Behavior of creatine kinase in a variable resistance session

Nueva publicación de nuestro compañero de la Red Pleokinetic Dr. Álvaro Huerta con su "Grupo de Investigación en Salud, Actividad Física y Deporte" (ISAFYD) de la Escuela de Educación Física de la Universidad de Las Américas, Chile. El trabajo ha sido publicado en la revista japonesa The Journal of Physical Therapy Science en su número 31 de este año.

 

Abstract

Purpose: The purpose of this study was to determine the behavior of creatine kinase before and after the execution of a pre-activation protocol with intra-set variable resistance in order to generate post-activation potentiation in female athletes.

Participants and Methods: Six sprint women were part of the study. The study had a quasi-experimental intra-participant design. The experimental condition included a pre-activation with intra-set variable resistance + 1 minute rest + 30-m sprint × 3. The variables were metabolic creatine kinase, total creatine kinase, and 30-m sprints. 

Results: Both the experimental condition and the control condition showed an increase in creatine kinase and total creatine kinase 24 hours post-effort. Only the experimental condition showed improvement in 30-m sprints after the pre-activation with intra-set variable resistance. 

Conclusion: All those sessions oriented to increasing strength levels with a pre-activation protocol through intra-set variable resistance must consider rests longer than 24 hours between sessions in order not to increase creatine kinase in female athletes significantly.

Key words: Resistance training, Creatine kinase, Athletes