Leg Extension Muscles Worked

Products Description Pr oduct function Extremely Focused Training Target This leg extension minimizes interference from other muscles like the glutes and hamstrings, allowing the training load to be completely focused on the quadriceps. It's particularly suitable for strengthening the vastus...

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Description

Technical Parameters

Products Description

Model	XZ8014A
Machine size	1670x1060x1480MM
Machine weight	285KG
Weight stack	100KG
Material	Precision steel frame, high - elasticity PU cushion/backrest, alloy metal parts

Product function

Extremely Focused Training Target

This leg extension minimizes interference from other muscles like the glutes and hamstrings, allowing the training load to be completely focused on the quadriceps. It's particularly suitable for strengthening the vastus medialis muscles and addressing uneven development of the anterior thigh muscles.

Controllable knee stress

Compared to compound exercises like squats and deadlifts, leg extensions offer a simpler knee stress pattern and adjustable weights. They're ideal for those recovering from knee surgery, safely activating the quadriceps under low load. They're also suitable for beginners, helping to avoid knee injuries caused by improper form.

Precisely training intensity and range

The leg extension weight can be fine-tuned based on your strength level, ranging from a few kilograms to several dozen kilograms, allowing for gradual increases in training intensity. The user can also choose the appropriate flexion and extension angle to avoid overstretching.

Instructions

Machine Adjustment (Core Prerequisite)

Adjusting the Seat Height

After sitting, ensure your knees are aligned with the machine's pivot point, your feet are fully resting on the pedals, and your thighs are parallel to the ground.

Securing Leg Position

Place the machine's pressure pad in front of your calf, 3-5 cm below your knee. Use a tightness that allows you to exert force steadily without shaking.

Adjusting the Weight

Choose the appropriate weight based on your strength. Beginners are recommended to start with 5-10 kg and gradually increase as you become more familiar with the movement.

Standard Procedure

Starting Position

Lean back against the chair back. Hold the handles on both sides of the leg extension with both hands. Keep your upper body stable, look straight ahead, and keep your knees bent at 90 degrees.

Leg Extension

Using your quadriceps, slowly straighten your calves and lift the pedals upward until your knees are nearly fully extended, maintaining a slight 10-15 degree bend. Hold for 2-3 seconds and feel the contraction in your quadriceps.

Slow Lowering

After a brief pause at the top of the movement, slowly lower your calves back down to the starting 90-degree bend. Lower slowly and avoid releasing quickly. Hold for 2-3 seconds.

Repetitions

Complete 12-15 repetitions per set. We recommend 3-4 sets per session, with 60-90 seconds of rest between sets.

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Maintain a stable upper body throughout the exercise. Avoid arching your back, shrugging your shoulders, or lifting your hips. This will distract the quadriceps and potentially cause lower back discomfort.

Keep your knees aligned with your toes. Do not turn inward or outward to prevent the load from shifting, increasing the risk of injury.

Maintain a consistent movement speed and avoid using your calves to leverage momentum. Active flexion and extension of the quadriceps is essential for effective training.

Factory Information

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FAQ

Q: Can the machine be customized according to needs?

A: Customizable single-function leg extension machine or leg extension + leg curl two-in-one machine, including custom logo

Q: What is the MOQ and lead time?

A: Standard production cycle is 20 days, customized production cycle is about 30 days

Q: How is the quality?

A: From the receipt of raw materials to the production process and then to the delivery of finished products, the entire process goes through at least 8 quality inspection procedures, and the factory qualification rate is over 99%.

Q: What is the core advantage?

A: The full-chain cost control capability, rapid customization response efficiency, and quality control system that meets international standards can provide customers with cost-effective and stable supply chain support.