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Directions
Click on the calculator and use it to compute the average for the data in the first column of each table. Type your data in the highlighted cell of the table. Use the Enter or Return key to input the data. The average for data in the succeeding columns of each table will automatically be calculated for you.
Use the data in Table 5 and the calculator to determine the average maximum force when the muscle is 6.5 mm long.
To see your calculations reflected in a graph, click on the See Graphs tab.
Your data tables will be transferred to your Laboratory Report.
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Measurement of Threshold Stimulus 
Voltage (mV) 100 mV 200 mV 300 mV 400 mV 500 mV Maximum Force (gf)
(Motor unit 1)Muscle Length and Contraction Force Muscle Length (mm) 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 Maximum Force (gf)
(Motor unit 1)Average Minimum 5 characters, four numbers, one digital full stop. The Average value is valid, thank you. Sorry. Your value is wrong. Please try again. The valid Average value is correct, thank you.
Equations (fx)
Use these formulas for making your calculations. Round your answer to the nearest tenth.
Averages
Add the values from the three subjects; divide by three.
Your data will not be saved until the table is completely filled in.
Stimulation Frequency and Contractile Force Stimuli per second 7.5 15 30 45 60 Maximum Force (gf)
(Motor unit 1) -
Effect of Stimulation Value on Twitch Contraction Force
Effect of Muscle Fiber Length on Contraction Force
Effect of Stimulation Frequency on Contraction Force