Sled Alternating Single Leg Negativ Press
- Zielmuskel
- —
- Equipment
- Sled machine
- Körperregion
- Thighs
- Typ
- Strength
The sled alternating single leg negativ press is a unilateral lower-body strength exercise performed on a 45-degree sled machine, where you press one leg at a time with deliberate emphasis on the eccentric lowering phase. It targets the thighs, particularly the quadriceps, and helps correct side-to-side strength imbalances while building muscle through increased time under tension on the descent.
Sled Alternating Single Leg Negativ Press: So führst du sie aus
- 1Sit in the 45-degree sled machine and press your lower back, hips, and head firmly against the pad.
- 2Place your right foot flat in the center of the platform at roughly hip width, with your toes angled slightly outward; rest your left foot on the frame or floor.
- 3Grip the handles at your sides to anchor your upper body and brace your core.
- 4Disengage the safety stops and hold the sled with your working leg extended, stopping just short of full knee lockout.
- 5Inhale and lower the sled under control by bending your working knee slowly — take three to four seconds to descend — keeping your heel flat on the platform and your knee tracking in line with your toes.
- 6Continue the descent until your thigh reaches roughly parallel to the platform or your lower back just begins to lift off the pad, whichever comes first.
- 7Exhale and drive evenly through your full foot to press the sled back up, extending your knee and hip simultaneously, and stop just short of full lockout.
- 8Engage the safety stops, switch feet so your left foot is on the platform, release the stops, and repeat the slow eccentric descent followed by a controlled press.
- 9Continue alternating legs for the target number of reps per side, then engage the safety stops securely before exiting the machine.
Technik-Tipps
- Slow the lowering phase to three to four seconds on every rep — the eccentric emphasis is the defining feature of this variation, and rushing the descent eliminates its primary benefit.
- Keep your heel flat on the platform throughout the descent and press; if it rises, reduce the range of motion until ankle and hip mobility allow a deeper position.
- Track your knee directly over your second and third toe on every rep to protect the joint and distribute load evenly across the thigh musculature.
- Match rep count and range of motion on both legs before adding load, since the purpose of alternating unilateral work is to expose and correct imbalances rather than let the stronger side set the standard.
- Engage the safety stops every time you switch legs so the sled cannot descend uncontrolled while you reposition.
Häufige Fehler
- Rushing the eccentric phase instead of lowering slowly, which removes the primary stimulus of this variation and reduces muscle-building benefit — count three to four seconds on every descent.
- Letting the heel rise off the platform at the bottom of the rep, which transfers load away from the thighs and onto the knee — keep the entire foot flat throughout the movement.
- Allowing the knee to cave inward during the press, which places harmful valgus stress on the knee joint — actively drive your knee outward in line with your foot on every rep.
- Locking the knee out fully at the top, which shifts load from the muscles to the joint and reduces time under tension — stop just short of full extension.
- Using a range of motion so deep that the lower back rounds off the pad, which compresses the lumbar spine under load — shorten the range until hip mobility improves.
Häufig gestellte Fragen
What muscles does the sled alternating single leg negativ press work?
The exercise primarily targets the quadriceps, which are the main muscles of the thigh responsible for knee extension. The slow eccentric phase places these muscles under prolonged tension, which is associated with greater muscle damage and growth stimulus compared to a standard-tempo press.
What does the eccentric or negative phase mean in this exercise?
The eccentric phase is the lowering portion of the movement, when the sled descends and your knee bends. Muscles produce force while lengthening during this phase. Deliberately slowing it to three to four seconds increases time under tension and is a well-established method for stimulating muscle growth and building strength through a full range of motion.
How is this different from a standard single-leg sled press?
The defining difference is the deliberate slow lowering phase. A standard single-leg press typically uses a consistent tempo on both the descent and press. This variation places extra emphasis on the eccentric portion, which increases mechanical stress on the thigh muscles and can promote greater strength and hypertrophy gains over time.
How much weight should I use for this exercise?
Start lighter than you would for a standard two-leg or single-leg press. Because you are slowing the eccentric phase significantly, fatigue accumulates faster. Choose a weight that allows you to complete the target reps with a controlled three-to-four-second descent, your heel flat, and your lower back against the pad throughout every rep.
How many reps and sets are appropriate for the sled alternating single leg negativ press?
Three to four sets of six to twelve reps per leg is a common starting point for strength and hypertrophy goals. Because the slow eccentric places extra demand on the muscles, fewer reps per set are often sufficient compared to standard-tempo work. Rest two to three minutes between sets to allow adequate recovery.
