Effects of awareness of change in load on ventilatory response during moderate exercise.
This study was designed to determine whether awareness of change in load alters ventilatory response during moderate exercise. Subjects performed two incremental exercise protocols on a cycle ergometer. The load was increased from 1.0 to 1.5kp in steps of 0.1kp every 3min. Subjects were provided true information about the load in the control protocol and untrue information that the load would remain constant in the deception protocol. Slope of ventilation against CO2 output was significantly lower in the deception protocol than control protocol. Integrated EMG (iEMG) and ratings of perceived exertion (RPE) were similar between the two protocols, but awareness of change in load was significantly attenuated by the deception protocol. However, there was no temporal coincidence between awareness and actual change in load. These results suggest that ventilatory response during moderate exercise depends not so much on RPE but mainly on awareness or attention that is closely connected to information detection.
Yunoki
Takahiro
T
Department of Human Developmental Sciences, Faculty of Education, Hokkaido University, Kita-11, Nishi-7, Kita-ku, Sapporo 060-0811, Japan. yunoki@edu.hokudai.ac.jp
Matsuura
Ryouta
R
Arimitsu
Takuma
T
Yamanaka
Ryou
R
Kosugi
Shinji
S
Lian
Chang-Shun
CS
Yano
Tokuo
T
D001364:Awareness / Q000502:physiology*; D002245:Carbon Dioxide / Q000378:metabolism; D004576:Electromyography / Q000379:methods; D015444:Exercise / Q000502:physiology* / Q000523:psychology; D005080:Exercise Test / Q000379:methods; D017079:Exercise Tolerance / Q000502:physiology*; D006801:Humans; D008297:Male; D012123:Pulmonary Ventilation / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult
D002245:Carbon Dioxide