Tools
What instrument was used for the precise measurement of angels?
Goniometer
What type of contraction is this?
Muscle is activated but instead of being allowed to lengthen or shorten, it is held at a constant length
Isometric Contraction
What type of tension is this?
a muscle is stretched past its resting length
Passive Tension
What is the hand-held device for objectively quantifying muscle strength called?
Dynamometer
What type of contraction is this?
A type of muscle activation that causes tension on your muscles as it shortens
Concentric Contraction
What type of tension is this?
Dependent on the number of motor units and the respective muscle fibers recruited in the contraction
Active Tension
Before using the Dynamometer, we must ......
Set it to zero
What type of contraction is this?
The motion of an active muscle while it is lengthening under load
Eccentric Contraction
Like a rubber band, as the length _________ so do the __________ tension
Increase; Passive
What do we have to make sure not to move during isometric contraction?
arm (limb)
When a muscle is fully stretched, the muscle is at its ______ ________.
longest length
What is active tension in the muscle dependent on during a contraction?
1. amount of motor units
2. amount of motor fibers recruited
Which hand did we use to hold the dynamometer and the position of the arm?
What position was our elbow?
non-dominate arm at the side and elbows straight
How do you change the muscle length?
By changing the joint angle
There is an optimum length at which a muscle, when stimulated, can exert maximum tension.
What does the length varies/depend on?
1. muscle structure
2. muscle function
According to our results, at what degree and wrist angle was the lowest and the highest?
Lowest - 60 ° Flexion
Highest- 0 ° Neutral