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© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
Exercise Physiology
Laboratory Manual
by
Beam and Adams
Chapter 5
Isometric (Static) Strength
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© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
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Overview
- Isometric strength requires a muscle contraction without observable shortening of the muscle.
- Handgrip strength (isometric) is important for football players (catching) and older ladies (activities of daily living).
- However, handgrip testing is most useful in screening (health care) for muscle weakness
as handgrip strength correlates well with
many other muscle groups in the body.
© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
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Figure 5.1
Define isometric strength.
Why is measuring handgrip strength important?
How do you properly fit the dynamometer to each individuals hand-size/grip.
What is the correlation (aka, reliability coefficient) of handgrip- strength to other muscle groups in the body?
How does a dynamometer differ from a tension-meter?
How would you calibrate a dynamometer?
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© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
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Figure 5.2
Follow proper procedure in measuring handgrip strength (see text).
Is the subject in the figure following proper procedure?
Are there acceptable other arm positions?
Is it necessary to stand?
How long should the subject squeeze?
Which energy system does handgrip testing utilize?
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© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
5-*
© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
5-*
© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
5-*
Table 5.1
What units of measurement are used to measure handgrip strength?
Where (see norms) does your handgrip and the class’s handgrip fall?
Are males stronger than females?
Should handgrip be measured with the dominant hand?
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© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
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Table 5.2
Should one measure the dominant handgrip, or the right hand only?
Are males stronger than females?
What is the effect of age on handgrip strength?
Can you think of a situation where handgrip strength would be very high, but leg strength would be low?
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© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
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Figure 5.3
Explain the relationship between age and gender
on handgrip strength.
© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
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© 2014 The McGraw-Hill Companies, Inc. All rights reserved.
5-*
Homework:
Read the assignment before the lab experience.
Complete Forms Chapter 5
After the lab, write up the lab report per guidelines