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Technical Stretch/Force Data

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We created the following charts to give you an idea of the resistance each band will add to your lift. The first chart shows the "practical resistance" or about how much weight it would feel like you're lifting.

Exercise Bands Lay Flat Length Width Resistance
Light 41″ 1/4″ 5 to 15
Medium 41″ 1/2″ 20 to 35
Heavy 41″ 3/4″ 30 to 50
Robust 41″ 1-1/8″ 40 to 80
Power 41″ 1-3/4″ 50 to 120
Strong 41″ 2-1/2″ 60 to 150
Monster 41″ 4″ 80 to 200
Agility 6′ 1-3/4″ 175 to 225
Explosive 10′ 2″ 225 to 275

The second table is more scientific and is derived from testing done with the Akron Rubber Development Laboratory. This table shows the amount of tension when the band is stretched from a resting state.

 

LIGHT

(micro mini)

MEDIUM

(mini)

HEAVY

(monster mini)

ROBUST

(light)

POWER

(average)

STRONG

(strong)

Length (in)

Band Tension (lbs)

0 0 0 0 0 0 0
4 3.4 6.9 12.0 15.4 24.0 34.3
8 4.6 9.2 16.2 20.8 32.3 46.2
12 5.6 11.3 19.8 25.4 39.5 56.5
16 6.5 13.0 22.7 29.2 45.5 65.0
20 7.2 14.4 25.2 32.4 50.3 71.9
24 7.9 15.7 27.5 35.4 55.0 78.6
28 8.5 16.9 29.7 38.1 59.3 84.7
32 9.0 17.9 31.4 40.3 62.7 89.6
36 9.4 18.9 33.0 42.4 66.0 94.3
40 9.9 19.9 34.8 44.7 69.5 99.3
44 10.3 20.7 36.2 46.6 72.4 103.5
48 10.8 21.6 37.8 48.7 75.7 108.1
52 11.3 22.5 39.4 50.6 78.8 112.5
56 11.7 23.3 40.8 52.4 81.6 116.6
60 12.1 24.1 42.2 54.3 84.5 120.7
64 12.4 24.9 43.5 55.9 87.0 124.3
68 12.9 25.7 45.0 57.8 90.0 128.5
72 13.2 26.5 46.3 59.6 92.7 132.4
76 13.6 27.3 47.7 61.4 95.5 136.4
80 14.1 28.2 49.4 63.5 98.8 141.1
84 14.5 29.0 50.7 65.2 101.5 145.0
88 15.0 29.9 52.4 67.3 104.7 149.6
92 15.4 30.8 53.8 69.2 107.6 153.8
96 15.8 31.6 55.3 71.1 110.5 157.9
100 16.3 32.5 56.9 73.2 113.8 162.6
104 16.7 33.3 58.3 74.9 116.6 166.5
108 17.2 34.3 60.1 77.2 120.2 171.7
112 17.5 35.1 61.4 79.0 122.8 175.5
116 18.2 36.3 63.6 81.7 127.1 181.6
120 18.4 36.9 64.5 82.9 129.0 184.3