Machine hack squat

Ratings

Scores 1-5 averaged over sources. Tap a rating for the claims behind it. Claims are our summaries of the linked sources, fact-checked by AI.

• Muscle growth higher is better4.2

  Very good; among the better picks for the muscle. 5 sources.

  • 4/5 Angled to give huge quad tension at the stretch, described as very good for big quads. Renaissance Periodization, The 5 Most Dangerous Machines in the Gym @ 19:24videoExpert opinion2025checked by AI
  • 4/5 A tier: adjustable stance, deep range, easier on the back than barbell squats, preferred over average leg press. Renaissance Periodization, Every Gym Machine Ranked by Exercise Scientists @ 37:33videoExpert opinion2025checked by AI
  • 5/5 Same upsides as squat with faster setup, more locked-in path and adjustable foot position; S tier and his best quad pick. Jeff Nippard, The Best & Worst QUAD Exercises (Ranked Using Science) @ 4:38videoExpert opinion2024checked by AI
  • 4/5 Purpose built for quads, also hits adductors and glutes somewhat; best for quad focus. Renaissance Periodization, Which Squat Is Best For Building Muscle? (barbell vs hack squat) @ 6:36videoExpert opinion2024checked by AI
  • 4/5 High raw stimulus magnitude, so it is a core pick for quad growth, especially for people resistant to quad gains. Renaissance Periodization, Get Bigger Quads With This Science-Based Program! @ 9:44videoExpert opinion2023checked by AI
• Stimulus to fatigue higher is better4.2

  Low cost for a strong stimulus. 5 sources.

  • 5/5 Adjustable platform and back pad make it the best quad stimulus per unit of fatigue the speaker has found; heavy soreness and pump from only a few sets. Renaissance Periodization, The 10 BEST Gym Machines For Muscle Growth @ 2:02videoExpert opinion2025checked by AI
  • 4/5 Much less systemic and axial fatigue than squats, so advanced lifters get a better quad return per fatigue. Renaissance Periodization, Which Squat Is Best For Building Muscle? (barbell vs hack squat) @ 20:24videoExpert opinion2024checked by AI
  • 4/5 Named among the top SFR quad movers; heavy, deep and quad-biased, giving big stimulus for less fatigue than heavy squats. Renaissance Periodization, Get Bigger Quads With This Science-Based Program! @ 9:13videoExpert opinion2023checked by AI
  • 4/5 Pairs well with leg extensions to hit quads hard while leaving later hamstring work fresh. Renaissance Periodization, Four Index Approach to Exercise Selection | Advanced Hypertrophy Concepts and Tools | Lecture 11 @ 27:31videoExpert opinion2021checked by AI
  • 4/5 Calls hack squats a great stimulus-to-fatigue exercise for him, better than leg press; stresses this is personal, not universal. Renaissance Periodization, Stimulus to Fatigue Ratio Quick Guide @ 24:20videoExpert opinion2020checked by AI
• Injury risk lower is better3.0

  Moderate; needs attention to form or load. 2 sources.

  • 4/5 Hardest at the bottom and you cannot bail out if stuck deep, risking knee, hip and spine damage; use spotters on heavy low-rep sets. Renaissance Periodization, The 5 Most Dangerous Machines in the Gym @ 19:24videoExpert opinion2025checked by AI
  • 2/5 First suggested swap when injury prevents barbell squatting, as a comfortable machine alternative. Jeff Nippard, How To Get A Huge Squat With Perfect Technique (Fix Mistakes) @ 9:19videoExpert opinion2019checked by AI
• Loaded stretch higher is better4.5

  Peak tension at a deep stretch. 2 sources.

  • 5/5 Tension peaks in the deep stretched position and fades near the top. Renaissance Periodization, The 5 Most Dangerous Machines in the Gym @ 19:24videoExpert opinion2025checked by AI
  • 4/5 Named with squats, leg presses and belt squats as lifts that combine a deep stretch with high tension there. Renaissance Periodization, How to Pick the BEST Exercises for Muscle Growth @ 4:06videoExpert opinion2025checked by AI
• Spinal load lower is better2.0

  Light. 1 source.

  • 2/5 Machine bracing means the load is not crushing the spine, so the back and posterior chain stay fresh. Renaissance Periodization, Which Squat Is Best For Building Muscle? (barbell vs hack squat) @ 7:07videoExpert opinion2024checked by AI
• Knee stress lower is better3.0

  Moderate; fine for healthy knees with sensible load and range. 1 source.

  • 3/5 Moving the back pad forward lets you get more forward knee flexion with less of the knee pressure many people feel in a fully vertical setup. Renaissance Periodization, The 10 BEST Gym Machines For Muscle Growth @ 1:32videoExpert opinion2025checked by AI