LOWER BODY MACHINES KEISER STRENGTH THE SAFEST AND MOST EFFECTIVE QUAD WORKOUT PUSHING THE LIMITS OF HUMAN PERFORMANCE At Keiser, we’re constantly innovating to reach the next level of human performance. We’re never satisfied with the status quo. Even if it’s our status quo. Because… Strong can be stronger. Fast can be faster. Power can be more powerful. Because science is on our side. Because… ‘Good Eno

STRENGTH Only Keiser’s Dynamic Variable Resistance safely builds strength at any speed, which is the key to building maximum power (Force x Velocity). Keiser strength machines enable you to develop power, and Power is the key to Performance. LOWER BODY MACHINES MAXIMIZE QUAD RESULTS This Leg Extension is the best to demonstrate the superiority of Keiser Dynamic Variable Resistance over Iron. The quadriceps is one of the most powerful muscle groups in the body, producing very high forces at very fast speeds. The knee is vulnerable to injury at high degrees of flexion, which is why we lower the...