Interlimb asymmetries have been recently investigated in athletic populations. However, the effects of training interventions on interlimb asymmetries have been scarcely examined. Therefore, the aim of this study was to determine the effects of training interventions on changes in interlimb asymmetries from pre- to post-training. Furthermore, to examine the effects of training programs on intervention groups compared with control groups. A database search was completed (MEDLINE, CINAHL, and SPORTDiscus). Eight studies were then included in the meta-analysis. Results showed small reductions in interlimb asymmetries in single-leg broad jump (SLBJ) and change of direction (COD) speed from pre- to post-training interventions, whereas moderate effects were found in single-leg countermovement jump (SLCMJ) and SL lateral jump. When comparing the training interventions with the control groups, results showed small effects in favor of the training groups for reducing interlimb asymmetries in SLBJ and large effects in SLCMJ and COD speed. Thus, training interventions can evoke small to moderate reductions in interlimb asymmetries from pre- to post-training programs. Strength training performed unilaterally or bilaterally may elicit these reductions. Furthermore, training interventions showed larger effects compared with the control groups in reducing interlimb asymmetries. However, further research is needed.

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NSCA certifications can help differentiate you from the competition while joining the ranks of some of the top experts in the industry. Learn about the strength and conditioning certifications offered by the NSCA.

Download this free packet of sample documents and information to use when proposing a new position, including: case studies of successful programs, a sample job description, evidence-based reasons why your high school needs a qualified strength and conditioning professional, and a quick worksheet to assess current liability risk.

To apply you will need to fill out the online application, but first, please read the qualifications to ensure you are eligible. Applicants must achieve and maintain the NSCA certified Strength and conditioning Specialist (CSCS )certification. RSCC coaches will need to meet CEU requirements for the CSCS and recertify every three year cycle as well as complete the RSCC renewal course each year.There is a $100 application fee for RSCC and RSCC* applicants. There is no fee for RSCC*E applicants.

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Built on scientific principles and evidence-based research, the NSCA’s Tactical Strength and Conditioning (TSAC) Practitioners Course is a foundational strength and conditioning program designed to provide tactical facilitators with the tools to decrease injury risk and increase longevity and effectiveness of tactical professionals.