The exercise known as squats which people call the “king” functions as one of the techniques that can help people build strong and defined quadriceps muscles. Back problems affect many people who perform squats while some individuals cannot feel their quadriceps muscles working during the workout. You have options to strengthen your thigh muscles through various exercises because you have limited fitness equipment or experience knee problems or wish to explore different methods for leg training.
The Step-Up

You need to locate a strong box or bench for this exercise. The step up process requires you to use one foot for body elevation through heel lifting before you return to ground level. This exercise develops functional strength because it enables people to execute everyday activities which include stair climbing. The exercise allows you to work on each leg separately which helps to correct muscle strength differences between your left and right legs.
Walking Lunges

Lunges are a classic for a reason. The front leg quadriceps muscles undergo ultimate stretching when you perform a long forward step while dropping your back knee towards the ground. The torso should remain upright because it helps maintain focus on thigh muscles while preventing glute muscle activation.
Leg Extensions

The exercise functions as one of the rare “isolation” workouts which specifically targets quadriceps muscles while excluding hip and glute activation. The exercise machine will make you feel deep muscle “burn” when you extend your legs against resistance. The exercise serves as an effective finishing exercise because it achieves complete quad muscle exhaustion after a workout session.
Bulgarian Split Squats

This exercise requires a “split” movement pattern instead of following traditional squat techniques. You should elevate your rear foot on a bench to perform a lunge with your front leg. The exercise requires your body weight to be distributed almost entirely on one quadriceps muscle which makes it one of the most difficult exercises for building muscle strength.
Leg Press

The leg press machine enables users to lift heavy weights without the need to balance a barbell while doing the exercise. The platform requires you to position your feet at a lower point to achieve targeted results for your quadriceps muscles. The maneuver increases knee flexion which forces your quadriceps muscles to handle most of the pushing effort.
Sled Pushes

If you want to build “explosive” power, find a weighted sled and push it across the gym floor. The exercise consists of concentric movement which produces substantial strength gains without causing muscle soreness for the next day. The walking exercise produces an intense quad contraction because your quadriceps muscles must perform maximum contraction during each step.
Spanish Squat (Isometric Hold)

The activity requires you to secure a heavy resistance band around a pole while positioning it behind your knees. The sitting position requires the person to lean back against the resistance while sitting in mid-air. The exercise creates strong quad muscle tension because it prevents any joint movement which makes it popular among physical therapists who treat knee pain.
Wall Sits

This assessment evaluates both mental strength and physical strength. You should lean against the wall until your thighs reach a position that matches the floor’s horizontal plane. The position requires the quadriceps muscles to function under isometric tension during the entire time. The exercise acts as an ideal training method to enhance stability which skiers and hikers need for their activities.
Sissy Squats (Bodyweight)

The exercise name creates a false impression which suggests it is an easy workout while it actually presents extreme difficulty for quadriceps training. You should hold onto a sturdy object while you lean your torso back to drive your knees forward until you reach your toes. The exercise forms a huge stretch across your quadriceps which no other exercises can match.