# data[].attributes.attachment_link.readable_text
doi: 10.3390/jfmk5030055.

Affiliations

¹ Graduate Institute of Sports Training, Institute of Sports Sciences, University of Taipei, 101 Zhongcheng Rd. Section 2, Shilin District, Taipei 111, Taiwan.

² Department of Ball Sports, University of Taipei, 101 Zhongcheng Rd. Section 2, Shilin District, Taipei 111, Taiwan.

³ Institute of Sports Equipment Technology, University of Taipei, 101 Zhongcheng Rd. Section 2, Shilin District, Taipei 111, Taiwan.

⁴ Department of Movement, Human and Health Sciences, University of Rome Foro Italico, Piazza Lauro De Bosis 6, 00135 Roma, Italy.

Free PMC article

Free PMC article

doi: 10.3390/jfmk5030055.

Affiliations

¹ Graduate Institute of Sports Training, Institute of Sports Sciences, University of Taipei, 101 Zhongcheng Rd. Section 2, Shilin District, Taipei 111, Taiwan.

² Department of Ball Sports, University of Taipei, 101 Zhongcheng Rd. Section 2, Shilin District, Taipei 111, Taiwan.

³ Institute of Sports Equipment Technology, University of Taipei, 101 Zhongcheng Rd. Section 2, Shilin District, Taipei 111, Taiwan.

⁴ Department of Movement, Human and Health Sciences, University of Rome Foro Italico, Piazza Lauro De Bosis 6, 00135 Roma, Italy.

Abstract

The validity and reliability of the Optojump system were investigated for jumping height and flight time in vertical jump tests. Conversely, the purpose of the present study was to investigate the validity and reliability of the Optojump system for measuring contact time and lateral displacement in change of direction and lateral jump tests. Thirty basketball collegiate athletes were tested on two 10 m sprints with a 60° (COD60) or 180° (COD180) change of direction, lateral controlled (CLRJ) and maximal (MLRJ) rebound jump, and lateral countermovement (LCMJ) and squat (LSJ) jump with the concomitant use of two force plates and the Optojump system for the measurement of contact time in COD60, COD180, CLRJ, MLRJ, and lateral jumping distance in all the lateral jump tests. Almost perfect coefficients (r ≥ 0.95) emerged for contact time in COD60, COD180, CLRJ, MLRJ, although a systematic bias was found for COD60 (-0.01 s). Good-to-excellent reliability was found for almost all the measurements of contact time and lateral jumping distance for change of direction and lateral jump tests. Therefore, the use of Optojump system for testing change of direction and lateral jumping abilities should be executed with caution, avoiding misinterpretation of data.

Keywords: concurrent validity; field-based approach; internal consistency reliability; optojump system; sport performance.

Conflict of interest statement

The authors declare no conflict of interest.

Similar articles

Validity and reliability of Optojump photoelectric cells for estimating vertical jump height.

Glatthorn JF, Gouge S, Nussbaumer S, Stauffacher S, Impellizzeri FM, Maffiuletti NA. Glatthorn JF, et al. J Strength Cond Res. 2011 Feb;25(2):556-60. doi: 10.1519/JSC.0b013e3181ccb18d. J Strength Cond Res. 2011. PMID: 20647944

Validity and reliability of the Myotest accelerometric system for the assessment of vertical jump height.

Casartelli N, Müller R, Maffiuletti NA. Casartelli N, et al. J Strength Cond Res. 2010 Nov;24(11):3186-93. doi: 10.1519/JSC.0b013e3181d8595c. J Strength Cond Res. 2010. PMID: 20940642

Measurement errors when estimating the vertical jump height with flight time using photocell devices: the example of Optojump.

Attia A, Dhahbi W, Chaouachi A, Padulo J, Wong DP, Chamari K. Attia A, et al. Biol Sport. 2017 Mar;34(1):63-70. doi: 10.5114/biolsport.2017.63735. Epub 2016 Dec 1. Biol Sport. 2017. PMID: 28416900 Free PMC article.

Validity, Reliability, and Usefulness of My Jump 2 App for Measuring Vertical Jump in Primary School Children.

Bogataj Š, Pajek M, Hadžić V, Andrašić S, Padulo J, Trajković N. Bogataj Š, et al. Int J Environ Res Public Health. 2020 May 25;17(10):3708. doi: 10.3390/ijerph17103708. Int J Environ Res Public Health. 2020. PMID: 32466091 Free PMC article.

Determinants of the abilities to jump higher and shorten the contact time in a running 1-legged vertical jump in basketball.

Miura K, Yamamoto M, Tamaki H, Zushi K. Miura K, et al. J Strength Cond Res. 2010 Jan;24(1):201-6. doi: 10.1519/JSC.0b013e3181bd4c3e. J Strength Cond Res. 2010. PMID: 19996782

References

Poliquin C., Patterson P. Terminology: Classification of strength qualities. Strength Cond. J. 1989;11:48-52. doi: 10.1519/0744-0049(1989)011<0048:COSQ>2.3.CO;2. - DOI

Komi P.V., Bosco C. Muscles by men and women. Med. Sci. Sport. 1978;10:261-265. - PubMed

Chaabene H. Change of direction tasks: Does the eccentric muscle contraction really matter. Sci. Pages Sports Med. 2017;1:1-2. doi: 10.36959/987/222. - DOI

Paul D.J., Gabbett T.J., Nassis G.P. Agility in team sports: Testing, training and factors affecting performance. Sports Med. 2016;46:421-442. doi: 10.1007/s40279-015-0428-2. - DOI - PubMed

Sheppard J.M., Young W.B. Agility literature review: Classifications, training and testing. J. Sports Sci. 2006;24:919-932. doi: 10.1080/02640410500457109. - DOI - PubMed

# data[].attributes.attachment_link.keywords[]
national center for biotechnology information

# data[].attributes.attachment_link.title
Validity and Reliability of a Photoelectric Cells System for the Evaluation of Change of Direction and Lateral Jumping Abilities in Collegiate Basketball Athletes - PubMed

# data[].attributes.attachment_link.description
The validity and reliability of the Optojump system were investigated for jumping height and flight time in vertical jump tests. Conversely, the purpose of the present study was to investigate the validity and reliability of the Optojump system for measuring contact time and lateral displacement in ...