Reliability and validity of “My Jump 2” application for countermovement jump free arm and interlimb jump symmetry in different sports of professional athletes

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Sports Medicine and Rehabilitation

Main article text

 

Introduction

Methods

Experimental protocols

Subjects

Experimental equipment

Procedures

Statistical analysis

Statistical analysis of CMJAM test-related data

Statistical analysis of data related to lower limb symmetry test

Results

CMJAM test-related data results

Results of data related to lower limb symmetry test

Discussion

Conclusion and suggestion

Supplemental Information

Take-off and landing phase frames on the My Jump 2 app.

DOI: 10.7717/peerj.17658/supp-1

Additional Information and Declarations

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Yong Peng conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft.

Shaotong Sun conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft.

Yudi Wang conceived and designed the experiments, analyzed the data, authored or reviewed drafts of the article, and approved the final draft.

Ya xuan Qin conceived and designed the experiments, performed the experiments, prepared figures and/or tables, and approved the final draft.

Di Qin conceived and designed the experiments, performed the experiments, analyzed the data, authored or reviewed drafts of the article, and approved the final draft.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

The informed consent documents were signed and obtained the ethical approval (RT-2022-05) of the ethics committee of Nanjing Sports Institute before the test.

Data Availability

The following information was supplied regarding data availability:

The raw data is available in the Supplemental File.

Funding

This work was supported by the Jiangsu collaborative Innovation Center for Sports and Health Project Youth Fund (JSCIC-YP21001), and the “1+1” excellent academic team of Nanjing Sport Institute (XSTD202317). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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