Isokinetic Strength and Anaerobic Capacity

NCT07376551 | Not Yet Recruiting DMC

• 1 other identifier: E-87914409-050.04-117159
• Study Type: observational
• Target: 80
• Locations: 0 countries
• Sites: N/A

Brief Summary

This study aims to investigate differences in isokinetic knee extensor and flexor strength parameters among recreationally active young adult males classified into low, moderate, and high anaerobic power groups based on relative peak power (W/kg) obtained from the Wingate Anaerobic Test. Eighty male participants aged 22-30 years, engaging in regular physical activity, will undergo body composition analysis, isokinetic strength testing at 60°/s, and a 30-second Wingate test performed on separate days. Participants will be grouped according to median-based anaerobic power classification to allow meaningful group comparisons. Group differences in peak torque and total work will be analyzed using ANOVA or non-parametric equivalents, and relationships between Wingate parameters and isokinetic strength will be examined using correlation analyses. The findings are expected to provide novel insights into the relationship between anaerobic power classification and lower-extremity muscle strength profiles, contributing to performance profiling and training planning in recreationally active populations.

Conditions

Healthy Adult; Physical Condition

Keywords

Physical Fitness; Exercise Test; Acute Exercise

Outcome Measures

Primary Outcomes (1)

• Isokinetic knee extensor and flexor peak torque (Nm) at 60°/s

  Peak torque values of the knee extensor and flexor muscles will be assessed using isokinetic dynamometry during concentric contractions at an angular velocity of 60°/s. Measurements will be obtained from the dominant leg following a standardized warm-up protocol. Peak torque (Nm) will be used as the primary indicator of maximal dynamic muscle strength.

  day 1 (Assessed during a single laboratory testing session.)

Secondary Outcomes (1)

• Wingate-derived anaerobic performance parameters

  day 1 (Assessed during a single laboratory testing session.)

Study Arms (3)

Low Anaerobic Power (LAP)

Participants are recreationally active young adult males classified into three cohorts based on relative peak power (W/kg) obtained from the Wingate Anaerobic Test. The low, moderate, and high anaerobic power groups represent individuals with differing anaerobic performance capacities derived from median-based classification. All participants are physically active but non-elite, with no recent history of orthopedic injury or cardiopulmonary disease. Comparisons among cohorts are conducted to examine differences in isokinetic knee extensor and flexor strength parameters.

Moderate Anaerobic Power (MAP)

Participants are recreationally active young adult males classified into three cohorts based on relative peak power (W/kg) obtained from the Wingate Anaerobic Test. The low, moderate, and high anaerobic power groups represent individuals with differing anaerobic performance capacities derived from median-based classification. All participants are physically active but non-elite, with no recent history of orthopedic injury or cardiopulmonary disease. Comparisons among cohorts are conducted to examine differences in isokinetic knee extensor and flexor strength parameters.

High Anaerobic Power (HAP)

Participants are recreationally active young adult males classified into three cohorts based on relative peak power (W/kg) obtained from the Wingate Anaerobic Test. The low, moderate, and high anaerobic power groups represent individuals with differing anaerobic performance capacities derived from median-based classification. All participants are physically active but non-elite, with no recent history of orthopedic injury or cardiopulmonary disease. Comparisons among cohorts are conducted to examine differences in isokinetic knee extensor and flexor strength parameters.

Eligibility Criteria

• Age: 20 Years - 32 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Probability Sample

Study Population

The study population will consist of recreationally active young adult males aged 22-30 years who engage in regular physical activity at least two days per week. Participants will be non-elite individuals without a history of serious orthopedic injury within the past six months, cardiovascular or respiratory disease, or regular medication use. All participants will be healthy volunteers capable of performing maximal exercise testing and will provide written informed consent prior to participation.

You may qualify if:

• Male participants aged between 20 and 30 years
• Moderately physically active individuals, as defined by the International Physical Activity Questionnaire (IPAQ)
• Apparently healthy, with no known neurological, vestibular, or musculoskeletal disorders affecting balance
• Ability to stand independently and complete balance assessments
• Willingness to participate and provide written informed consent

You may not qualify if:

• History of lower-limb, spine, or pelvic injury or surgery within the past 6 months
• Presence of acute or chronic pain affecting posture or balance
• Diagnosed neurological, vestibular, or balance disorders
• Use of medications or substances that may affect neuromuscular function or postural control
• Participation in another clinical or observational study within the past 3 months

Sponsors & Collaborators

• Uludag University: lead

Related Publications (4)

• Bar-Or O. The Wingate anaerobic test. An update on methodology, reliability and validity. Sports Med. 1987 Nov-Dec;4(6):381-94. doi: 10.2165/00007256-198704060-00001. No abstract available.

