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Sit-up form. The sit-up is an abdominal endurance training exercise to strengthen, tighten and tone the abdominal muscles.It is similar to a curl-up (that target the rectus abdominis and also work the external and internal obliques), but sit-ups have a fuller range of motion and condition additional muscles.
The chest fly is performed while lying face up on a bench or standing up, with arms outspread holding weights, by bringing the arms together above the chest. This is a compound exercise for the pectorals. Other muscles worked include deltoids, triceps, and forearms. Equipment: dumbbells, cable machine or "pec deck" machine.
Muscles involved in the front plank include: [7] Primary muscles: erector spinae , rectus abdominis (abs), and transverse abdominis . Secondary muscles ( synergists / segmental stabilizers ): trapezius (traps), rhomboids , rotator cuff , the anterior, medial, and posterior deltoid muscles (delts), pectorals (pecs), serratus anterior , gluteus ...
The leg raise is a strength training exercise which targets the iliopsoas (the anterior hip flexors).Because the abdominal muscles are used isometrically to stabilize the body during the motion, leg raises are also often used to strengthen the rectus abdominis muscle and the internal and external oblique muscles.
A common exercise using the Roman chair for targeting the abdominal muscles is the "Roman chair sit-ups". It is an old-school exercise known to strengthen the belly. It can also strengthen some secondary stabilizer muscles in the core.
This exercise is also known as a "V-Up". Jackknife exercises are designed to strengthen the upper and lower abdominal muscles , particularly the transversus abdominis muscle . There are a number of variations of jackknife exercises that allow people of different ages and ability to work their abdominal muscles.
The crunch or curl-up is an abdominal exercise that works the rectus abdominis muscle. [1] It enables both building and defining "six-pack" abs and tightening the belly. Crunches use the exerciser's own body weight to tone muscle and are recommended by some experts [ like whom? ] , despite negative research results [ citation needed ] , as a ...
Variations of the bench press involve different groups of muscles, or involve the same muscles in different ways: Inclination. Flat bench press: The flat bench press involves both portions of the pectoralis major muscle but focuses on the lower (sternal) head as well as the anterior deltoid muscle. The term 'bench press' on its own is assumed ...