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Time relationships (coordination) between breathing and rhythmical limb movements were analyzed during sinusoidal tracking movements of the forearm in 11 healthy subjects. The tracking rate was varied systematically between 0.1 and 1.0 Hz in 0.1-Hz steps. The aim of the study was to elucidate whether rhythmical tracking movements can entrain breathing, and(More)
We tested the effect of a home-based respiratory muscle endurance training in patients with mild to moderate generalized myasthenia gravis (MG) on Besinger score, lung function and respiratory muscle endurance. Ten patients performed respiratory muscle endurance training in form of normocapnic hyperpnea training at 50-60% of their maximal voluntary(More)
OBJECTIVES The present study was performed to detect the interactions between breathing and the postural motor control of the fingers. A previous study revealed a scattering in the intraindividual motor responses which resembled a grouping. It is hypothesized to result from the influence of breathing. METHODS Torque impulses and torque steps at two(More)
Gap junction channels are essential for intercellular electrical communication in the heart. The most important cardiac gap junction proteins are connexin43 (predominantly) (Cx43), connexin40 (Cx40), and in early developmental stages connexin45. Since catecholamines play an important role in cardiac (patho)physiology, we wanted to elucidate whether(More)
We investigated the coordination between breathing and walking in humans to elucidate whether the coordination degree depends more on metabolic load or on breathing or stride frequencies and whether coordination causes energetic economization expressed by reduction of oxygen uptake (VO2). Eighteen healthy volunteers walked on a treadmill at three load(More)
Coordination of the respiratory rhythm with the rhythm of limb movements has often been observed during rhythmical exercise (e.g. in locomotion). It is usually associated with changes in the respiratory time course, but not in the locomotor rhythm. Therefore, we hypothesised that in walking, the extent of coordination-related changes (CRC) in respiratory(More)
In the present study, we investigated co-ordination of breathing with active horizontal head and eye movements and with passive body turnings. The main purpose was to compare co-ordination with active voluntary and with passive movements. Co-ordination was defined according to the relative phases (RPs) between breathing and additional rhythms. It was(More)
OBJECTIVE In this study we have tested the hypothesis that degradation of collagen by matrix metalloproteinase 2 (MMP-2) precedes the deposition of extracellular matrix (ECM) after long term norepinephrine (NE) treatment. METHODS Female Sprague-Dawley rats received continuous i.v. infusion of NE (0.1 mg/kg.h) for 1, 2, 3, 4 and 14 days. Heart function and(More)
The coordination between breathing and other motor activities usually implies that the respiratory rhythm has become entrained by the rhythm of the simultaneous movement. Our hypothesis was that by increasing the respiratory drive, e.g. by hypercapnia, we would be able to reduce the subordination of breathing to other movements and, on the other hand,(More)
  • B Rassler
  • 2000
The precision of short-term finger tracking flexions has been shown to vary with the respiratory cycle. In the present study, we analysed the mutual effects between breathing and short-term finger tracking movements (SFTM)--both flexions and extensions. Moreover, we investigated the preferred phase relationships between breathing and spontaneous single(More)