The blood flow regulation in vertebral system during dynamic exercise in humans remains unclear. We examined the blood flow responses in both the internal carotid artery (QICA) and vertebral artery (QVA) simultaneously during graded dynamic exercise by Doppler ultrasound to evaluate whether cerebrovascular responses to exercise were similar. In the semisupine position, 10 young women performed ...

Cyclooxygenase products accumulate in statically contracting muscles to stimulate group III and IV afferents. The role played by these products in stimulating thin fiber muscle afferents during dynamic exercise is unknown. Therefore, in decerebrated cats, we recorded the responses of 17 group III and 12 group IV triceps surae muscle afferents to dynamic exercise, evoked by stimulation of the me...

During exercise, dynamic hyperinflation-induced intrinsic positive end-expiratory pressure (PEEPi) and decreased dynamic lung compliance (CL,dyn) of patients with chronic obstructive pulmonary disease (COPD) increase the elastic work of inspiration (Wi) more than would be predicted from the increase in tidal volume (VT). This contributes significantly to their exertional breathlessness. In 10 s...

We sought to understand the nature of control mechanisms involved in the adaptation of exercising muscle hyperemia. Seven subjects performed rhythmic dynamic forearm exercise under two exercise conditions: small step 1 [step increase from rest to 40% peak forearm vascular conductance (FVC), in ml.min(-1).100 mmHg-1] for 5 min followed by small step 2 (further increase to 80% peak FVC for 5 min)...

although thallium-201 exercise scintigraphy has been established for the detection of myocardial ischemia and viability, little is known regarding the myocardial thallium-201 kinetics during angioplasty. herein, we report a 77-year old man with angina pectoris, in whom serial myocardial imaging after a single dose of thallium-201 was helpful in identifying not only the culprit lesion and myocar...

[Purpose] The present study was conducted to investigate whether ankle proprioceptive exercise affects static and dynamic balance in normal adults. [Subjects and Methods] Twenty-eight normal adults were recruited to measure their static and dynamic balancing before and after the proprioceptive exercise. A subject stood with bare feet on the round supporting platform of the device for measuring ...

[Purpose] The purpose of this study was to investigate the therapeutic effects of virtual reality-based ankle exercise on the dynamic balance, muscle tone, and gait ability of stroke subjects. [Subjects and Methods] Twenty persons who were in the chronic stroke subjects of this study and they were included and assigned to two groups: experimental (VRAE; Virtual Reality-based Ankle Exercise grou...

BACKGROUND Dynamic hyperinflation due to increased respiratory frequency during exercise is associated with limitations in exercise capacity in patients with moderately severe chronic obstructive pulmonary disease (COPD). OBJECTIVES The present study assessed whether the manually paced tachypnea (MPT) test, sitting at rest, induces dynamic hyperinflation correlating with exercise capacity in ...

OBJECTIVE To compare the effects of lumbar stabilization exercises and lumbar dynamic strengthening exercises on the maximal isometric strength of the lumbar extensors, pain severity and functional disability in patients with chronic low back pain (LBP). METHODS Patients suffering nonspecific LBP for more than 3 months were included prospectively and randomized into lumbar stabilization exerc...