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