نتایج جستجو برای: arm crank ergometry

تعداد نتایج: 71433  

Journal: :Journal of biomechanics 1999
R R Neptune W Herzog

The objective of this research was to use a pedal force decomposition approach to quantify the amount of negative muscular crank torque generated by a group of competitive cyclists across a range of pedaling rates. We hypothesized that negative muscular crank torque increases at high pedaling rates as a result of the activation dynamics associated with muscle force development and the need for ...

Journal: :Journal of sports science & medicine 2004
Mark Loftin Melinda Sothern Barbara Warren John Udall

The purpose of this study was to compare peak cardiorespiratory parameters during treadmill and cycle ergometry in severely overweight youth. Twenty-one participants from the Committed to Kids Pediatric Weight Management program at the Louisiana State University Health Sciences Center volunteered. Participants completed peak treadmill and cycle ergometer tests on separate days. In order to exam...

Journal: :Vascular Health and Risk Management 2008
Sakir Uen Rolf Fimmers Burkhard Weisser Osman Balta Georg Nickenig Thomas Mengden

INTRODUCTION This study compared ST segment depression (ST depression) during cycle ergometry (ergometry) versus simultaneous 24-hour ambulatory blood pressure measurement and electrocardiogram recording (24-h ABPM/ECG) during everyday life. METHODS In a German multicenter study, ergometry and 24-h ABPM/ECG records of 239 hypertensive patients were retrospectively analyzed. ST depression was ...

2016
Davis A. Forman Mark Richards Garrick N. Forman Michael W. R. Holmes Kevin E. Power

The purpose of this study was to examine the influence of neutral and pronated handgrip positions on corticospinal excitability to the biceps brachii during arm cycling. Corticospinal and spinal excitability were assessed using motor evoked potentials (MEPs) elicited via transcranial magnetic stimulation (TMS) and cervicomedullary-evoked potentials (CMEPs) elicited via transmastoid electrical s...

2014
Eric T. Harness

doi: 10.1310/sci2002-147 cycling. Exercise-mediated alterations in BDNF seem to be intensity-dependent, as no change in BDNF was shown during mild exercise versus more intense workloads. In addition, prolactin has been identified as a possible mediator of neuroplasticity in the spinal cord as it serves as a marker of serotonergic activation during exercise. In a previous study, prolactin was in...

2011
Navraj S. Pannu Willem-Jan Waterreus Pavol Skubák Irakli Sikharulidze Jan Pieter Abrahams Rudolf A. G. de Graaff

For its first release in 2004, CRANK was shown to effectively detect and phase anomalous scatterers from single-wavelength anomalous diffraction data. Since then, CRANK has been significantly improved and many more structures can be built automatically with single- or multiple-wavelength anomalous diffraction or single isomorphous replacement with anomalous scattering data. Here, the new algori...

Journal: :Medicine and science in sports and exercise 2010
Aleksandar Tomas Emma Z Ross James C Martin

UNLABELLED Maximal cycling power has been reported to decrease more rapidly when performed with increased pedaling rates. Increasing pedaling rate imposes two constraints on the neuromuscular system: 1) decreased time for muscle excitation and relaxation and 2) increased muscle shortening velocity. Using two crank lengths allows the effects of time and shortening velocity to be evaluated separa...

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