Review Article
Respiratory Changes in Response to Cognitive Load: A Systematic Review
Table 3
Overview of respiratory changes in response to reviewed cognitive tasks.
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Note. ↑: increase; ↓: decrease; —: no change. A combination of two characters indicates that the corresponding effects were reported by an equal number of studies. Parentheses indicate a database of less than three studies for increase, decrease, no change, or mixed effects, respectively. RR: respiratory rate; TV: tidal volume; MV: minute ventilation; : inspiratory time; : inspiratory/expiratory ratio; TV/: mean inspiratory flow rate; : inspiratory duty cycle; : expiratory volume; % RCi: contribution of ribcage breathing to inspiratory volume; SR: sigh rate; Var: variance; CV: coefficient of variation; AR: autocorrelation; petCO2: partial pressure of end-tidal carbon dioxide; VO2: oxygen consumption; VCO2: carbon dioxide production; RER: respiratory exchange ratio. |