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Isocapnic hyperpnea training improves performance in competitive male runners
- J. Leddy, A. Limprasertkul, C. Lundgren
- MedicineEuropean Journal of Applied Physiology
- 23 January 2007
The effects of voluntary isocapnic hyperpnea (VIH) training on ventilatory system and running performance were studied in 15 male competitive runners and improvements cannot be ascribed to improved blood oxygen delivery to muscle or to psychological factors.
Respiratory muscle training improves swimming endurance in divers
- J. Wylegala, D. Pendergast, L. Gosselin, D. Warkander, C. Lundgren
- BiologyEuropean Journal of Applied Physiology
- 1 February 2007
Results from this study indicate that respiratory muscle fatigue is a limiting factor for underwater swimming performance, and that targeted respiratory muscle training (RRMT > ERMT) improves respiratory muscle and underwater swim performance.
The physiology and pathophysiology of human breath-hold diving.
This is a brief overview of physiological reactions, limitations, and pathophysiological mechanisms associated with human breath-hold diving. Breath-hold duration and ability to withstand compression…
The underwater environment: cardiopulmonary, thermal, and energetic demands.
Immersion in water alters the cardio-endocrine-renal axis as there is an immediate translocation of blood to the heart and a slower autotransfusion of fluid from the cells to the vascular compartment, which result in an increase in stroke volume and cardiac output.
Alveolar gas composition before and after maximal breath-holds in competitive divers.
The data suggest that the athletes rely primarily on the hypoxic stimuli, probably in interaction with CO2 stimuli to determine when to end breath-holds, as well as recording breaking-point end-tidal PO2 in humans.
Effects of inspiratory and expiratory resistance in divers' breathing apparatus.
Inspiratory breathing resistance caused greater changes than expiratory resistance in end-tidal CO2, dyspnea scores, maximum voluntary ventilation, and respiratory duty cycle and it was found that an inspiratory resistance inducing a volume-averaged pressure of 1.5 kPa is not acceptable.
Whole-body plethysmography, does it measure tidal volume of small animals?
- G. Enhorning, S. V. van Schaik, C. Lundgren, I. Vargas
- Environmental ScienceCanadian journal of physiology and pharmacology
- 1 October 1998
It is concur with previous investigators that the plethysmograph pressure reflects alveolar pressure and that fluctuations cannot be explained by changes in temperature and humidity.
Intravascular Fluorocarbon-stabilized Microbubbles Protect Against Fatal Anemia in Rats
Extrapolation from these experiments indicates that less than 1 ml of DDFP, in emulsion-form, could provide for the resting oxygen consumption of an adult person, and suggests various therapeutic uses of the emulsion.
Resistive respiratory muscle training improves and maintains endurance swimming performance in divers.
- P. Lindholm, J. Wylegala, D. Pendergast, C. Lundgren
- MedicineUndersea & hyperbaric medicine : journal of the…
- 1 May 2007
RRMT 3 or 5 days per week can be recommended to divers to improve both respiratory and fin swimming endurance, effects which can be maintained with RRMT twice weekly.
Effects of different types of respiratory muscle training on exercise performance in runners.
There were no statistically significant differences in pulmonary functions and V(o2)max post-RRMT and post-VIHT compared to pre-RMT, and the inspiratory muscle strength had improved following RRMT.