If you want good separation between your quadriceps and hamstrings, first make sure you are concentrating and that you’re really feeling weight on each rep. That is how you will create more detail. If you lift with explosive contractions, you won’t really fell the muscle, just the weight. You will get bigger but not necessarily better separation. For legs, use high repetitions on drop sets to fully engage and fatigue the muscles. Aim to do more than 15 reps per set so that you feel the burn. Plus, high rep training for legs helps to burn through more glycogen (stored sugars in the muscles) and total calories to help you get leaner overall.
1) Perform an equal number of exercises with the same relative intensity between opposing muscle groups (eg, back and chest, hamstrings and quads, biceps and triceps). If you already have a deficit, try to do more sets on the weaker/disregarded bodyaprt until you have achieved better balance. Then train bodyparts equally.
2) To bring your training into balance, focus on isolation (single-joint) exercises while also modifying the compound movements that target the various muscle groups. For example some exercises, such as the squat and leg press, are generally regarded as quadriceps moves, even though they absolutely involve the hamstrings and glutes. However, by altering foot placement (wider, higher on platforms etc.) you can shift the emphasis to the less involved hamstrings.
3) If you have an existing deficit between opposing muscle groups, spend some extra time stretching the stronger muscle group and strengthening the weaker one.
4) If you find a specific bodypart to be particularly stubborn at responding to an adequate training stimulus, consider adding an extra day (or two) specifically dedicated to working the stubborn bodypart until it catches on.
I think it is a good idea to add one of those mass builders in there. For one, with the romanian deadlift the hamstrings get worked from the hips, not the knees. This means you are working them completely in a different manner than with leg curl movements, even though both target the hamstrings. It helps with shaping the hamstrings and your glute-ham tie-in as well. I don’t think RDLs add too much mass to the bodypart it gives the illusion, which is important in bodybuilding. Sometimes the tape measure does not matter. It is all about the appearance.
Competitive bodybuilders usually train for symmetry and proportion in an effort to build an aesthetically pleasing physique. There are many individuals who go to the gym to build up their beach muscles, disregarding symmetry and proportion in designing their training programs. Instead of training opposing muscle groups equally, they sometimes ignore the muscles they cannot see (back, hamstrings, calves, quads) and focus on the muscles they admire in the mirror everyday (chest, biceps, shoulders and abs). Although training specific muscle groups more than others can create an unbalanced-looking physique, disregarding a muscle group over time can potentially lead to other problems that may subject the body to injury.
One common mistake with regard to balanced training is performing an unbalanced training program between the chest and back muscles. The amount of time, energy, effort, volume and frequency between the agonist chest muscles and the antagonists back muscles may not be equal, or even close. A simple example would be an athlete who performs 4 sets os four exercises for the chest (for a total number of 16 sets) and does only 3 sets of three exercises for the back (for a total number of 9 working sets). Following this unbalanced training regime over time will result in back muscles much weaker than the chest muscles. This imbalance may lead to a slightly kyphotic posture (forward/rounded shoulders) that can potentially cause shoulder problems because of the faulty posture. In addition to the stronger chest muscles (compared to the back muscles) pullong the shoulders forward, inadequate stretching of the chest musculature can further contribute to this problem.
For some people, training legs consists of quads and that is it. The disregard their hamstrings while training only the quadriceps. Exercises such as the leg extensions, hack squats and front squats place a large amount of emphasis on the quads. Although these exercises are great you need to do an equal amount of hamstring work with leg curls and romanian deadlifts to stress both muscle groups. Distributing attention evenly to both muscle groups can give you healthier knees and lower back, as well as fewer hamstring strains because of an unbalanced hamstring-to-quad strength ration.
A less obvious training error woth regard to balanced training concerns the shoulders. Overhead shoulder press, incline bench press, flat bench press and other chest and shoulder pressing movements are critical for maximal muscle development. However, these exercises focus on the major muscle groups such as the deltoids, pectoralis major, pectoralis minor and other muscles known as prime movers. Often ignored in a training regime is the training or isolation of the smaller muscle groups in the shoulder known as the rotator cuff (the supraspinatus, infraspinatus, teres minor and subscapularis) that are critical in keeping the upper arm in the socket of the shoulder. Failure to train these smaller muscles groups, two of which are not even visible can create an imbalance between the large prime movers and small stabilisers. This lack of imbalance in strength may result in bursts of bursitis, tendinitis or even rotator cuff tears in the shoulder joint.
Quads, hamstrings, glutes primarily. Back secondarily.
Best in Workout:
Perform the barbell squat early in your workout. As it is a full-body move, it is best done with heavy weight,. Also it is tough on the lower back, so you want to be fresh as possible on each set.
Sets & Reps:
Performs 3-4 sets with 6-12 reps.
Space your feet shoulder-width apart and firmly plant them on the floor, then drop into a squat position. You need a firm foundation and it starts with your feet. If you are new to this move, or deadlift-type exercises in general, you might notice that your heels tend to rise off the floor at the start. Work to keep your feet flat, this will get easier as you warm-up and become more accustomed to the move.
With your arms fully extended, grasp the bar using a pronated grip just outside your legs, locking your thumbs around the bar. This position should resemble the start of a deadlift, only with the bar behind you. Many people make the mistake of trying to use their arms to pull the bar up. If you bend your arms in an attempt to raise the bar, you won’t be as nearly as strong as you could be. Your arms should act as hooks, attaching yourself to the bar.
Inhale deeply, holding your breath as you begin the move. You want to hold your breath at the start of the move. Not only are you stronger when you do so, but it will also increase your intra-abdominal pressure and stabilise your spine while protecting you from injury. As you begin the descent towards the start (bottom) of the move you will also naturally and necessarily hold your breath.
Drive through your heels, extending your hips and knees simultaneously until you are standing erect with the bar, exhaling at the top of the motion. At this point, the bar should be just under your glutes. The barbell hack squat is very similar to the deadlift, in that it is a pressing move for the legs. Again, if you try and pull the weight up with your upper body without concentrating on the legs, you will defeat the purpose of this exercise, not to mention risk injury. Remember to squeeze the quads, hams and glutes at the top as you catch your breath. Use pulling straps, since the amount of weight you can press with your legs will probably exceed how much weight you can hold in your hands.