Neuromuscular Strength Factors Influencing Vertical Jump Performance
24. april 2026 oppdatert av: Ramiz ARABACI, Uludag University
The Relationship Between Lower-Limb Muscle Strength and Related Parameters With Vertical Jump in Young Adult Males
This cross-sectional observational study is designed to comprehensively analyze the relationship between high-volume isokinetic muscle performance and explosive vertical jump capacity in healthy, recreationally active young adult males.
While traditional neuromuscular assessments frequently emphasize momentary peak force (Peak Torque), this study investigates the hypothesis that sustained mechanical work capacity (Total Work) and fatigue resistance (Fatigue Index) are more robust predictors of complex explosive tasks such as the countermovement jump (CMJ).
Methodology and Testing Protocol:
Participants will complete all assessments in a single laboratory session under controlled environmental conditions. The standardized testing sequence is as follows:
- Anthropometric and Body Composition Assessment: Participants' height, body mass, and body fat percentage will be measured using a multi-frequency bioelectrical impedance analyzer (InBody 270) following standard manufacturer protocols.
- Countermovement Jump (CMJ) Test: Following a standardized dynamic warm-up, participants will perform the CMJ test on a validated contact mat system (SmartJump). Participants will start from a standing position with hands placed on the hips to eliminate the influence of arm swing. They will perform a quick downward countermovement to approximately 90 degrees of knee flexion and execute a maximal vertical jump. Three trials will be conducted with a 30-second rest interval between attempts, and the highest jump will be recorded for analysis.
- Isokinetic Muscle Strength and Fatigue Test: After a 5-minute cycle ergometer warm-up, participants will undergo isokinetic testing on a computerized dynamometer (Humac Norm). Following familiarization trials, participants will execute a high-volume fatigue protocol consisting of 50 continuous, maximal concentric knee flexion and extension repetitions at an angular velocity of 180°/sec for both legs.
Primary Variables Analyzed:
From the isokinetic protocol, the primary variables of interest include Peak Torque (Nm), Average Power (W), Total Work (Nm), and the Isokinetic Fatigue Index (%). These mechanical metrics will be statistically analyzed against the maximum CMJ height (cm) to evaluate the predictive strength of sustained mechanical work capacity versus momentary force production on explosive motor performance.
Studieoversikt
Status
Fullført
Forhold
Studietype
Observasjonsmessig
Registrering (Faktiske)
81
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
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Bursa, Tyrkia (Türkiye)
- Bursa Uludag University
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Voksen
Tar imot friske frivillige
Ja
Prøvetakingsmetode
Ikke-sannsynlighetsprøve
Studiepopulasjon
The study population consists of healthy, recreationally active young adult males (mean age of approximately 24 years).
Participants are moderately to highly physically active individuals (e.g., engaging in walking or jogging 1-2 times weekly) with no recent history of musculoskeletal pain, lower body surgery, or consumption of ergogenic aids.
Beskrivelse
Inclusion Criteria:
- Healthy young adult males
- Moderately or highly physically active (e.g., walking or jogging 1-2 times weekly)
- No consumption of any ergogenic aids or stimulants in the past 6 months
Exclusion Criteria:
- Presence of any musculoskeletal pain
- History of major lower body surgery within the last six months
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
Kohorter og intervensjoner
Gruppe / Kohort |
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Study cohort
Healthy, recreationally active young adult males who underwent body composition, countermovement jump (CMJ), and isokinetic muscle strength testing
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
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Isokinetic Extension Total Work (ETW)
Tidsramme: Baseline (Single laboratory visit)
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The total mechanical work capacity of the knee extensor muscles, measured in Newton-meters (Nm) over a 50-repetition maximal isokinetic protocol at 180°/sec.
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Baseline (Single laboratory visit)
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Countermovement Jump (CMJ) Height
Tidsramme: Baseline (Single laboratory visit)
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Maximum vertical jump height achieved during the CMJ test, measured in centimeters (cm) using a contact mat system.
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Baseline (Single laboratory visit)
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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Sponsor
Publikasjoner og nyttige lenker
Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.
