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Thera-Band® Excel Calculation Equations
Designed, Created & Programmed By
James D. Speckmann
04/20/23Thera-Band Excel Calculation Equations
James D. Speckmann © 1
Knee Pain & Strength Study
Study Director - Dr. W. Anemaet, PT, PhD
at Regis University – Denver Colorado
Study Dates – January – April 2011
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Introduction
Thera-Band exercise resistance bands are being used in this study. Seven of the eight thera-band colors are being used. The band colors used during this study are: yellow, red, green, blue, black, silver and gold. Each band has a minimum and maximum resistance value. Currently, calculations are being performed manually for each participant for their 12 exercises.
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Computer Calculations
• The study director on the Production work sheet enters two pieces of information. The 1 RM weight and the deformation for each of the 12 exercises. The program will then calculate all the possible value/s for each exercise. These values are displayed in a table and the study director can select the appropriate options.
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Band Calculation Seletcion Routine
Name
Client #
Date
1RM Weight 1RM Weight
1RM * X% 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1RM * X%
Training Weight 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Training Weight
Excursion Inches Deformation inch
Band Color ValueTrunk
paraspinalsR hip abductors R plantar flexors L plantar flexors L hip abductors R dorsi flexors L plantar flexion L knee extensors R knee extensors R hip extensors
Trunk abdominals
L hip extensors Value Band Color
Yellow 1 1 Yellow
Red 2 2 Red
Green 3 3 Green
Blue 4 4 Blue
Black 5 5 Black
Silver 6 6 Silver
Dbl-Silver 7 7 Dbl-Silver
Gold 8 8 Gold
Dbl-Gold 9 9 Dbl-Gold
Tri-Gold 10 10 Tri-Gold
Quad-Gold 11 11 Quad-Gold
Selection
Length Override
Color Value # Bands Mim Lbs Max Lbs Regression ( - ) Value ( + )
Yellow 1 1 2.9 5.8 0.0788 0.0202
Red 2 1 3.9 7.0 1.3670 0.0229
Green 3 1 5.0 9.6 1.5250 0.0352
Blue 4 1 7.1 13.3 2.3230 0.0443
Black 5 1 9.7 17.6 3.2230 0.0587
Silver 6 1 13.2 25.3 4.0530 0.0856
Dbl-Silver 7 2 26.4 50.6 4.0530 0.0856
Gold 8 1 21.6 40.1 6.8820 0.1350
Dbl-Gold 9 2 43.2 80.2 6.8820 0.1350
Tri-Gold 10 3 64.8 120.3 6.8820 0.1350
Quad-Gold 11 4 86.4 160.4 6.8820 0.1350
5
Selecting a band color
Band Calculation Seletcion Routine
Name Test Participant 1
Client # 813
Date 3/13/2011
1RM Weight 127.5 67.5 148.75 96.25 35 107.5 73.75 90 115 55 115 45 1RM Weight
1RM * X% 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1RM * X%
Training Weight 102.00 54.00 119.00 77.00 28.00 86.00 59.00 72.00 92.00 44.00 92.00 36.00 Training Weight
Excursion Inches 8.00 14.00 4.00 4.00 14.00 3.00 3.00 18.00 18.00 15.00 10.00 15.00 Deformation inch
Band Color ValueTrunk
paraspinalsR hip abductors R plantar flexors L plantar flexors L hip abductors R dorsi flexors L plantar flexion L knee extensors R knee extensors R hip extensors
Trunk abdominals
L hip extensors Value Band Color
Yellow 1 1 Yellow
Red 2 2 Red
Green 3 3 Green
Blue 4 4 Blue
Black 5 5 Black
Silver 6 6 Silver
Dbl-Silver 7 12.05 7.15 9.21 7 Dbl-Silver
Gold 8 8.95 6.95 8 Gold
Dbl-Gold 9 9.39 1.71 1.79 8.35 13.39 9 Dbl-Gold
Tri-Gold 10 3.98 1.65 2.87 1.86 14.20 10.22 5.68 10 Tri-Gold
Quad-Gold 11 5.80 2.36 15.08 8.38 11 Quad-Gold
Selection 10 9 10 9 8 10 9 9 10 9 10 9
Length Override
Color Value # Bands Mim Lbs Max Lbs Regression ( - ) Value ( + )
Yellow 1 1 2.9 5.8 0.0788 0.0202
Red 2 1 3.9 7.0 1.3670 0.0229
Green 3 1 5.0 9.6 1.5250 0.0352
Blue 4 1 7.1 13.3 2.3230 0.0443
Black 5 1 9.7 17.6 3.2230 0.0587
Silver 6 1 13.2 25.3 4.0530 0.0856
Dbl-Silver 7 2 26.4 50.6 4.0530 0.0856
Gold 8 1 21.6 40.1 6.8820 0.1350
Dbl-Gold 9 2 43.2 80.2 6.8820 0.1350
Tri-Gold 10 3 64.8 120.3 6.8820 0.1350
Quad-Gold 11 4 86.4 160.4 6.8820 0.1350
The Director then selects the correct band color value for each exercise and enters it into the selection box. If the length is not exactly as required, it can be overridden by entering a desired input in the value override box.
