Physical PerformanceLeg Muscle MassMuscle StrengthAerobic CapacityAnaerobic PowerJumping Performance in Young Adults
Investigational drug(s) / intervention(s)
Physical Performance Assessment
Physical Performance Assessment: Muscle Isokinetic Strength Testing, Leg Muscle Mass, and Aerobic and Anaerobic Performance Testing, Contermovement Jump
Study summary
The aim of this study will be to examine the relationship between leg muscle mass and muscle strength, aerobic capacity, anaerobic power, and jumping performance in young adults. In addition, these physical performance measures will be compared between male and female participants.
Recreationally active young adults will be recruited to participate in the study. Body weight and leg muscle mass will be assessed using a body composition analyzer. Participants will perform isokinetic and isometric leg strength tests, an aerobic fitness test (VO₂max), an anaerobic power test (Wingate), and a countermovement jump (CMJ) test.
This study aims to improve the understanding of the effects of leg muscle mass on physical performance and to identify possible differences between males and females. The findings are expected to contribute to exercise prescription, performance assessment, and future research in sports and health sciences.
Eligibility
Sex
ALL
Min age
18 Years
Max age
30 Years
Healthy volunteers
Accepted
Inclusion Criteria:
* absent of lower body injuries that could impact testing;
* were moderately physically active
* did not ingest ergogenic aids or stimulant drugs for at least 6 months prior to the start of the study.
Exclusion Criteria:
\-
Primary outcome measure(s)
Leg Muscle Mass-Related Physical Performance Measures — Baseline Measurement tool: Bioelectrical Impedance Analyzer (InBody 270, Biospace Co., South Korea) Description: Segmental lower-limb muscle mass (kg) measured using multi-frequency bioelectrical impedance analysis.
Unit: kg Time Frame: Baseline (single assessment)
Muscle Isokinetic Strength — Baseline Measurement tool: Isokinetic dynamometer (Humac Norm, Computer Sports Medicine Inc., USA) Description: Peak torque of dominant leg knee flexors and extensors measured at 60°·s-¹ and normalized to body weight.
Unit: Nm·kg-¹ Time Frame: Baseline
Anaerobic Power — Baseline Measurement tool: Wingate Anaerobic Test performed on cycle ergometer (Wattbike WPM Model B, UK) Description: Relative peak anaerobic power calculated during 30-s Wingate test and normalized to body weight.
Unit: W·kg-¹ Time Frame: Baseline
Countremovement Jump — Baseline Measurement tool: SmartJump contact mat system (Fusion Sport, Queensland, Australia) Description: Vertical jump height measured during the Countermovement Jump test. Jump height is calculated automatically from flight time using the SmartJump performance measurement system.
Scale description: Countermovement Jump Height (centimeters). Typical physiological range in healthy young adults is approximately 10-60 cm.
Interpretation: Higher values indicate better lower-body explosive performance. Unit: cm Time Frame: Baseline (up to 8 weeks)
Aerobic Capacity — Baseline Measurement tool: Breath-by-breath metabolic gas analyzer (Cosmed Quark CPET) during Bruce treadmill protocol Description: Maximal oxygen consumption determined according to standard VO₂max criteria.
Unit: ml·kg-¹·min-¹ Time Frame: Baseline
Muscle Isometric Strength — Baseline Measurement tool: Leg dynamometer (Takei T.K.K. 5402, Takei Scientific Instruments, Japan) Description: Maximal voluntary isometric force normalized to body weight. Highest value of three trials recorded.
Unit: kg·kg-¹ Time Frame: Baseline
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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