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April 19, 2010The Journal of PhysiologyOpen Access

Reduced muscle activation during exercise related to brain oxygenation and metabolism in humans

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Why the study?

Does reduced cerebral oxygenation relate to central fatigue during maximal and hypoxic exercise in males?

Population

16 males

Comparison

Low intensity, maximal intensity, and hypoxic… vs Resting values and low intensity exercise

Design

Other

Authors

PRP. RasmussenUniversity of CopenhagenJNJannie NielsenUniversity of CopenhagenMOMorten OvergaardAarhus University

Discussion

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Implication

Reduced cerebral oxygenation may contribute to central fatigue in hypoxia; hypothesis-generating for performance limits, needing causal confirmation.

Structured PICO

Does reduced cerebral oxygenation relate to central fatigue during maximal and hypoxic exercise in males?

P
Population
16 males
I
Intervention
Low intensity, maximal intensity, and hypoxic (0.10) cycling exercise
C
Comparator
Resting values and low intensity exercise
O
Outcome
Exercise fatigue evaluated by ratings of perceived exertion (RPE), arm maximal voluntary force (MVC), and voluntary activation of elbow flexor muscles assessed with transcranial magnetic stimulationsurrogate

Reduced cerebral oxygenation during exhaustive exercise may play a role in the development of central fatigue and limit exercise capacity.

Cite This Study

Rasmussen et al. (2010) studied this question.

synapsesocial.com/papers/6a6fdcafac440176ef2883e3https://doi.org/10.1113/jphysiol.2009.186767
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Also Consider

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  1. 1Carotid artery blood flow and middle cerebral artery blood flow velocity during physical exercise1996 · 220 citations
  2. 2Lactate and H+ uptake in inactive muscles during intense exercise in man.1995 · 72 citations
  3. 3Inadequate Cerebral Oxygen Delivery and Central Fatigue during Strenuous Exercise2007 · 208 citations
  4. 4Non‐selective β‐adrenergic blockade prevents reduction of the cerebral metabolic ratio during exhaustive exercise in humans2008 · 69 citations
  5. 5Fuelling Cerebral Activity in Exercising Man2006 · 160 citations