Post‐Exercise Heart Rate Recovery is Impaired in Anabolic Steroids Users

AbstractBackground:A correlation between adiposity and post-exercise autonomic regulation has been established in overweight and obese children. However, little information exists about this link in non-obese youth. The main purpose of this cross-sectional study was to describe the relationship between body fat percentage (BFP) and heart rate recovery after exercise [post-exercise heart rate (PEHR)], a marker of autonomic regulation, in normal-weight children and adolescents.Methods:We evaluated the body composition of 183 children and adolescents (age 15.0±2.3 years; 132 boys and 51 girls) who performed a maximal graded exercise test on a treadmill, with the heart rate monitored during and immediately after exercise.Results:A strong positive trend was observed in the association between BFP and PEHR (r=0.14; p=0.06). Hierarchical multiple regression revealed that our model explained 18.3% of the variance in PEHR (p=0.00), yet BFP accounted for only 0.9% of the variability in PEHR (p=0.16). The evaluation of the contribution of each independent variable revealed that only two variables made a unique statistically significant contribution to our model (p<0.01), with age contributing 38.7% to our model (p=0.00) while gender accounted for an additional 25.5% (p=0.01). Neither BFP (14.4%; p=0.16) nor cardiorespiratory endurance (5.0%, p=0.60) made a significant unique contribution to the model.Conclusions:Body fatness seems to poorly predict PEHR in our sample of non-obese children and adolescents, while non-modifiable variables (age and gender) were demonstrated as strong predictors of heart rate recovery. The low amount of body fat reported in non-obese young participants was perhaps too small to cause disturbances in autonomic nervous system regulation.

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Post-exercise Heart Rate Recovery In Youth Is Not Influenced By Adiposity

Medicine & Science in Sports & Exercise ◽

10.1249/01.mss.0000402121.90747.bf ◽

2011 ◽

Vol 43 (Suppl 1) ◽

pp. 763

Author(s):

Daniela A. Rubin ◽

Diobel Mendoza ◽

Daniel A. Judelson ◽

Susan J. Clark ◽

Michelle Moutappa

Keyword(s):

Heart Rate ◽

Heart Rate Recovery ◽

Exercise Heart Rate ◽

Post Exercise

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The Effect of Routine Gymnastics toward Post-Exercise Heart Rate Recovery in Elderly

Indonesian Journal of Cardiology ◽

10.30701/ijc.v1i1.1025 ◽

2020 ◽

Author(s):

Arie Ramdhiani Mahassa ◽

Mohammad Rizki Akbar ◽

Sri Yusnita Irda Sari

Keyword(s):

Heart Rate ◽

Heart Rate Recovery ◽

Exercise Duration ◽

Exercise Heart Rate ◽

Autonomic Nerves ◽

Cross Sectional ◽

Post Exercise ◽

Age Related ◽

Significant Difference ◽

Minute Post

Background: Age-related change in autonomic nerves covers parasympathetic function decrease that hampers heart rate (HR) control. The effective attempt to improve autonomic nervous function for elderly is routine exercise, however exercise duration among elderly is not always standardized. This study is aimed to compare the effect of different exercise duration to post-exercise Heart Rate Recovery (HRR) between two elderly groups with the same frequency, intensity, type criteria of routine exercise. Method: Method was cross-sectional study which compared exercise duration of standardized group (3x90 minutes/week) and unstandardized group (3x30 minutes/week). Group 1 was elders with standardized duration from Healthy Heart Club and Group 2 was elders who take unstandardized duration from Elderly Home in Bandung city. Each group consisted of 43 elders and data were collected in July-August 2019. After one hour of medium intensity exercise, all respondents were examined for resting HR (HRrest), maximum HR (HRmax), one minute post-exercise HR, and four minutes post-exercise HR. HRR was obtained by subtracting HRmax by one minute post-exercise HR and normal if > 12 bpm. Analysis data was done by SPSS with Mann-Whitney U Test, Fisher Chi Square and Logistic regression. Result: Most of respondents were 60-69 years old and female. Respondents in unstandardized group were more low education, hypertension and smoking. The HRrest of both groups was categorized as normal but increased greater (30x/min) in standardized group. The result showed a significant difference in comparation of median HRR (p=0.001) and number of normal and abnormal HRR (p=0.001) between both groups. Gender, smoking and standardized duration of exercise associated with abnormality of HRR, elders who take unstandardized duration have 12.7 times risk to get abnormal HRR. Conclusion: Routine exercise for elderly is recommended in standardized duration with minimal 150 minutes per week in order to increase post-exercise HRR.

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Perturbations of Adjuvant Chemotherapy on Cardiovascular Responses and Exercise Tolerance in Patients with Early-Stage Breast Cancer

Biology ◽

10.3390/biology10090910 ◽

2021 ◽

Vol 10 (9) ◽

pp. 910

Author(s):

Hsin-Fu Lin ◽

Ching-Ying Tseng ◽

Toby Mündel ◽

Yi-Yuan Lin ◽

Chung-Chi Lin ◽

...

Keyword(s):

Breast Cancer ◽

Heart Rate ◽

Exercise Tolerance ◽

Early Stage ◽

Heart Rate Recovery ◽

Cardiovascular Responses ◽

Early Stage Breast Cancer ◽

Exercise Heart Rate ◽

Post Exercise ◽

Before And After

Background: Adjuvant chemotherapies are commonly used for treating early-stage breast cancer. However, whether chemotherapeutic regimens affect exercise tolerance and cardiovascular responses remains unclear. Therefore, we investigated the effects of receiving CAF and AC-T on exercise tolerance and cardiovascular responses in patients with early-stage breast cancer. Methods: Thirty-four patients with breast cancer (age: 44 ± 1 years; stage I-II) received either CAF (n = 15) or AC-T (n = 19), depending on clinical decisions. Their step-exercise tolerance and cardiovascular responses were assessed before and after chemotherapy. Results: After chemotherapy, there were no differences in baseline measurements between patients receiving CAF or AC-T. The increases in resting heart rate (RHR) of those receiving AC-T was significantly greater than that of those receiving CAF. CAF and AC-T did not result in increased pulse wave velocity (PWV), yet the subendocardial viability ratio (SEVR) in patients receiving AC-T was significantly lower than the baseline. Greater change in post-exercise heart rate recovery (recovery HR) after chemotherapy was observed in those who had received AC-T; the Recovery HR in AC-T patients was significantly higher during post-exercise period than that in CAF patients. Conclusions: AC-T chemotherapy increases RHR and impairs exercise tolerance after chemotherapy more than CAF. Moreover, AC-T also lowers myocardial perfusion more than CAF after chemotherapy.

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