This is a fun, hands-on lab where students explore the effects of fatigue on muscles.
When we exercise, the oxygen in our bodies is used rapidly to make energy. This is called aerobic respiration. As we increase our blood flow, the amount of oxygen is depleted. The body cannot make enough ATP (energy molecules) to maintain the demand. We become fatigued. If we continue to exercise with this lack of oxygen, lactic acid is produced. This is called anaerobic respiration.
This mini-lab uses inexpensive, readily available, and safe materials. This zip file includes a pdf version, as well as a fully editable word doc.