Liftworthy
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Liftworthy

Every exercise ranked by research, by lifters and by results. Find what’s S-tier for your goal, then train it.

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Explore/Abs/Compare

For your abs

Decline Sit-Up vs Hanging Knee Raise

For your abs, decline sit-up rates higher on our research criteria: easier to progress.

Hanging knee raise is easier on the joints.

Both are good choices that train the abs the same way, so they swap freely. Rotating between them every few weeks is an easy way to vary your training.

B
#5
of 23
Decline Sit-Up
Bodyweight
B
#8
of 23
Hanging Knee Raise
Bodyweight
Research score
69
64
Target tension
Strong
Strong
Loaded stretch
Good
Good
Progression
Strong
Fair
Low cost
Strong
Excellent
See the full abs ranking
What these mean
Target tension.
Whether the muscle you’re training is what gives out first, not your grip, balance or other muscles.
Loaded stretch.
How hard the muscle works while stretched. Training it there is linked to more growth.
Progression.
How easily you can keep adding weight in small steps over months and years.
Low cost.
How easy it is on your joints and recovery, and how quickly you can learn it.

The research score comes from these, scored by hand from the studies. Lifter scores appear once an exercise has 10 ratings. How scores work

When each one fits

Good reasons to choose decline sit-up

  • You want to keep adding weight in small steps

Good reasons to choose hanging knee raise

  • You want something easier on your joints
Decline Sit-Up
Hanging Knee Raise
You need
Bench
Pull-up bar
Skill
Easy to learn
Easy to learn
Type
Isolation
Isolation

Questions

Which is better for your abs, decline sit-up or hanging knee raise?

For your abs, decline sit-up rates higher on our research criteria: easier to progress. Hanging knee raise is easier on the joints. Both are good choices that train the abs the same way, so they swap freely. Rotating between them every few weeks is an easy way to vary your training.

Is decline sit-up or hanging knee raise easier to learn?

About the same: both are easy to learn.

Can you do decline sit-up or hanging knee raise at home?

Decline sit-up needs a bench, so a home gym covers it. Hanging knee raise needs a pull-up bar, so a home gym covers it.

Which is easier on the joints, decline sit-up or hanging knee raise?

Hanging knee raise: it rates Excellent for joint and recovery cost in our research rubric, against Strong for decline sit-up.

More comparisons

  • Decline Sit-Up vs Hanging Leg Raise
  • Ab Wheel Rollout vs Decline Sit-Up
  • Hanging Knee Raise vs Hanging Leg Raise
  • Hanging Knee Raise vs Toes-to-Bar
Decline Sit-UpHanging Knee RaiseAll abs exercises