  PMID: 3324256 BACKGROUND

• Zupan MF, Arata AW, Dawson LH, Wile AL, Payn TL, Hannon ME. Wingate Anaerobic Test peak power and anaerobic capacity classifications for men and women intercollegiate athletes. J Strength Cond Res. 2009 Dec;23(9):2598-604. doi: 10.1519/JSC.0b013e3181b1b21b.

  PMID: 19910814 BACKGROUND

• Park JH, Kim JE, Yoo JI, Kim YP, Kim EH, Seo TB. Comparison of maximum muscle strength and isokinetic knee and core muscle functions according to pedaling power difference of racing cyclist candidates. J Exerc Rehabil. 2019 Jun 30;15(3):401-406. doi: 10.12965/jer.1938180.090. eCollection 2019 Jun.

  PMID: 31316932 BACKGROUND

• 1.Alemdaroğlu, U. (2012). The Relationship Between Muscle Strength, Anaerobic Performance, Sprinting Ability, Agility and Vertical Jump Performance. Journal of Strength and Conditioning Research. 2. Bar Or, O. (1987). The Wingate anaerobic test: an update on methodology, reliability, and validity. Sports Medicine, 4(6), 381-394. (aracı olarak anılmış çalışmalarda referans). 3. Castaneda, A., Inbar, O., Bar Or, O. vd. (2021). The Wingate Anaerobic Test: A Narrative Review of the Protocol Variables that Affect the Results Obtained. Applied Sciences, 11(16), 7417. 4. Comin, A. C., vd. (2011). Validity of the Wingate Anaerobic Test for the Evaluation of Anaerobic Power and Capacity. Journal of Strength & Conditioning Research. (Özet referans) 5. Evans, E. M., & Quinney, H. A. (2003). Wingate Anaerobic Test peak power and anaerobic capacity classification system in NCAA athletes. Journal of Strength and Conditioning Research. 6. Harbili, S. (2015). Relationship between lower extremity isokinetic strength and anaerobic power in weightlifters, basketball and soccer players. International Education Studies. 7. Harbili, S. (2022). Comparison of bilateral isokinetic and isometric strength of knee extensor and flexor muscles. European Journal of Exercise & Rehabilitation. 8. Kin İsler, A., vd. (2008). The relationship between anaerobic performance, muscle strength and sprinting ability. International Education Studies. 9. Kavaliauskas, M., & Phillips, S. M. (2016). Reliability and sensitivity of the 6 and 30 second Wingate tests in physically active males and females. Isokinetics and Exercise Science, 24(4), 277-284. 10. Park, J., vd. (2019). Comparison of maximum muscle strength and isokinetic muscle functions according to pedaling power. PMC. 11. Zagatto, A. M., Beck, W. R., & Gobatto, C. A. (2009). Validity of the Running Anaerobic Sprint Test (RAST) for assessing anaerobic power and predicting short-distance performances. Journal of Strength and Conditioning Research, 23(6), 1820-1827. https://doi.org/10.1519/JSC.0b013e3181b3df32 12. Lehance, C., et al. (2009). Muscular strength, functional performances and injury risk in soccer players. Scandinavian Journal of Medicine & Science in Sports. 13. Castaneda, A., vd. (2021). The Wingate Anaerobic Test: A Narrative Review.

  BACKGROUND

Central Study Contacts

Tuncay Alparslan

CONTACT

+905058221661; tuncayalparslan@hotmail.com

Study Design

• Study Type: observational
• Observational Model: CASE CROSSOVER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Uludağ university

Study Record Dates

• First Submitted: January 9, 2026
• First Posted: January 29, 2026
• Study Start: January 5, 2026
• Primary Completion: March 1, 2026
• Study Completion: March 1, 2026
• Last Updated: January 29, 2026

Record last verified: 2026-01

Data Sharing

• IPD Sharing: Will not share