*Practical Implication*

The presented experimental training program can be implemented to improve the quality of kickboxing training in terms of improving general and special physical fitness in the preparation period.

**Supplementary Materials:** The following are available online at https://www.mdpi.com/article/10 .3390/ijerph19084526/s1, Video S1:1 workout, Video S2: 2 workout, Video S3: 3 workout.

**Author Contributions:** Conceptualization, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), W.C., H.D.; methodology T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), W.C.; software, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski); validation, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), A.K. (Agnieszka Koteja), M.S.; formal analysis, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), J.J.-N.; investigation, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), A.K. (Agnieszka Koteja); resources, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), W.C., J.J.-N., M.S.; data curation, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), D.A., H.D; writing—original draft preparation, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), D.A., J.J.-N., A.R.; writing—review and editing, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), D.A., J.J.-N.; visualization, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), A.R.; supervision, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), W.C., J.J.-N.; project administration, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski); funding acquisition, T.A., Ł.R., A.K. (Amadeusz Kwiatkowski), W.C., M.S. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** The research was approved by the Bioethics Committee at the Regional Medical Chamber (No./309/KBL/OIL/2019).

**Informed Consent Statement:** Informed consent was obtained from all subjects involved in the study.

**Data Availability Statement:** The data presented in this study are available on request from the corresponding author.

**Conflicts of Interest:** The authors declare no conflict of interest.
