clearance. Around 140 rotating night shift workers of both sex of age 25-40 years with normal BMI and 140 non-shift workers age, sex and BMI matched were selected as study and control group respectively. Heart rate, blood Pressure, respiratory rate, peak expiratory flow rate, respiratory endurance, respiratory burst test, muscle strength and fatigue were recorded before and after 15 minutes of ANB. Shift workers were found to have significantly altered systolic (P=0.000) and diastolic (P=0.002) blood pressure and heart rate (P= 0.010) compared to non-shift workers. All the cardiorespiratory parameters and muscle strength, fatigue was found to be significantly (P< 0.05) altered after ANB between both shift and non- shift workers. ANB can be used as a therapeutic module among the shift workers, to maintain their sound health and to improve their performance in the night duty.

Effects of resistance training of moderate intensity on heart rate variability, body composition, and muscle strength in healthy elderly women

2016 ◽  
Vol 12 (3) ◽  
pp. 389-395 ◽  
Author(s):  
Bruno Bavaresco Gambassi ◽  
Bruno Rodrigues ◽  
Daniele Jardim Feriani ◽  
Fabiano de Jesus Furtado Almeida ◽  
Bismarck Ascar Sauaia ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Body Composition ◽  
Resistance Training ◽  
Muscle Strength ◽  
Elderly Women ◽  
Moderate Intensity ◽  
Healthy Elderly

scholarly journals Effects of lower limb resistance exercise on muscle strength, physical fitness, and metabolism in pre-frail elderly patients: a randomized controlled trial

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xiaoxing Lai ◽  
Lin Bo ◽  
Hongwei Zhu ◽  
Baoyu Chen ◽  
Zhao Wu ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Resistance Exercise ◽  
Frail Elderly ◽  
Lower Limb ◽  
Intervention Group ◽  
Control Group ◽  
Walking Test ◽  
Sit To Stand ◽  
Femoris Muscle ◽  
Activity Energy

Abstract Background Few studies examined interventions in frail elderly in China, while the awareness of applying interventions to prevent frailty in pre-frail elderly is still lacking. This study aimed to explore the effects of lower limb resistance exercise in pre-frail elderly in China. Methods This was a randomized controlled trial of patients with pre-frailty. The control group received routine care, while the exercise group received a 12-week lower limb resistance exercise based on routine care. The muscle strength in the lower limbs, physical fitness, and energy metabolism of the patients was evaluated at admission and after 12 weeks of intervention. Results A total of 60 pre-frail elderly were included in this study. The patients were divided into the exercise group (n = 30) and control group (n = 30) by random grouping. There were 17 men and 13 women aged 65.3 ± 13.4 in the exercise group, and 15 men and 15 women aged 67.6 ± 11.9 years in the control groups. The Barthel index was 80.3 ± 10.6 and 85.1 ± 11.6, respectively. The characteristics of the two groups were not significantly different before intervention (all p > 0.05). The results of repeated measurement ANOVA showed that there was statistically significant in crossover effect of group * time (all p < 0.05), that is, the differences of quadriceps femoris muscle strength, 6-min walking test, 30-s sit-to-stand test, 8-ft “up & go” test, daily activity energy expenditure and metabolic equivalent between the intervention group and the control group changed with time, and the variation ranges were different. The main effects of time were statistically significant (all p < 0.05), namely, femoris muscle strength, 6-min walking test, 30-s sit-to-stand test, 8-ft “up & go” test, daily activity energy expenditure and metabolic equivalent of the intervention group and the control group were significantly different before and after intervention. The main effects of groups were statistically significant (p < 0.05), namely, femoris muscle strength, 6-min walking test, 30-s sit-to-stand test, daily activity energy expenditure and metabolic equivalent before and after intervention were significantly different between the intervention group and the control group, while there was no significant differences in 8-ft “up & go” test between groups. Conclusion Lower limb resistance exercise used for the frailty intervention could improve muscle strength, physical fitness, and metabolism in pre-frail elderly. Trial registration ChiCTR, ChiCTR2000031099. Registered 22 March 2020, http://www.chictr.org.cn/edit.aspx?pid=51221&htm=4

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