Olive Leaf Extract in Handball Players | NCT07371052 | Trialant

Olive Leaf Extract in Handball Players | NCT07371052 | Trialant

Arms/Interventions Module

Arm Groups

Label	Type	Description	Intervention Names
Study group	Experimental	olive leaf extract supplemented	Dietary Supplement: Olive leaf extract
Control group	Placebo Comparator	placebo capsule supplemented	Other: Placebo

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
Muscle Soreness	The severity of muscle soreness will be assessed using the Visual Analog Scale (VAS). Patients choose the appropriate score between 0 and 10. Higher scores indicate higher muscle soreness levels.	Baseline, After intervention (two week later), After intervention (fourt week later)
Squat jump height	Lower-body explosive performance was assessed using the squat jump test. Jump height was measured in centimeters (cm) with higher values indicating better explosive performance.	Performance outcomes were assessed at baseline, week 2, and week 4 of the intervention period.
Peak anaerobic power	Peak anaerobic power was assessed using the Wingate anaerobic test. Peak power output was recorded in watts (W) during the 30-second maximal cycling test. Higher values indicate greater anaerobic power.	baseline, week 2, and week 4.
Countermovement jump height	Lower-body explosive performance was assessed using the countermovement jump test. Jump height was measured in centimeters (cm) with higher values indicating better explosive performance.	Assessments were conducted at baseline, week 2, and week 4. Higher values indicate better explosive performance.
Mean anaerobic power	Mean anaerobic power was assessed using the Wingate anaerobic test. Mean power output was calculated as the average power produced over the 30-second test and recorded in watts (W). Higher values indicate better anaerobic capacity.	Baseline, week 2, and week 4
Fatigue index

Secondary Outcomes

Measure	Description	Time Frame
Sleep quality	Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI) total score. The PSQI is a validated self-reported questionnaire consisting of 19 items, yielding a global score ranging from 0 to 21, with higher scores indicating poorer sleep quality.	Total PSQI scores were recorded at baseline, week 2, and week 4 to evaluate changes in perceived sleep quality during the supplementation period.