? In fitness exercise, many people list abdominal muscle exercise as a necessary action every time. Despite this, there are still many fitness enthusiasts who know little about the movements of abdominal muscle exercise. For example, posture, skills, how different movements stimulate abdominal muscles in different parts, which action stimulates abdominal muscles the most, and so on. If you want to practice abdominal muscles well, you must first understand the role of abdominal muscles. Abdominal muscles include rectus abdominis, oblique external abdominal muscles, oblique internal abdominal muscles and transverse abdominal muscles. When they contract, they can bend and rotate the trunk to prevent the pelvis from leaning forward. Abdominal muscles also play an important role in the activity and stability of lumbar spine, and can also control the activity of pelvis and spine. Abdominal muscle weakness may lead to pelvic forward tilt and increase the physiological curvature of lumbar spine, increasing the chance of low back pain.

Let's compare five kinds of abdominal exercises to see which one can strengthen rectus abdominis more effectively.

Boarding service:

Lie on your back on the floor with your lower back close to the ground. Put your hands on your head and open your arms. Lift your legs and climb on the bike slowly. Exhale, lift your upper body, touch your left knee with your right elbow (Figure 1), keep your posture for 2 seconds, and then restore. Touch the right knee with the left elbow again, hold it for 2 seconds, and then slowly return to the starting position.

Abdominal rolling of fitness ball:

Lie flat on the fitness ball, put your feet flat on the ground, put your hands on your head and open your arms. Reduce the chin to the chest, exhale, contract the abdominal muscles, raise the upper body by about 45 degrees (Figure 2), hold it for 2 seconds, and then slowly return to the starting position. In order to keep balance, your feet can be separated more. If it is difficult, you can do it with your feet together.

? Leg lifting and belly rolling:

Lie on your back on the floor with your lower back close to the ground. Put your hands on your head and open your arms. Raise your legs at 90 degrees to your upper body, cross your legs, and bend your knees slightly. Exhale, contract the abdominal muscles, lift the upper body, keep the lower back off the ground (Figure 3) for 2 seconds, and then slowly return to the starting position. Keep your chin down to your chest.

Reverse abdominal roll:

Lie on your back on the floor with your lower back close to the ground, put your hands on your sides, raise your legs at 90 degrees to your upper body, cross your legs, and bend your knees slightly. Tighten the abdominal muscles, then exhale, slightly lift the hips, slightly lift the waist and back off the ground (Figure 4), hold for 2 seconds, and then slowly return to the starting position.

Traditional belly roll:

Lie on your back on the floor with your lower back close to the ground. Put your hands on your head and open your arms. Put your legs flat on the ground and bend your knees. The chin shrinks to the chest, contracts the abdominal muscles, exhales and lifts the upper body, and the lower back can't leave the ground (Figure 5), and then slowly returns to the starting position.

? In fact, in order to achieve the best results, it is recommended to try to do various kinds of exercises regularly, because it can exercise different muscles and is not easy to get bored. No matter which exercise method you choose, it takes time and patience to exercise and strengthen your abdominal muscles. Remember, the training goal of abdominal muscles is muscle endurance, not muscle and strength. Finally, remember to stretch your muscles after exercise.