CORE ASSESSMENT 3: CORE MUSCLE POWER

Test that have focused on core power have utilized some type of medicine ball throw (Shinkle et al. 2012; Cowley and Swensen 2008). Shinkle et al. completed a series of static and dynamic medicine ball throws from a seated position on a bench. Four throws were completed:

- A forward throw (figure a)

- A backward throw (figure b)

- Lateral throws to the right and left to the left (figure c)

Using a 6-pound (2,7 kg.) medicine ball. The upper body was held stationary for the static throws, preventing the core muscles from contributing to the throw. For the dynamic throws, the upper body was free to move, allowing contribution of the core muscles. The feet were not secured during any of the throws. Maximum distance for each throw was recorded. Differences between the static and dynamic throws were believed to be due to the core’s contribution.

Image A

Image B

Image C

 Images taken from: (Willardson & National Strength & Conditioning Association (U.S.), 2014, pp. 26–27)

Cowley and Swensen (2008) completed the forward medicine ball throw. The throw was performed sitting on a mat, knees bent at 90 degrees and feet shoulder-width apart. To complete the forward throw; the participant kept the elbows extended, ‘cradled’ the ball with the hands, and leaned back into a supine position (figure d-a). When ready the participant contracted the abdominals and hip flexors, moving the upper body upward with the arms extended overhead (figure d-b). The shoulders were not allowed to extend. Maximum throw distance was measured for all throws in each study.

Image D

 Images taken from: (Willardson & National Strength & Conditioning Association (U.S.), 2014, pp. 28)

As a conclusion, a number of static and dynamic test are available to assess the core. The type of assessment selected is dependent upon individual needs and availability of equipment. Additionally, the form of assessment should be as specific as possible to the sport or activity.

Isometric testing of the core is suitable for people of all fitness levels. This form of testing does not require special equipment, and it is the most widely used. Conversely, the results of isometric testing are difficult to apply to any movement-based activity. For people with a higher level of fitness or people who participate in sports, dynamic assessment would be the best choice. The test selected must depend on the activity of the person.

BIBLIOGRAPHY

Willardson, J. M., & National Strength & Conditioning Association (U.S.). (2014). Developing the core.