Muscle Lab

Effect of Fatigue on Muscle Action
Trial # of Squeezes in 20 Seconds
1 42
2 41
3 37
4 34
5 34
6 33
7 33
8 31
9 31
10 31

ANALYSIS OF DATA:

1.What are the three changes you observed in a muscle while it is working(contracted)?
My muscle felt considerably harder and became larger around and felt sort of pinch or shorter.
2.What effect did the cold temperature have on the action of your hand muscles?Explain.
It made my muscles reaction time slower to contracting.
3. Number of Fists
Normal 42
Ice Water 31
4. What effect did fatigue have on the action of your hand muscles? Explain.
The fatigue made my hands almost hurt to move and made all of the motions much slower. I was using so much energy after a while my muscle just seemed to stop responding even with a large amount of determination and concentration.