The goal of this randomized controlled trial is to compare adherence to training prescription-defined as the percentage of time spent within the prescribed intensity zone-using either a race pace-based method or a heart rate-based method in male and female recreational distance runners. The main research questions are: * Which training prescription method leads to greater adherence in recreational runners? * Which method results in more accurate execution of low- and high-intensity interval training sessions? Participants will undergo anthropometric and physiological assessments to determine training zones based on ventilatory thresholds. In addition, a 5-km time trial will be performed on a standard track to establish individual race pace zones.
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Maximal Oxygen Uptake (VOâ‚‚max)
Timeframe: Baseline
Time in Zone - Low-Intensity Training
Timeframe: Week 1 and week 2
Time in Zone - High-Intensity Interval Training (HIIT)
Timeframe: Week 1 and week 2