OBS-BA21 Leg Extension Machine

 Leg support & resistance linkage

The padded leg support pad (resting against the shins) secures your lower legs, while the connected linkage component (paired with the yellow adjustment point) translates leg extension movements into smooth, controlled resistance—delivering consistent tension to the quadriceps (front thigh muscles) with every rep.

Adjustable backrest 

It includes a padded, angled backrest and a gold adjustment lever. The lever lets you modify the backrest’s position to fit different body sizes/preferences, ensuring a stable, comfortable upper-body posture during leg extensions—so you can focus fully on engaging your quadriceps without straining your spine.

Seat and handle

The padded seat offers comfortable support to keep you in a stable sitting position during workouts, while the side handle can be gripped to anchor your upper body—preventing movement and ensuring your effort focuses fully on the quadriceps (front thigh muscles) during leg extensions.

Product Parameter

Core Advantages

1. Targeted Quadriceps Isolation

   The leg support linkage, adjustable backrest, and seat/handle assembly work together to anchor your body—ensuring every leg extension movement focuses precisely on the quadriceps (front thigh muscles), with no wasted effort.

2. Customizable Comfort & Fit

   Adjustable components (backrest, resistance) and padded supports (seat, leg pad) adapt to different body sizes and preferences, making it suitable for users of all fitness levels (beginners to advanced).

3. Stable & Controlled Workouts

   The integrated handle and stable frame prevent body movement during training, delivering smooth, consistent resistance to the quads for safe, effective strength building.

Differentiated Design & Premium Materials

• Durable Construction: Corrosion-resistant steel frame (128kg net weight) ensures long-term stability for frequent gym/home use, even with high-resistance training.

• Ergonomic Padding: High-density foam on the seat, backrest, and leg support balances comfort and firmness, reducing fatigue during extended workouts.

• Precision Resistance Linkage: The connected linkage system translates leg movements into smooth, consistent tension—maximizing quad engagement with every rep.

Exclusive Technical Support & Services

• Warranty: 1-year coverage for core components (frame, resistance system) to protect your investment.

• Customization: Optional color choices and logo branding—ideal for commercial gyms to align with their space’s aesthetic.

• Packaging & Guidance: Secure packaging (1730*1130*440mm) ensures safe delivery; the manufacturer provides assembly/usage tips for quick, hassle-free setup.

Frequently Asked Questions (FAQ)

1. What muscles does this machine target?

   It primarily targets the quadriceps (front thigh muscles), with secondary engagement of core muscles for stability.

2. Is it suitable for beginners?

   Yes—adjustable resistance and supportive design let beginners start with low tension while maintaining proper form.

3. What’s the machine’s size?

   It measures 1450*1080*1500mm; ensure you have enough space for installation and full leg extension movement.

4. Can it be used at home?

   It’s suitable for home gyms with sufficient space—its sturdy build and targeted training make it a practical addition.