TY - JOUR
T1 - Rapid increases in ventilation accompany the transition from passive to active movement
AU - Bell, Harold J.
AU - Duffin, James
PY - 2006/6
Y1 - 2006/6
N2 - We used a novel movement transition technique to look for evidence of a rapid onset drive to breathe related to the active component of exercise in humans. Ten volunteers performed the following transitions in a specially designed tandem exercise chair apparatus: rest to passive movement, passive to active movement, and rest to active movement. The transition from rest to active exercise was accompanied by an immediate increase in ventilation, as was the transition from rest to passive leg movement (Δ = 6.06 ± 1.09 l min-1, p < 0.001 and Δ = 3.30 ± 0.57 l min-1, p = 0.002, respectively). When subjects actively assumed the leg movements, ventilation again increased immediately and significantly (Δ = 2.55 ± 0.52 l min-1, p = 0.032). Ventilation at the first point of active exercise was the same when started either from rest or from a background of passive leg movement (p = 1.00). We conclude that the use of a transition from passive to active leg movements in humans recruits a ventilatory drive related to the active component of exercise, and this can be discerned as a rapid increase in breathing.
AB - We used a novel movement transition technique to look for evidence of a rapid onset drive to breathe related to the active component of exercise in humans. Ten volunteers performed the following transitions in a specially designed tandem exercise chair apparatus: rest to passive movement, passive to active movement, and rest to active movement. The transition from rest to active exercise was accompanied by an immediate increase in ventilation, as was the transition from rest to passive leg movement (Δ = 6.06 ± 1.09 l min-1, p < 0.001 and Δ = 3.30 ± 0.57 l min-1, p = 0.002, respectively). When subjects actively assumed the leg movements, ventilation again increased immediately and significantly (Δ = 2.55 ± 0.52 l min-1, p = 0.032). Ventilation at the first point of active exercise was the same when started either from rest or from a background of passive leg movement (p = 1.00). We conclude that the use of a transition from passive to active leg movements in humans recruits a ventilatory drive related to the active component of exercise, and this can be discerned as a rapid increase in breathing.
KW - Exercise
KW - Humans
KW - Passive movements
KW - Ventilation
UR - http://www.scopus.com/inward/record.url?scp=33746870784&partnerID=8YFLogxK
U2 - 10.1016/j.resp.2005.07.008
DO - 10.1016/j.resp.2005.07.008
M3 - Article
C2 - 16153897
AN - SCOPUS:33746870784
VL - 152
SP - 128
EP - 142
JO - Respiratory Physiology and Neurobiology
JF - Respiratory Physiology and Neurobiology
SN - 1569-9048
IS - 2
ER -