The Effects of Performing Mental Exertion during Cycling Exercise on Fatigue Indices
This study investigated the effect of performing prolonged mental exertion during
submaximal cycling exercise on exercise tolerance and fatigue. Participants
performed 5 experimental sessions. Session 1: determination of cycling peak
power output. Sessions 2 and 3: cycling to exhaustion at 65% peak power
output with mental exertion or watching a movie. Sessions 4 and 5: cycling for
45 min at 65% peak power output with mental exertion or while watching a
movie. During sessions 2–5, rate of perceived exertion and heart rate
were recorded while cycling and cortisol and prolactin concentrations,
psychomotor vigilance task performance, and maximal voluntary contraction were
measured pre-and post-sessions. During sessions 2 and 3, time to exhaustion was
reduced (p<0.01) and rate of perceived exertion was increased
(p<0.01) in session 2 compared to 3. Cortisol, prolactin and
heart rate increased and psychomotor vigilance task and maximal voluntary
contraction decreased from pre-to post-sessions with no difference between
sessions. Cortisol, prolactin and rate of perceived exertion were higher
(p<0.03) in session 4 than 5. Heart rate increased and
maximal voluntary contraction decreased from pre-to post-sessions with no
difference between sessions. Prolonged mental exertion during cycling exercise
...
Source: International Journal of Sports Medicine - Category: Sports Medicine Authors: Barzegarpoor, Hamidreza Amoozi, Hamid Rajabi, Hamid Button, Duane Fayazmilani, Rana Tags: Training & Testing Source Type: research
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