Depth Jump
What Is the Depth Jump?
Depth Jump is a compound exercise that primarily targets the quadriceps and also engages the glutes, hamstrings, and calves. It is an advanced-level plyometric movement that trains the legs to absorb a sudden landing force and immediately redirect it into a maximal vertical jump.
The exercise is a staple of reactive strength training, used by athletes in sports that demand explosive power, such as sprinting, jumping, and rapid changes of direction. It differs from a Box Jump, which starts from the ground and only asks for a concentric jump onto the box: a Depth Jump starts from standing on the box, so the legs first have to absorb body weight falling from height before reversing that force into a jump. It also differs from a Depth Drop, which uses the same step off the box but ends with the landing absorbed and held rather than redirected into a jump.
Box height controls how much force the legs must absorb before the jump. A systematic review of drop jump training found that drop height on its own should not be treated as the main intensity variable; ground reaction force, power output, and jump height are what determine training intensity. In practice, most people start with a modest box, commonly in the 12 to 18 inch range, and only increase height once the landing-to-jump transition stays quick and controlled, since a box that is too high mainly adds landing force without adding training benefit.
Depth Jump suits athletes who already have a solid lower-body strength base and are comfortable landing from a jump, since the legs must handle the eccentric load of the drop on top of the explosive concentric demand of the rebound. Clients who are new to jump training get more benefit from building up through a Box Jump and a Depth Drop first.
Muscles Worked
- Rectus Femoris
- Primary
- Vastus Lateralis
- Primary
- Vastus Medialis
- Primary
- Gluteus Maximus
- High
- Biceps Femoris
- Medium
- Semitendinosus
- Medium
Instructions
- Stand on top of a sturdy plyo box with your feet hip-width apart, close to the front edge.
- Step off the box with one foot and let gravity pull you down; do not jump or push off the box.
- Land on both feet at the same time, bending the hips, knees, and ankles to absorb the drop.
- The instant your feet contact the ground, reverse the landing into a maximal vertical jump.
- Drive your arms upward to help propel the jump.
- Fully extend the hips, knees, and ankles at the top of the jump.
- Land softly back on both feet with soft knees to finish the rep.
- Step down and reset beside the box before repeating for the prescribed reps.
Common Mistakes
Jumping off the box
Pushing off the box top instead of stepping off adds extra downward velocity, increasing the landing force beyond what the drop height is meant to train.
Box too high
A box picked for ego instead of control extends ground contact time and adds landing force without adding training benefit; start lower and raise the height only once the landing stays quick and controlled.
Knees caving inward
Letting the knees collapse toward each other on landing shifts load onto the knee ligaments instead of the quads and glutes; land with the knees tracking over the toes.
Pausing after landing
Resting in the landing position before jumping turns the exercise into a slow squat followed by a separate jump instead of one reactive movement; the rebound should begin the instant the feet touch down.
Landing stiff-legged
Landing with little hip or knee bend sends the impact straight into the joints instead of the muscles; let the hips, knees, and ankles flex to absorb the drop before driving back up.
Injuries
Depth Jump is a high risk exercise when performed with proper technique. It loads the knee extensor mechanism and ankle complex heavily, since the legs must absorb body weight falling from a box and then immediately produce a maximal jump, all in a fraction of a second.
The main strain points are the patellar tendon and knee ligaments, particularly if the knees collapse inward on landing, along with the Achilles tendon and calves from the repeated impact and takeoff. Prevention comes down to landing with the knees tracking over the toes, keeping ground contact brief instead of stalling in the landing, choosing a box height the athlete can rebound from confidently, and capping the volume of a session since the eccentric demand is high and typically needs 48 to 72 hours of recovery before the next session.
Beginners, anyone without a solid squat base, and anyone with current knee pain or a recent lower-body injury should regress to a Box Jump or a Depth Drop and build jumping and landing competence before adding the drop. Stop the set if landings get louder, ground contact slows down, or any knee or ankle pain appears.
- Primary Focus
- Quads
- Equipment
- Body weight and plyo box
- Modality
- Plyometrics
- Difficulty
- Advanced
Alternative Exercises
Frequently Asked Questions
- Q: How high should the box be for a depth jump?
Most people start with a box around 12 to 18 inches, since a box that is too high extends ground contact time and adds landing force without extra benefit. Height should only go up once the landing-to-jump transition stays quick and controlled.
- Q: Is a depth jump the same as a box jump?
No. A Box Jump starts from the ground and only asks for a concentric jump up onto the box. A Depth Jump starts from standing on the box, so the legs absorb a landing first and have to reverse that force into a jump, which trains reactive strength rather than just jump height.
- Q: Is a depth jump the same as a drop jump?
The two terms are often used interchangeably, but some coaches draw a line between them: a drop jump is cued for the fastest possible ground contact with a stiff landing, while a depth jump is cued to land softly through a deeper knee bend and jump as high as possible, which is the version trained here.
- Q: How many reps and sets should I do?
Because the exercise is explosive and taxing on the tendons, keep sets short, around 3 to 5 reps, with 5 to 10 seconds between reps and 2 to 3 minutes between sets so each jump stays close to maximum effort.
- Q: Who should avoid depth jumps?
Beginners, anyone without a solid squat base, and anyone with current knee pain or a recent lower-body injury should build jumping competence with a Box Jump or a Depth Drop first.