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tendon exercised Pectorals, triceps, biceps and deltoids. These muscles argon located in your shoulders, arms and thorax. Method Lie bulge on the bench, make sure your comfortable as you do not want to be adjusting during reps. purse barbell roughly 8 inches apart, again make sure your grip is secure and comfortable. Lower the bar soft and smoothly directly over your chest and in the same rhythm up to the top again. try to remain smooth in your transaction from the big money to the up as if you argon doing it in a jerking action you my cause injury.Your back should remain in contact with the bench at whole times and your arms should not lock. Notes Your biceps and pectorals are admirer when your on the way down with bar and on the way up they are antsupporter. your biceps are synergist with your triceps because when your biceps are agonist your triceps are antagonist and vice versa. Deltoids are agonist when the bar is on the way up and antagonist when the bar is on the way down. Muscle exercised Rectus abdominis Method Standard sit ups consist of lying flat on your back with your legs bent up at the knees in a triangle shape.You then bring your chest up too your knees, this should be done with your arms across you chest because if they are behind your full point it is easy to pull your head up and fund your neck. Obviously you then reverse the action going back down stressful to keep your back slightly of the ground each time as to feel the full effects of each sit up. Notes The rectus abdominis is agonist on the way up in the standard sit up and is antagonist on the way back down. This means that on the way up it shortens to allow the driving force to take place and then on the way down the muscle will relax again.The top hat example of agonist and antagonist movements is in a twist sit up. This is because when your internal oblique is agonist your external oblique is antagonist and vice versa. Muscles exercised Rectus thighbone, vastus laterali s, vastus medialis, vastus intermedius, semimembranosus, semitendinosus and biceps femoris Method In a squat you counterbalance by putting the maximum or close to the maximum weight you can lift on a barbell. You should then place the barbell across your shoulders you will then lower yourself to a close to sitting position. During this the torso must be kept straight as not to put any strain on your back.You then slowly rise back up to the starting position and repeat. Notes The quadriceps are agonist when on your dip and on the extension back up they are antagonist. Simultaneously to this your semimembranosus, semitendinosus and biceps femoris otherwise known as your hamstrings are doing the opposite. The muscles of your abdomen are synergists that work together to allow the agonist to operate more effectively. Muscles exercised Gastrocnemius, soleus and tibialis anterior Method Nautilus workout machines target all the muscle groups in the leg. The machine best suited for these m uscles is the nautilus calf machine. et up the machine by putting the pin in the stack at the weight most appropriate for you. Then measuring stick up on to the calf raise platform and put your shoulders under the pads making sure the gist of each foot rests on the platform. You then proceed to push up so you are on your get onto toes, slowly lower your feet back down to finish repartition. Notes When going up on to your tip toes your soleus and tibialis anterior are the muscles that are agonist and your gastrocnemius is antagonist. When lowering back down to flat footed the roles of the agonists and antagonists are reversed.