What is Shiko? The Physical and Mental Benefits of Sumo’s Fundamental Movement

Introduction
               

Supervisor・Tsuyoshi Mizuguchi

He began practicing sumo in sixth grade, later advancing to Hotoku Gakuen High School and Ritsumeikan University before joining the Kasugayama stable to enter professional sumo. After retiring in 2016, he appeared in a popular subscription-based drama series titled Sanctuary. Currently, he runs his own YouTube channel, “Osumo Gucchan-neru,” where he shares videos on sumo training, techniques, and his experiences from his time as a professional wrestler.

Shiko is a signature move in sumo where wrestlers raise one leg high and stomp the ground with force. This simple yet profound motion carries deep cultural meaning and offers remarkable benefits for both the body and mind. Practicing Shiko improves lower-body strength, core stability, flexibility, and also sharpens mental focus through controlled breathing and precise movement.

History and Cultural Background of Shiko

The origins of Shiko are ancient, tracing back to Japanese religious rituals and agricultural ceremonies. The act of raising one leg high and stomping the ground carries the ritual meaning of pacifying the earth and driving away evil spirits.

By the Edo period, when sumo developed as both martial art and entertainment, Shiko had already been established as a basic training practice for wrestlers. During the ring-entering ceremony, Shiko showcases the wrestler’s presence and fighting spirit.

Top-ranked wrestlers such as yokozuna and ozeki perform Shiko with a deeply lowered stance and a high leg raise, expressing both power and stability. This movement combines beauty and strength, making it a symbolic gesture in sumo culture.


Correct Way to Perform Shiko

Shiko is a full-body movement that engages multiple muscle groups. Below is the basic form:

StepMovementKey Points
1Stand with feet wider than shoulder widthKeep weight balanced
2Slowly raise one legStraighten the knee, point toes outward
3Stomp the raised leg downExhale while stomping
4Repeat with the opposite legAlternate left and right
5Continue for about 10 repsBeginners should focus on form over numbers

Beginners should avoid raising the leg too high to prevent strain on the hips and knees. As you progress, focus on both the height of the leg raise and the depth of the squat to increase the intensity.


Muscle Groups Worked by Shiko

Shiko is not just a lower body exercise—it also works the core and upper body.

Main Muscle GroupBenefit
QuadricepsImproves lower-body stability and pushing strength
HamstringsEnhances running and jumping ability
Gluteus maximusImproves posture and stabilizes pelvis
Transverse & rectus abdominisStrengthens core and prevents back pain
AdductorsIncreases hip flexibility

Thus, Shiko is a comprehensive exercise that trains from the lower body up through the core.


Health Benefits

The benefits of Shiko go beyond athletics and into daily life:

  • Fall prevention
    Common in older adults due to reduced leg strength and balance—Shiko helps train both.
  • Improved circulation and warmth
    Moving large muscles in the thighs and hips boosts blood flow and helps maintain body temperature.
  • Lower back pain prevention
    Flexible hips and stable pelvis reduce strain on the lower back.

How to Incorporate Shiko into Daily Life

Shiko requires no special equipment or large space, making it ideal for home practice.

  • 10 reps in the morning as a warm-up
  • 5 reps during work breaks
  • After-bath stretching routine

For those with limited mobility, simply lowering into a deep squat without lifting the leg high can still be effective. Consistency is key for results.


Safety Precautions

While generally safe, improper form can cause injury.

PrecautionReason
Avoid lifting the leg too highReduces strain on hips and back
Do not hold your breathPrevents dizziness
Practice on a non-slip surfacePrevents falls
Reduce reps when fatiguedAvoids muscle strain

Conclusion

Shiko is both an iconic sumo movement and a highly effective full-body exercise. With proper form and breathing, it can be practiced by anyone regardless of age or fitness level. Incorporating Shiko into your routine can lead to improved fitness, better posture, and enhanced mental focus.

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