CARDIOVASCULAR CONTROL RESPONSES IN HIGH INTENSITY EXERCISE STRESS TESTS

2021 ◽  
Vol 27 (7) ◽  
pp. 678-681
Author(s):  
Qingzhong Xu ◽  
Meihua Su ◽  
Degang Hu
Keyword(s):  
Heart Rate ◽  
High Intensity ◽  
Cardiovascular Response ◽  
High Intensity Exercise ◽  
Exercise Stress ◽  
Intensity Level ◽  
Saturation Curve ◽  
Blood Oxygen ◽  
Stress Tests ◽  
Level Of Evidence

ABSTRACT Introduction: High intensity exercise is an important factor to achieve the best exercise effect, and is closely related to the patient's safety and rehabilitation. Objective: To investigate the effects of high intensity exercise on cardiovascular response and substance and energy metabolism. Methods: 50 male students at a university were selected. The average age of the subjects was 23 years old. Process of the experiment: Before the experiment, each subject took routine warm-up activities first, then put on the experimental equipment and began to run 100 meters. At the same time, the subjects’ heart rate, blood oxygen parameters and exercise time were recorded. After passing the finish line, a period of heart rate recording and blood oxygen parameters were continued. Results: Anaerobic metabolism was the main activity in the 100m race. The first 7s after the start of the race, there is a non-lactic acid process without oxygen metabolism, and the muscle oxygen saturation curve presents little change. Conclusions: High intensity exercise in sports training and physical exercise can lead to reduced heart rate variability. The increased incidence of various arrhythmias should be based on the actual situation of the movement of the object, and a reasonable arrangement of exercise load intensity. Level of evidence II; Therapeutic studies - investigation of treatment results.

Noninvasive ventilation can modulate heart rate variability during high-intensity exercise in COPD-CHF patients

Heart & Lung ◽  
2021 ◽  
Vol 50 (5) ◽  
pp. 609-614
Author(s):  
Giovana Salgado Baffa ◽  
Cássia da Luz Goulart ◽  
Flávia Rossi Caruso ◽  
Adriana S. Garcia de Araújo ◽  
Polliana Batista dos Santos ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Noninvasive Ventilation ◽  
High Intensity ◽  
High Intensity Exercise

Impact of a combined diet and progressive exercise intervention for overweight and obese children: the B.E. H.I.P. study

2011 ◽  
Vol 36 (4) ◽  
pp. 515-525 ◽  
Author(s):  
Patricia K. Doyle-Baker ◽  
Allison A. Venner ◽  
Martha E. Lyon ◽  
Tak Fung
Keyword(s):  
Heart Rate ◽  
Waist Circumference ◽  
Fat Mass ◽  
High Intensity ◽  
High Intensity Exercise ◽  
Obese Children ◽  
Intervention Programme ◽  
Progressive Exercise ◽  
Exercise Class ◽  
Health Intervention Programme

The Biochemical Evaluation of a Health Intervention Programme (B.E. H.I.P.) investigated the impact of progressive exercise intensity in overweight and obese children. A 5-month prospective randomized crossover design (XA, immediate intervention; OB, control group; XB, delayed intervention, OA, postintervention follow-up) with a 10-week health intervention programme was employed. The intervention utilized a progressive increase in high-intensity exercise (≥75% maximum heart rate) and included 3 nutrition and 2 parent education sessions. Primary analysis was completed with (i) XA versus OB and (ii) all intervention participants (collapsed XA and XB = XAXB). Prepubertal overweight and obese male and female children (n = 27) between 5 and 10 years of age were randomly allocated to XA (n = 16; 11 females; waist circumference = 80.0 ± 10.6 cm) or OB (n = 11; 3 females; waist circumference = 76.6 ± 7.5 cm). The primary variables were heart rate and percent fat mass. All variables, including body composition, habitual activity, and serum lipids, were repeatedly measured for up to a maximum of 7 time points. Energy expenditure was quantitatively measured throughout each exercise class (n = 20). A significantly longer time in the exercise sessions was spent in high-intensity (35.1%–60.0%) versus low- to moderate-intensity (64.9%–40.0%) exercise as the intervention progressed from the first to the last attended exercise class (Fisher exact test, p < 0.0001). The percent fat mass decreased in all intervention participants (–2.2%, p < 0.0001). XA had a greater slope decrease than OB for percent fat mass (p = 0.00051) and triglycerides (p = 0.0467). In conclusion, high-intensity exercise, within a comprehensive health programme that includes nutrition education, improved the lipid and physiological health profiles of obese children.

scholarly journals Exercise training intensity determination in cardiovascular rehabilitation: Should the guidelines be reconsidered?