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RX Sheet
Name Test Participant 1
Client # 813
Thera-Band Prescription for Test Participant 1
Date 3/13/2011
Official Name Excursion Band Color Line Length CommentSeq
SL + LCL *
TBL *
Trunk paraspinals 8.00 Tri-Gold 3.98 1 8.98 14.98
R hip abductors 14.00 Dbl-Gold 9.39 2 14.39 20.39
R plantar flexors 4.00 Tri-Gold 1.65 3 6.65 12.65
L plantar flexors 4.00 Dbl-Gold 1.71 4 6.71 12.71
L hip abductors 14.00 Gold 8.95 5 13.95 19.95
R dorsi flexors 3.00 Tri-Gold 1.86 6 6.86 12.86
L plantar flexion 3.00 Dbl-Gold 1.79 7 6.79 12.79
L knee extensors 18.00 Dbl-Gold 8.35 8 13.35 19.35
R knee extensors 18.00 Tri-Gold 10.22 9 15.22 21.22
R hip extensors 15.00 Dbl-Gold 13.39 10 18.39 24.39
Trunk abdominals 10.00 Tri-Gold 5.68 11 10.68 16.68
L hip extensors 15.00 Gold 6.95 12 11.95 17.95
Parameters InchesThera-Band Secure Length 5
Additional length after last line 6
Shortest Length of Band 1.5Longest Length of Band 20
SL + LL * = Secure length of band + line calculation length TBL * = Secure length of band + Line calculation length + finish length
All selected required data is moved from the Production work sheet into the correct location on the RX Sheet. This sheet can be printed.
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Macros & creating the bands
Name Test Participant 1
Client # 813
Thera-Band Prescription for Test Participant 1
Date 3/13/2011
Official Name Excursion Band Color Line Length CommentSeq
SL + LCL *
TBL *
L plantar flexors 4.00 Dbl-Gold 1.71 4 6.71 12.71
L plantar flexion 3.00 Dbl-Gold 1.79 7 6.79 12.79
L knee extensors 18.00 Dbl-Gold 8.35 8 13.35 19.35
R hip abductors 14.00 Dbl-Gold 9.39 2 14.39 20.39
R hip extensors 15.00 Dbl-Gold 13.39 10 18.39 24.39
L hip extensors 15.00 Gold 6.95 12 11.95 17.95
L hip abductors 14.00 Gold 8.95 5 13.95 19.95
R plantar flexors 4.00 Tri-Gold 1.65 3 6.65 12.65
R dorsi flexors 3.00 Tri-Gold 1.86 6 6.86 12.86
Trunk paraspinals 8.00 Tri-Gold 3.98 1 8.98 14.98
Trunk abdominals 10.00 Tri-Gold 5.68 11 10.68 16.68
R knee extensors 18.00 Tri-Gold 10.22 9 15.22 21.22
Parameters InchesThera-Band Secure Length 5Additional length after last line 6Shortest Length of Band 1.5Longest Length of Band 20
SL + LL * = Secure length of band + line calculation length TBL * = Secure length of band + Line calculation length + finish length
Two Macros are available on the RX Sheet. They are the CTL+Shift+S macro which sorts the exercise bands into their colors and ascending length. CTL+SHIFT+R restores the RX sheet to it original format.
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Band Cutting & Marking
When the bands are sorted into the band color and ascending length then the bands can be physically cut and marked. There are three values used in the calculation of a band. The Secure length is used to hold the band in the Velcro holder. The Excursion length is then added so the lines can be marked on the band. The third value is the Finish length to be added to the bottom of the band. Hint! remember to sort the bands into the original sequence CTL+SHIFT+R
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Saving Participant Values
If you will be doing multiple sets of bands for a participant you may want to consider saving the current Production work sheet. Select the entire Production work sheet. Copy it. Create a new work sheet area and paste the copied sheet into this sheet. Be sure to save this work sheet as a unique value.
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Setting up for a new participant
Once you are through with your current participant you can reset the Production work sheet and RX Sheets by doing a CTL+SHIFT+N. This will clear out and reset all values. Enter your new values and you are on your way for this participant.
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Recalculating values for a saved participant.
• Find the correct - saved participants work• Copy the entire sheet• Select the Production work sheet• Select Column 1 Row 1 and paste the copied
work sheet into the production sheet.• Do the changes that are necessary. Go to the RX
Sheet and do what is necessary to create their new bands. Be sure to save the updated sheet as a unique item for the next iteration.
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Input & Changeable Values
• Name, Client # & Date• 1 RM * X% - Current Value 80 %. If you
change the first value the other will also change to the input value.
• Selection – Select the band value for the correct length for the required exercise.
• Length Override – Enter an inch override value as required.
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Input & Changeable Values (cont)
On the RX Sheet there are four changeable values:
• “Secure” Length – This is the length that anchory the band in the Velcro – value 5 inches
• “Finish” Length - Additional length to be added after the last calculated excursion length – value 6 inches.
• Shortest excursion length after Secure length – Value 1.5 inches. • Longest excursion length – Value 20 inches.
If you change any of these values be sure to save the excel sheet and copy it to the production backup. The production backup is a safety precaution in case the production work sheet becomes corrupted.
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Macros
This excel program uses three macros:CTL+SHIFT+N – Reset all values on the
Production and RX work sheetCTL+SHIFT+S – Sorts the bands into colored
group and ascending band lengthCTL+SHIFT+R – Resorts the RX Work sheet into
its original order
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Program Installation• Thera-Band Excel Calculation Equations needs to be saved
into it own directory folder.• When started, if macros are not enabled, the program will
allow you to enable them for this execution.Or
• A trusted macro location can be set up• Select the Developers tab• Select the Macro Security Tab• Select Trusted Location• Add this directory to the trusted location list.
This will enable the macros for execution to be executed each time you run this program.
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