scholarly journals The exercise pressor response to indoor rock climbing

2020 ◽  
Vol 129 (2) ◽  
pp. 404-409
Author(s):  
Nigel A. Callender ◽  
Peter W. Hart ◽  
Girish M. Ramchandani ◽  
Parminder S. Chaggar ◽  
Andrew J. Porter ◽  
...  

This case study provides original data on the exercise pressor response to indoor rock climbing and associated training exercises through the use of an indwelling femoral arterial catheter. Our subjects exhibited systolic/diastolic blood pressures that exceeded values often reported during upper-limb resistance exercise. Our data extend the understanding of the cardiovascular stress associated with indoor rock climbing.

2020 ◽  
Vol 2 (1) ◽  
pp. 84-91
Author(s):  
Chanda Grace Chisunka ◽  
◽  
Gibson Sijumbila ◽  
Fastone Goma ◽  
◽  
...  

Background: Dynamic exercises are known to elicit hemodynamic changes such as an increase in arterial blood pressure and heart rate. Zumba and ZOCA are part of a fast growing group of dance fitness programmes designed to provide a cardiovascular dynamic workout. Despite their growing popularity, very few studies have been done to provide knowledge regarding the hemodynamic changes associated with these exercises. Methods: Case study in which 27 females took part in either a Zumba or ZOCA class. Using digital blood pressure monitors, recordings of blood pressure and heart rate were taken, firstly, before commencement of the exercise, secondly, after 30 minutes after exercise and thirdly, at the end of the class.Results: Mean baseline blood pressures were 118 (SD = 14) mmHg and 77 (SD = 7) mmHg, systolic and diastolic blood pressures, respectively. After 30 minutes of dancing, mean systolic blood pressure increased to 130 (SD = 19) mmHg (p˂ 0.05) while diastolic blood pressureonly rose to an average of 80 (SD = 8) mmHg (p˃ 0.05). At the end of the class (after the cool down phase) mean systolic blood pressure reduced to 109 (SD = 13) mmHg (p˂0.05) while diastolic blood pressure reduced to 74(SD = 12) mmHg (p˂ 0.05). Conclusions: Zumba and ZOCA elicited significant hemodynamic changes that can be attributed to these exercises stimulating the cardiovascular regulatory mechanisms (e.g central command and exercise-pressor) sufficiently and hence resulting in autonomic adjustmentsthat were concurrent with effective dynamic exercise. Keywords: Blood Pressure, Heart Rate, Aerobic, Dance Exercise


Author(s):  
Ian Mark Greenlund ◽  
Carl A. Smoot ◽  
Jason R. Carter

K-complexes are a key marker of non-rapid eye movement sleep (NREM), specifically during stages II sleep. Recent evidence suggests the heart rate responses to a K-complexes may differ between men and women. The purpose of this study was to compare beat-to-beat blood pressure responses to K-complexes in men and women. We hypothesized that the pressor response following a spontaneous K-complex would be augmented in men compared to women. Ten men (Age: 23 ± 2 years, BMI: 28 ± 4 kg/m2) and ten women (Age: 23 ± 5 years, BMI: 25 ± 4 kg/m2) were equipped with overnight finger plethysmography and standard 10-lead polysomnography. Hemodynamic responses to a spontaneous K-complex during stable stage II sleep were quantified for 10 consecutive cardiac cycles, and measurements included systolic arterial pressure (SAP), diastolic arterial pressure (DAP), and heart rate. K-complex elicited greater pressor responses in men when blood pressures were expressed as SAP (cardiac cycle × sex: p = 0.007) and DAP (cardiac cycle × sex: p = 0.004). Heart rate trended to be different between men and women (cardiac cycle × sex: p = 0.078). These findings suggest a divergent pressor response between men and women following a spontaneous K-complex during normal stage II sleep. These findings could contribute to sex-specific differences in cardiovascular risk that exist between men and women.


2017 ◽  
Vol 5 ◽  
Author(s):  
Maria F. Canizares ◽  
Jairo J. Rios Roque ◽  
Gabriel Ramos Zelaya ◽  
Michelle A. James
Keyword(s):  

2007 ◽  
Vol 29 (3) ◽  
pp. 321-346 ◽  
Author(s):  
M. Calnan ◽  
D. Wainwright ◽  
C. O’Neill ◽  
A. Winterbottom ◽  
C. Watkins
Keyword(s):  

1974 ◽  
Vol 6 (2) ◽  
pp. 185-189 ◽  
Author(s):  
G L Gaile

A technique developed by Casetti, King, and Odland (Casetti et al., 1971) for testing growth-center hypotheses is analyzed and found to be sound in principle, but requiring modification in certain specifics. Refinements and modifications relative to problems of scale, ‘center-specificity’, directionality, and spatial-temporal resolution are explained and demonstrated through empirical reanalysis of Casetti et al.'s original data, and also a case study of intraurban Milwaukee as a growth-center analog.


2019 ◽  
Vol 50 (4) ◽  
pp. 1459-1480 ◽  
Author(s):  
Joshua Tschantret

AbstractWhy do unthreatening social groups become targets of state repression? Repression of lesbian, gay, bisexual and transgender (LGBT) people is especially puzzling since sexual minorities, unlike many ethnic minorities, pose no credible violent challenge to the state. This article contends that revolutionary governments are disproportionately oppressive toward sexual minorities for strategic and ideological reasons. Since revolutions create domestic instability, revolutionaries face unique strategic incentives to target ‘unreliable’ groups and to demonstrate an ability to selectively punish potential dissidents by identifying and punishing ‘invisible’ groups. Moreover, revolutionary governments are frequently helmed by elites with exclusionary ideologies – such as communism, fascism and Islamism – which represent collectivities rather than individuals. Elites adhering to these views are thus likely to perceive sexual minorities as liberal, individualistic threats to their collectivist projects. Statistical analysis using original data on homophobic repression demonstrates that revolutionary governments are more likely to target LGBT individuals, and that this effect is driven by exclusionary ideologues. Case study evidence from Cuba further indicates that the posited strategic and ideological mechanisms mediate the relationship between revolutionary government and homophobic repression.


PM&R ◽  
2014 ◽  
Vol 6 (8) ◽  
pp. S118
Author(s):  
Qiang Lin ◽  
Dongfeng Huang ◽  
Yurong Mao ◽  
Bryan O’Young
Keyword(s):  

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