Generelle publikasjoner
- Bohannon, N. A., Gillen, Z. M., Shoemaker, M. E., McKay, B. D., Gibson, S. M., & Cramer, J. T. (2020). Test-Retest Reliability of Static and Countermovement Power Push-Up Tests in Young Male Athletes. J Strength Cond Res, 34(9), 2456-2464. https://doi.org/10.1519/jsc.0000000000003684 Bridgeman, L. A., McGuigan, M. R., Gill, N. D., & Dulson, D. K. (2018). Relationships Between Concentric and Eccentric Strength and Countermovement Jump Performance in Resistance Trained Men. J Strength Cond Res, 32(1), 255-260. https://doi.org/10.1519/jsc.0000000000001539 Carr, J. C., Beck, T. W., Ye, X., & Wages, N. P. (2015). An Examination of Fatigue Index and Velocity-Related Force Loss for the Forearm Flexors. J Strength Cond Res, 29(8), 2304-2309. https://doi.org/10.1519/jsc.0000000000000879 Cerrah, A. O., & Bayram, İ. (2022). Relationship Between Isokinetic Strength, Vertical Jump, Sprint Speed, Agility And Yo-Yo Intermittent Recovery Test Performance in Soccer Players. European Journal of Physical Education and Sport Science, 9. https://doi.org/10.46827/ejpe.v9i2.4514 Chen, C., Ali, Z., Rehman Rashid, M. A., Samethanovna, M. U., Wu, G., Mukhametkali, S., & Dilnur, T. (2023). Relationship between isokinetic strength of the knee joint and countermovement jump performance in elite boxers. PeerJ, 11, e16521. https://doi.org/10.7717/peerj.16521 Ciccone, A. B., Deckert, J. A., Herda, T. J., Gallagher, P. M., & Weir, J. P. (2017). Methodological Differences in the Interpretation of Fatigue Data from Repeated Maximal Effort Knee Extensions. Open Sports Sciences Journal, 10. https://doi.org/10.2174/1875399X01710010037 Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences. L. Erlbaum Associates. https://books.google.tn/books?id=gA04ngAACAAJ Fischer, F., Blank, C., Dünnwald, T., Gföller, P., Herbst, E., Hoser, C., & Fink, C. (2017). Isokinetic Extension Strength Is Associated With Single-Leg Vertical Jump Height. Orthop J Sports Med, 5(11), 2325967117736766. http
- Downing JJ, Wilcox AR. Effects of an eight-week training program on upper-body power in women cross-country skiers. J Strength Cond Res. 2003 Nov;17(4):726-33. doi: 10.1519/1533-4287(2003)0172.0.co;2.
- Bridgeman LA, McGuigan MR, Gill ND, Dulson DK. Relationships Between Concentric and Eccentric Strength and Countermovement Jump Performance in Resistance Trained Men. J Strength Cond Res. 2018 Jan;32(1):255-260. doi: 10.1519/JSC.0000000000001539.
- Bohannon NA, Gillen ZM, Shoemaker ME, McKay BD, Gibson SM, Cramer JT. Test-Retest Reliability of Static and Countermovement Power Push-Up Tests in Young Male Athletes. J Strength Cond Res. 2020 Sep;34(9):2456-2464. doi: 10.1519/JSC.0000000000003684.
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
1. mars 2024
Primær fullføring (Faktiske)
1. november 2025
Studiet fullført (Faktiske)
12. desember 2025
Datoer for studieregistrering
Først innsendt
24. april 2026
Først innsendt som oppfylte QC-kriteriene
24. april 2026
Først lagt ut (Faktiske)
1. mai 2026
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
1. mai 2026
Siste oppdatering sendt inn som oppfylte QC-kriteriene
24. april 2026
Sist bekreftet
1. april 2026
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Andre studie-ID-numre
- E-87914409-050.03.04-230006086
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
NEI
IPD-planbeskrivelse
Individual participant data will not be publicly distributed to protect participant privacy and maintain confidentiality, in accordance with the ethics committee approval.
However, de-identified raw data can be made available upon reasonable request to the principal investigator.
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Nei
Studerer et amerikansk FDA-regulert enhetsprodukt
Nei
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