Male Strength Standards (lb)
| Strength Level | Machine Back Extension | Leg Extension |
|---|---|---|
| Beginner | 67 lb | 78 lb |
| Novice | 147 lb | 135 lb |
| Intermediate | 264 lb | 212 lb |
| Advanced | 415 lb | 306 lb |
| Elite | 591 lb | 411 lb |
Female Strength Standards (lb)
| Strength Level | Machine Back Extension | Leg Extension |
|---|---|---|
| Beginner | 28 lb | 39 lb |
| Novice | 54 lb | 76 lb |
| Intermediate | 90 lb | 128 lb |
| Advanced | 135 lb | 193 lb |
| Elite | 187 lb | 268 lb |