Male Strength Standards (lb)
| Strength Level | Back Extension | Russian Twist |
|---|---|---|
| Beginner | -63 lb | -34 lb |
| Novice | +30 lb | +80 lb |
| Intermediate | +156 lb | +240 lb |
| Advanced | +313 lb | +440 lb |
| Elite | +492 lb | +669 lb |
Female Strength Standards (lb)
| Strength Level | Back Extension | Russian Twist |
|---|---|---|
| Beginner | -35 lb | -31 lb |
| Novice | +22 lb | +48 lb |
| Intermediate | +94 lb | +155 lb |
| Advanced | +180 lb | +285 lb |
| Elite | +273 lb | +433 lb |