Muscle Fatigue

# of fists in 20 seconds

NORMAL: 50

ICE WATER: 43

For this section I used a pair of muscle grips, which I would imagine was more straining than the suggested actions.
# of Squeezes in 20 seconds

1 54


2 42


3 39


4 34


5 30


6 23



7 16


8 14


9 10


10 6







ANALYSIS OF DATA:

1. What are the three changes you observed in a muscle while it is working (contracted)?
The muscle Hardened and since it contracted it moved into a smaller area. It also bulged up, or outward.
2. What effect did the cold temperature have on the action of your hand muscles? Explain.
It made reaction slightly slower. I was not able to contract the muscles in my hand and forearm as quickly.
3. In Figure 3, make a line graph of your results of the fatigue experiment. Be sure to fill in the values on the vertical axis.







4. What effect did fatigue have on the action of your hand muscles? Explain.

The action became slower, harder and more painful.