Heart Rate Responses to Two Field Exercise Tests by Adolescents and Young Adults with Down Syndrome

1995 ◽  
Vol 12 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Ana Marie Varela ◽  
Kenneth H. Pitetti
Keyword(s):  
Heart Rate ◽  
Young Adults ◽  
Down Syndrome ◽  
Treadmill Exercise ◽  
Field Tests ◽  
Treadmill Exercise Test ◽  
Exercise Tests ◽  
The Mean ◽  
Shuttle Run ◽  
Field Exercise

The purpose of this study was twofold: (a) to determine the reflexive HR responses of 10 young adults (mean age = 18.6 ± 3 years) with Down syndrome (DS) to short, intense field tests, and (b) to compare the HR responses of the subjects in this study to previous studies that reported peak HR responses of young adults with DS during maximal treadmill exercise tests. Each subject performed a 300-yd (274-m) run and the Leger and Lambert shuttle run twice on separate days. Heart rates were recorded by telemetry every 50 yd (45.7 m) during the 300-yd run and every minute for the shuttle run. The mean HRs seen throughout both field tests were equal to or higher than peak HRs previously reported. The peak HRs observed were 10 to 30 bpm higher than those peak HRs previously reported for persons with DS of similar age during a maximal treadmill exercise test. The results of this study suggest that low peak HRs may not be specific or unique to the condition of DS.

scholarly journals Monitoring Performance in Show Jumping Horses: Validity of Non-specific and Discipline-specific Field Exercise Tests for a Practicable Assessment of Aerobic Performance

2022 ◽  
Vol 12 ◽  
Author(s):  
Katharina Kirsch ◽  
Christina Fercher ◽  
Stephanie Horstmann ◽  
Caroline von Reitzenstein ◽  
Julia Augustin ◽  
...  
Keyword(s):  
Heart Rate ◽  
Random Effect ◽  
Lactate Concentration ◽  
Field Tests ◽  
Aerobic Performance ◽  
Subjective Rating ◽  
Exercise Tests ◽  
Specific Field ◽  
Show Jumping ◽  
Field Exercise

Show jumping is a highly specialized equestrian discipline that requires technical skill but also power and fitness. Monitoring the horses’ aerobic performance is therefore essential in order to verify whether the training has induced the desired cardiovascular and muscular adaptations. This study therefore aimed at evaluating the validity of non-specific and discipline-specific field exercise tests for objective evaluation of aerobic performance in show jumpers. For this purpose, data obtained from horses competing at Junior and Young Rider level during show jumping competitions as well as field exercise tests were retrospectively analyzed. The effect of the level of difficulty, the horses’ age, the penalty score and the horses’ previous level of performance on blood lactate concentrations after show jumping competitions (100 observations in 49 horses) was evaluated by linear mixed effects models (horse as random effect). Estimated marginal means significantly increased from 140 (4.1 mmol/L) to 150 cm (5.2 mmol/L) classes (P = 0.02). Furthermore, post-exercise lactate values significantly increased with the horses’ age (P = 0.001). Another group of 12 horses performed a standardized incremental field exercise test on a track (SETtrack), a standardized show jumping course (SETcourse) and a standardized grid exercise (SETgrid) each on three consecutive days. Indices of aerobic performance, derived from the SETtrack [velocity at a heart rate of 140 bpm (V140) and at a lactate concentration of 2 mmol/L (VLa2)] were highly correlated with heart rate (V140: r = −0.75, P = 0.005; VLa2: r =−0.66, P = 0.02) and lactate (V140: r = −0.73, P = 0.02; VLa2: r = −0.72, P = 0.02) in response to SETcourse as well as heart rate during SETgrid (V140: r = −0.73, P = 0.02; VLa2: r = −0.76, P = 0.01). Subjective rating of muscular fatigue was significantly correlated to the mean heart rate during SETcourse (r = −0.64, P = 0.05) and SETgrid (r = −0.74, P = 0.02) but not to the aerobic indices calculated from SETtrack. Besides non-specific incremental field tests, performance monitoring in show jumpers should therefore also include discipline-specific tests that more closely reflect the internal load induced by show jumping competitions.

