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Running head: MUSCLE PHYSIOLOGY LAB: BIO107 1
Muscle Physiology Lab: Bio107
Name of Student
Name of Professor
Course title
Date

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Running head: MUSCLE PHYSIOLOGY LAB: BIO107 2
Muscle Physiology Lab: Bio107
Experiment 1: Effect of changing load on isotonic and isometric contraction
Question: What effect will increasing load (weight) have on the ability to move objects?
Hypothesis: In an isometric contraction, the muscle as a whole does not change its length,
and the tension developed in the muscle never exceeds the load while in an isotonic contraction,
tension develops to a point and then remains constant while the muscle changes its length.
Results
Data: 1 = easy to move; 2 = medium effort; 3 = difficult
Weight
Age
previous
weight training
experience
Gender
none
1
1
1
3lb
1
1
1
8lb
2
1
2
Student 1 was 16 years old, had no record of previous strength exercise and was a female.
Student 2 was 12 years old, had a relatively high record of previous strength exercise
and was a female.

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Running head: MUSCLE PHYSIOLOGY LAB: BIO107 1 Muscle Physiology Lab: Bio107 Name of Student Name of Professor Course title Date Running head: MUSCLE PHYSIOLOGY LAB: BIO107 2 Muscle Physiology Lab: Bio107 Experiment 1: Effect of changing load on isotonic and isometric contraction Question: What effect will increasing load (weight) have on the ability to move objects? Hypothesis: In an isometric contraction, the muscle as a whole does not change its length, and the tension developed in the muscle never exceeds the load while in an isotonic contraction, tension develops to a point and then remains constant while the muscle changes its length. Results Data: 1 = easy to move; 2 = medium effort; 3 = difficult Weight Age previous Gender weight training experience none 1 1 1 3lb 1 1 1 8lb 2 1 2 Student 1 was 16 years old, had no record of previous strength exercise and was a female. Student 2 was 12 years old, had a relatively high record of previous strength exercise and was a female. Running head: MUSCLE PHYSIOLOGY LAB: BIO107 3 Student 3 was 14 years old, had little expereienceon previous strength exercise and was a male. Conclusion The more the weight added, the speed reduced when lifting the weights. Students with previous exercise experience had a relatively easier time as compared to those who had no experience. The male students had an easier time than their female counterparts. Experiment 2: Effect of changing load on speed of isotonic contractio ...
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