Athletic Performance
Conditions
Keywords
Athletic Performance, Mineral Homeostasis
Brief summary
This study investigates whether 8 weeks of post-training whey protein supplementation (30 g/day) affects serum mineral concentrations (calcium, phosphorus, magnesium, and iron) in elite endurance and power athletes during structured training.
Detailed description
This is a 10-week non-randomized, open-label intervention study involving elite male track-and-field athletes aged 18-26 years. Participants are allocated into a whey protein supplementation group or a control group based on convenience allocation. The intervention consists of daily intake of 30 g whey protein following training sessions over 8 weeks. Blood samples are collected at baseline and post-intervention to assess serum calcium, phosphorus, magnesium, and iron levels. The study aims to differentiate supplementation effects from training-induced physiological changes.
Interventions
DIETARY_SUPPLEMENTWhey Protein Supplementation
Participants in the intervention group consumed 30 g/day of whey protein powder within 30 minutes after training sessions for 8 weeks as part of a structured training program. The supplement (IronMaxx®, 100% Whey Protein) primarily consisted of whey protein concentrate and provided approximately 24 g of protein per daily dose. The intervention was administered in an open-label manner without placebo control. Participants were instructed to maintain their habitual diet and refrain from using additional nutritional supplements during the study period.
OTHERNo Supplement (Control)
Participants continued their usual sport-specific training program for 8 weeks without receiving whey protein or any additional nutritional supplementation. They were instructed to maintain their habitual diet and avoid initiating any new supplements during the study period.
Sponsors
Monira Aldhahi
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Intervention model description
Participants are divided into whey supplementation and control groups within endurance and power disciplines, with no randomization or blinding.
Eligibility
Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* Male elite track-and-field athletes * Age 18-30 years * Engaged in structured training program * No supplement use in past 3 months
Exclusion criteria
* Use of nutritional or mineral supplements * Metabolic or musculoskeletal disorders * Acute injury affecting performance * Use of ergogenic aids (e.g., creatine, anabolic agents)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| serum mineral concentrations (Calcium, Phosphorus, Magnesium, Iron) | Baseline (Week 1) and Post-Intervention (Week 10) | Serum concentrations of calcium, phosphorus, magnesium, and iron will be measured using standardized enzymatic and colorimetric assays from venous blood samples collected at rest. Measurements will be performed at baseline and after the intervention to assess changes associated with training and whey protein supplementation in elite athletes. |
Countries
Tunisia
Outcome results
None listed