Respiration - Spira - Spir - Pir 

Wherever you see respiration or the following part words of respiration 'spira', 'spiro', 'pira' in sports science, it means breathing. 

Respiration - Breathing

(In biology, respiration means using glucose to produce energy for muscles to move or for plant cells to grow.)

To remember what respiration means, use the following mnemonic:

In resting after perspiring at the gym station (respiration) there is only one thing to do catch your breath (breathing (sports science)) and replenish the lost energy with a glucose energy drink (using glucose to make energy (biology)).