Squat science: new way to gauge muscle fatigue discovered!
NCT ID NCT07307963
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether measuring how fast you can lift a weight (velocity) and how much weight you can handle (load) can show how tired your muscles get from doing squats. Twenty-eight men who regularly lift weights did different squat routines, and their speed and load were checked before and after. The goal was to see if these simple measurements could be a practical tool for athletes and trainers to monitor fatigue.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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28 people
The number who actually took part.
- Started
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May 2024
- Finished
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Oct 2024
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Twenty-eight physically trained males, with an average age of 23.3 years (standard deviation \[SD\]: 3.0 years; range: 20-36 years), willingly enrolled in this research endeavor. The participants exhibited a mean body mass of 78.1 kg (SD: 9.3 kg), a body height of 177.2 cm (SD: 3.3 cm), and a one-repetition maximum (1RM) for smith-machine squat (SMS) exercise of 150.9 kg (SD: 12.5 kg). All subjects possessed prior RT experience, averaging 5.0 years (SD: 2.6 years), and demonstrated proficiency in executing the SMS exercise during the familiarization session.
- Ages
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18 to 35 years
- Sex
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Male participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Healthy males aged 18-40 years. Resistance-trained (minimum 2 years of regular lower-body resistance training and ≥2 sessions/week). Able to perform a proper smith-machine back squat with correct technique. 1-RM smith-machine squat measurable and ≥ bodyweight (or specify threshold used in study). No musculoskeletal injury of lower limbs or back in the past 6 months. Not using performance-enhancing drugs or anabolic steroids for the past 12 months. Willing and able to attend all testing and training sessions and provide written informed consent. Exclusion Criteria: Any cardiovascular, pulmonary, metabolic, or neurological disease contraindicating intense exercise. Recent (≤6 months) lower-extremity or spinal surgery or acute injury. Current musculoskeletal pain or injury that limits squat performance. Use of medications that affect neuromuscular performance (e.g., systemic corticosteroids) or stimulant drugs. Regular participation in structured lower-body rehabilitation programs. Failure to complete familiarization or preliminary 1-RM testing. Inability or unwillingness to provide informed consent or follow study procedures.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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İstanbul Gelişim Üniversity
Istanbul, avcılar, 34310, Turkey (Türkiye)
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