This study does not investigate any diseases. It is conducted in healthy, resistance-trained adults and exclusively examines performance- and fatigue-related physiological responses.
Conditions
Interventions
Group 1: During the 60-minute resistance training session, participants consume a beverage consisting of
500 mL of water containing 60 g of carbohydrates, 0.5 g citric acid, and 0.5 g sodium chloride
Sponsors
Goethe Universität
Eligibility
Sex/Gender
All
Age
18 Years to 60 Years
Inclusion criteria
Inclusion criteria: Age between 18 and 60 years Voluntary participation with written informed consent Previous experience in resistance training Ability to understand the nature, scope, purpose, and potential consequences of the study Full legal capacity
Exclusion criteria
Exclusion criteria: Use of substances affecting perception or performance Acute injuries or severe medical conditions, including cardiovascular, pulmonary, or renal dysfunction neurological or psychiatric disorders advanced degenerative musculoskeletal diseases incompletely healed sports injuries Any other health condition that, in the investigators’ judgment, could compromise participant safety or data validity
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Change in strength performance and fatigue following the resistance training session, assessed using standardized strength diagnostics (jump performance, isometric maximal force, and fatigue assessment during leg extension), conducted immediately after completion of the training session. | — |
Secondary
| Measure | Time frame |
|---|---|
| Metabolic Outcomes Blood glucose (mg/dL) When: before training and after training How: capillary blood sampling from the earlobe Blood lactate (mmol/L) When: after completion of the training session How: capillary blood sampling from the earlobe Subjective Outcomes Rating of perceived exertion (RPE) using the Borg scale When: at the end of the final set of each exercise and after training Subjective well-being, nausea, and gastrointestinal symptoms When: after completion of the training session How: standardized self-report questionnaires | — |
Countries
Germany
Contacts
Public ContactTobias Engeroff
Goethe Universität
Outcome results
None listed