2019 ◽  
Vol 26 (18) ◽  
pp. 1921-1928 ◽  
Author(s):  
Dominique Hansen ◽  
Kim Bonné ◽  
Toon Alders ◽  
Ann Hermans ◽  
Katrien Copermans ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Heart Rate ◽  
Exercise Intensity ◽  
High Intensity ◽  
Ventilatory Threshold ◽  
Cardiopulmonary Exercise Test ◽  
High Intensity Exercise ◽  
Cardiovascular Rehabilitation ◽  
Correct Determination ◽  
Low Intensity Exercise

Aims In the rehabilitation of cardiovascular disease patients a correct determination of the endurance-type exercise intensity is important to generate health benefits and preserve medical safety. It remains to be assessed whether the guideline-based exercise intensity domains are internally consistent and agree with physiological responses to exercise in cardiovascular disease patients. Methods A total of 272 cardiovascular disease patients without pacemaker executed a maximal cardiopulmonary exercise test on bike (peak respiratory gas exchange ratio >1.09), to assess peak heart rate (HRpeak), oxygen uptake (VO2peak) and cycling power output (Wpeak). The first and second ventilatory threshold (VT1 and VT2, respectively) was determined and extrapolated to %VO2peak, %HRpeak, %heart rate reserve (%HRR) and %Wpeak for comparison with guideline-based exercise intensity domains. Results VT1 was noted at 62 ± 10% VO2peak, 75 ± 10% HRpeak, 42 ± 14% HRR and 47 ± 11% Wpeak, corresponding to the high intensity exercise domain (for %VO2peak and %HRpeak) or low intensity exercise domain (for %Wpeak and %HRR). VT2 was noted at 84 ± 9% VO2peak, 88 ± 8% HRpeak, 74 ± 15% HRR and 76 ± 11% Wpeak, corresponding to the high intensity exercise domain (for %HRR and %Wpeak) or very hard exercise domain (for %HRpeak and %VO2peak). At best (when using %Wpeak) in only 63% and 72% of all patients VT1 and VT2, respectively, corresponded to the same guideline-based exercise intensity domain, but this dropped to about 48% and 52% at worst (when using %HRR and %HRpeak, respectively). In particular, the patient’s VO2peak related to differently elicited guideline-based exercise intensity domains ( P < 0.05). Conclusion The guideline-based exercise intensity domains for cardiovascular disease patients seem inconsistent, thus reiterating the need for adjustment.

Effect of heliox on heart rate kinetics and dynamic hyperinflation during high-intensity exercise in COPD

2010 ◽  
Vol 111 (2) ◽  
pp. 225-234 ◽  
Author(s):  
Pierantonio Laveneziana ◽  
Gabriele Valli ◽  
Paolo Onorati ◽  
Patrizia Paoletti ◽  
Alessandro Maria Ferrazza ◽  
...  
Keyword(s):  
Heart Rate ◽  
High Intensity ◽  
High Intensity Exercise ◽  
Dynamic Hyperinflation ◽  
Rate Kinetics ◽  
Heart Rate Kinetics

Water Intake Accelerates Parasympathetic Reactivation After High-Intensity Exercise

2014 ◽  
Vol 24 (5) ◽  
pp. 489-496 ◽  
Author(s):  
Tiago Peçanha ◽  
Marcelle Paula-Ribeiro ◽  
Edson Campana-Rezende ◽  
Rhenan Bartels ◽  
João Carlos Bouzas Marins ◽  
...  
Keyword(s):  
Heart Rate ◽  
Water Intake ◽  
High Intensity ◽  
Cycle Ergometer ◽  
High Intensity Exercise ◽  
Exercise Session ◽  
Exponential Fitting ◽  
Maximal Heart Rate ◽  
Parasympathetic Reactivation ◽  
Cardiovascular Benefit

It has been shown that water intake (WI) improves postexercise parasympathetic recovery after moderateintensity exercise session. However, the potential cardiovascular benefit promoted by WI has not been investigated after high-intensity exercise.Purpose:To assess the effects of WI on post high-intensity parasympathetic recovery.Methods:Twelve recreationally active young men participated in the study (22 ± 1.4 years, 24.1 ± 1.6 kg.m−2). The experimental protocol consisted of two visits to the laboratory. Each visit consisted in the completion of a 30-min high-intensity [~80% of maximal heart rate (HR)] cycle ergometer aerobic session performing randomly the WI or control (CON, no water consumption) intervention at the end of the exercise. HR and RR intervals (RRi) were continuously recorded by a heart rate monitor before, during and after the exercise. Differences in HR recovery [e.g., absolute heart rate decrement after 1 min of recovery (HRR60s) and time-constant of the first order exponential fitting curve of the HRR (HRRτ)] and in postexercise vagalrelated heart rate variability (HRV) indexes (rMSSD30s, rMSSD, pNN50, SD1 and HF) were calculated and compared for WI and CON.Results:A similar HR recovery and an increased postexercise HRV [SD1 = 9.4 ± 5.9 vs. 6.0 ± 3.9 millisecond, HF(ln) = 3.6 ± 1.4 vs. 2.4 ± 1.3 millisecond2, for WI and CON, respectively; p < .05] was observed in WI compared with CON.Conclusion:The results suggest that WI accelerates the postexercise parasympathetic reactivation after high-intensity exercise. Such outcome reveals an important cardioprotective effect of WI.

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