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Exercise testing is widely used all over the world to assess
functional capacity in athletes, healthy subjects and patients.
According to recent surveys, the interest in ergometry is still
growing in almost all fields of medicine, especially in private
practice. Furthermore, there has been an exponential growth in the
number of publications on exercise testing in the last years.
Several consensus and task force conferences have dealt with
exercise testing and published recommendations on standardization
and guidelines in ergometry. These factors have, in combination,
initiated an upsurge in research and clinical use of exercise
testing. At the 6th International Seminar on Ergometry the latest
findings and advances in ergometry were discussed. Reviews and
results of the congress covering a wide range of features in
exercise testing are presented in this book. The editors hope that
this book will make a substantial contribution to our knowledge
regarding exercise testing and will help physicians to
appropriately evaluate exercise testing in healthy and diseased
subjects. The editors are indepted to Miss I. Baumgartner and Mr.
W. Reith for their effort in typing and preparing the manuscripts.
The editors are greatful to Springer-Verlag for the close
cooperation and for their expertise in publishing the present
volume. N. Bachl T. Graham H. Lallgen Contents W. Hollmann The
Anaerobic Threshold as a Tool in Medicine ........... 1 L. Prokop
Genetic Influences on Cardiovascular Capacity ............... 12 1)
ARRHYTHMIA AND EXERCISE . . . * . . * . * * . * . 19 . . .
The measurement oflactate is straightforward and reliable. The
sampling is normal ly dependable, although discrepancies between
sample sites can occur if samples are drawn during other than
steady state conditions or when blood flow to the site is low.
Comparison of data between subjects should consider intra- and
interindividu al variation. Interpretation of the significance of
blood or even a muscle lactate concentration is extremely difficult
and neither can be assumed to reflect rates of lactate release or
production. Lactate metabolism appears to be very significant in
short-term, high intensity work lasting a few seconds, but the
exact role remains to be established. Blood lactate and the
pulmonary aspects of anaerobic threshold are not necessarily
causally related and the significance of anaerobic threshold as a
metabolic measure remains obscure. There are numerous examples of
changes in blood or muscle lac tate independent of oxygen
availability, and factors such as H+ concentration ap pear to play
an important, although undefined, role in regulating lactate
production and/or release."
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