Regulation of the ventilation at the beginning of muscular exercise

The Thermosensitivity of the Hypothalamus and Thermoregulation in Mammals

“…Hammel et al (1963a, b) have also suggested that the 'set-point' of temperature regulation is influenced by both thermal and non-thermal stimuli, while Beaumont & Bullard (1963) attribute the rapid increase in sweating in man when he starts to work at a high ambient temperature to a non-thermal stimulus. They concur with Torreli & Brandi (1961) who showed that the irradiation of descending motor impulses to the centre is probably involved in the control of sweating during exercise. A central interaction between thermal and non-thermal stimuli may account for the effects of baroreceptor and chemoreceptor stimulation upon shivering in the cold-exposed cat, demonstrated by Mott (1963).…”

Ventilatory Control Dynamics During Muscular Exercise in Man

“…hyperpneic response in this phase as representing a conditioned phenomenon (6,88). Perhaps the strongest argument against corticogenesis in l stems from the observation of Dejours and his colleagues that the characteristics of the 41 ventilatory response to passive leg exercise in man were unaffected by light general anesthesia (33).…”

The effect of treadmill speed on ventilation at the start of exercise in man.

“…DISCUSSION These results show that the initial changes in ventilation at the start of exercise are related to the frequency of limb movements and not to the work load expressed as oxygen uptake. Such a relationship could have resulted from a number of causes other than a physiological response to exercise, such as anticipation or learning (Torelli & Brandi, 1961, 1964Whipp & Wasserman, 1970) and the startling effect (Goode, Duffin, Miller, Romet, Chant & Ackles, 1975) The anticipation of the load by the volunteer could only be made for the inclined slope of E2, and otherwise the loads were presented randomly and starting at a time which was unknown to the volunteer. Learning was analysed by looking for any trends in the response for a particular exercise with the dates of the experimental trials.…”