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Clinical Physiology (Oxford, England)|August 19, 1999
Differences in autonomic modulation of heart rate during arm and leg exerciseM P Tulppo, T H Mäkikallio, R T Laukkanen, et al.
The American Journal of Physiology|March 5, 1998
Vagal modulation of heart rate during exercise: effects of age and physical fitnessM P Tulppo, T H Mäkikallio, T Seppänen, et al.
The American Journal of Physiology|April 8, 1998
Heart rate dynamics during accentuated sympathovagal interactionM P Tulppo, T H Mäkikallio, T Seppänen, et al.
The American Journal of Physiology|July 1, 1996
Quantitative beat-to-beat analysis of heart rate dynamics during exerciseM P Tulppo, T H Mäkikallio, T E Takala, et al.
Scandinavian Journal of Medicine & Science in Sports|September 13, 2013
Altered relationship between R-R interval and R-R interval variability in endurance athletes with overtraining syndromeA M Kiviniemi, M P Tulppo, A J Hautala, et al.
Clinical Physiology (Oxford, England)|April 25, 2001
Changes in cardiac autonomic regulation after prolonged maximal exerciseA Hautala, M P Tulppo, T H Mäkikallio, et al.
Autonomic & Autacoid Pharmacology|December 24, 2003
Effect of cardiac vagal outflow on complexity and fractal correlation properties of heart rate dynamicsJ Penttilä, A Helminen, T Jartti, et al.
American Journal of Physiology. Heart and Circulatory Physiology|February 17, 2001
Effects of exercise and passive head-up tilt on fractal and complexity properties of heart rate dynamicsM P Tulppo, R L Hughson, T H Mäkikallio, et al.
Clinical Physiology (Oxford, England)|September 29, 2001
Effects of pharmacological adrenergic and vagal modulation on fractal heart rate dynamicsM P Tulppo, T H Mäkikallio, T Seppänen, et al.
Clinical Physiology (Oxford, England)|June 15, 2001
Time domain, geometrical and frequency domain analysis of cardiac vagal outflow: effects of various respiratory patternsJ Penttilä, A Helminen, T Jartti, et al.
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