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Find out here everything about Crunch machine.
If you want to learn more about abdominal exercises similar as Crunch machine visit TIPS section in www.sportize.me just by clicking HERE.
In this article we are going to show you how to make Crunch machine:
Learn Crunch machine just in 5 seconds: Video
Summarized explanation
Sitting on the machine, we focus our effort on the abdominals but we can help ourselves with our arms.
Step by step
1-Sitting on the indicated machine, lean hands on the support and anchor feet under the rollers.
2-Flex trunk curving spine and getting near your thighs.
3-Return to initial position.
| Must Take body forward. Crouch with hip axle |
Don´t Brusquely flex trunk |
Tips We pull with the abdominals, avoiding thrusts |
Extended Explanation
Sitting on the machine, hands on handles, feet fixed under the rollers, adjust weight and supports. Inhale and curb spine trying to make breastbone and pubis meet. Exhale at the end of movement. Flex trunk trying to concentrate on the abdominals, then return to the vertical with control. This exercise is excellent because it permits weight to adapt to the person who is doing it. Therefore, you can work with light weights for the beginners or more heavier weights for the professionals.
Basic Muscles Explanation
The long and fine abdominal rectus goes vertically along the abdominal wall, starting in the pubic bone and ending in the cartilage of the fifth, sixth and seventh ribs and the breastbone. The two halves are separated by a tendinosus parallel band, crossed by three tendinosus lines that give the characteristical divisions in a defined middle section.
Muscles & Joint Actions
When head and shoulders descend and near the thighs, the abdominals flex the lumbar and thoraxic zones of the spine to do the crunch.
Sport Uses
Crunches are beneficial in bodybuilding and fitness in general to obtain strong and well developed abdominals. Abdominals play an important role in spine flexions and an important action in gymnastics, trampoline jumps, wrestling and martial arts. Crunches are also useful in some sport abilities such as pitching and batting in baseball, soccer throw-ins, shot-puts and javeline throwing (golf and boxing)
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