Attenuated responses to sympathoexcitation in individuals with Down syndrome

2003 ◽  
Vol 94 (6) ◽  
pp. 2158-2165 ◽  
Author(s):  
Bo Fernhall ◽  
Mari Otterstetter
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Down Syndrome ◽  
Autonomic Dysfunction ◽  
Treadmill Exercise ◽  
Cold Pressor ◽  
Normal Weight ◽  
Maximal Heart Rate ◽  
Isometric Handgrip ◽  
Blood Pressure Responses

This study evaluated blood pressure and heart rate responses to exercise and nonexercise tasks as indexes of autonomic function in subjects with and without Down syndrome (DS). Twenty-four subjects (12 with and 12 without DS) completed maximal treadmill exercise, isometric handgrip (30% of maximum), and cold pressor tests, with heart rate and blood pressure measurements. Maximal heart rate and heart rate and blood pressure responses to the isometric handgrip and cold pressor tests were reduced in subjects with DS ( P < 0.05). Both early (first 30 s) and late (last 30 s) responses were reduced. Obesity did not appear to influence the results, as both obese and normal-weight subjects with DS exhibited similar responses, and controlling for body mass index did not alter the results between controls and subjects with DS. Individuals with DS, without congenital heart disease, exhibit reduced heart rate and blood pressure responses to isometric handgrip exercise and cold pressor testing, consistent with autonomic dysfunction. Autonomic dysfunction may partially explain chronotropic incompetence observed during maximal treadmill exercise in individuals with DS.

scholarly journals Diagnostic Value Of Qtc Dispersion And And Qt Dispersion Ratio Changes On Stress Test In Detecting Significance Of Coroner Lesion In Stable Angina Pectoris Patients

2019 ◽  
Vol 40 (2) ◽  
Author(s):  
Putri Yeantesa ◽  
Hauda El Rasyid ◽  
Masrul Syafri ◽  
Ricvan Dana Nindrea
Keyword(s):  
Angina Pectoris ◽  
Treadmill Exercise ◽  
Stress Test ◽  
Qt Dispersion ◽  
Stable Angina Pectoris ◽  
Treadmill Exercise Test ◽  
Exercise Tests ◽  
Coronary Lesions ◽  
Treadmill Stress Test ◽  
Treadmill Stress

Background : Treadmill exercise test remains an important method and often used in the initial evaluation of patients with chest pain and can be a filter for more expensive invasive diagnostic. Increased QT dispersion (QTD) occurs because of the heterogeneity of ventricular repolarization because transient ischaemia during a treadmill stress test can be a marker of coronary artery disease (CAD) and can improve the accuracy of exercise tests to diagnose CAD, but this parameter is still controversial.   Method : This is an analytic observational approach with a cross sectional study. Data was taken retrospectively at the Heart Center Installation at RSUP Dr. M. Djamil Padang, from March to April 2019, stable angina pectoris patient with a positive treadmill stress test who underwent coronary angiography as the subject. Bivariate analysis was performed on changes in QTcD (∆QTcD) and QTdR (∆QTdR) variables on the significance of coronary lesions by the chi-square method, after which a diagnostic test was based on receiver operating curve (ROC) analysis.   Study Result : There were 122 subjects and found that older age, male and smoking were more common in groups with significant coronary lesions. Cut off point for ∆QTcD is ≥13 ms with a sensitivity of 87,1% and specificity 85,2% and AUC 95,1%, while ∆QTdR ≥5.5% with sensitivity 85,7% and specificity 81,9% and AUC 90,5% are related to significancy of coronary lesion. Obtained subjects with significant lesions generally had a value of ∆QTcD ≥ 13 ms (p <0.001) and ∆QTdR ≥ 5.5% (p <0.001).   Conclusion : The use of ∆QTdR dan ∆QTdR parameters as ECG variables, which are easily obtained in evaluating stress tests, can improve the diagnostic accuracy of exercise tests. In addition, evaluation of ∆QTdR dan ∆QTdR can provide information about the incidence of CAD. Keywords : ∆QTcD, ∆QTdR, Treadmill Exercise Test, Coronary Lession Significancy  

scholarly journals The total heart beats per 24 hours by ambulatory electrocardiography and the changes of heart rate by treadmill exercise test in sick sinus syndrome.

1988 ◽  
Vol 52 (2) ◽  
pp. 139-148 ◽  
Author(s):  
AKIHIKO SHIMIZU ◽  
MASAHIKO FUKATANI ◽  
KOWEI KITANO ◽  
MUNEO TANIGAWA ◽  
CHIAKI UEYAMA ◽  
...  
Keyword(s):  
Heart Rate ◽  
Exercise Test ◽  
Sick Sinus Syndrome ◽  
Treadmill Exercise ◽  
Treadmill Exercise Test ◽  
Ambulatory Electrocardiography
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