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Bio 226 Isotonic and Isometric Contractions Assignment
- Course
- BIO 226
- Institution
- Marian University
Detailed assignment on;Isotonic and Isometric Contractions.
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Recruitment and Isotonic and Isometric ContractOBJECTIVES AND REVIEW › PRE-LAB QUIZ › PRE-LAB REPORTING › DATA CO
Laboratory Report
Activity: Recruitment and Isotonic a
Name: Tyler Prichard
Instructor: Vikash Patel
Date: 05.24.2024
Predictions
1. When the arm goes from resting to flexing, the am
increase
2. During flexion, the amplitude and frequency of sE
be greater than
3. Recruitment of motor units will be greatest when t
20 pounds
Materials and Methods
Comparison Of Motor Unit Activation During Conc
1. Dependent Variable: amplitude and frequency of s
2. Independent Variable: muscle movement
3. Controlled Variables: total number of motor units p
condition
Recruitment During Isometric Contractions
1. Dependent Variable: amplitude and frequency of s
2. Independent Variable: muscle load
3. Controlled Variables: total number of motor units p
physical condition
4. What does the acronym sEMG stand for?
, Surface Electromyography
5. During a muscle contraction, what is recorded on a
Amplitude and frequency of sEMG spike
6. Spike numbers were measured during a ____msec
200
Results
Table 3: Muscle Tone (Resting
Amplitude (mV)
! Rest Concentric (5 lb) Eccent
Raw Subject 1 0.11 0.43 0.
Data
2 0.12 0.42 0.
3 0.13 0.48 0.
Average 0.12 0.44 0.
sEMG Amplitudes and Frequencies at Rest and Du
Amplitude (mV)
0.5
0.4
0.3
0.2
0.1
0
Rest Concentric Eccentric
Isotonic Isotonic
Contraction Contractions
Frequency (spikes number per 0.2 sec time period)
25
20
15
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