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Exercise-induced asthma

Exercise-induced asthma

Have you ever felt shortness of breath, heavy coughing, chest tightening, or wheezing while exercising? If so, you may be someone that is experiencing exercise-induced asthma. It may be that exercise exclusively triggers these symptoms, however other asthmatics may experience symptoms due to environmental factors such as cold air, allergens, respiratory infections, some basic medications (e.g.(…)

How long can a muscle work before fatiguing

How long can a muscle work before fatiguing

Can a muscle fatigue after 2-3min work, at sub-maximal loads? Indeed it can.  Muscle fatigue can be predicted by the tension time index (TTdi), a tool developed by Clanton & Grassino in the 1980’s. A tension-time index of 0.15 can predict fatigue when a muscle works indefinitely. The TTdi is the product of normalised force(…)