Factors Associated with Pre-Event Hydration Status and Drinking Behavior of Middle-Aged Cyclists

Area of Science:

• Exercise Physiology
• Sports Nutrition
• Aging Physiology

Background:

• Aging adults have a blunted thirst mechanism, increasing dehydration risk.
• Adequate fluid intake is crucial for thermoregulation and metabolism, especially during exercise.
• Understanding hydration beliefs in aging athletes can improve fluid balance strategies.

Purpose of the Study:

• To evaluate hydration knowledge, beliefs, and behaviors in middle-aged cyclists.
• To associate these factors with hydration status before and during a long-distance cycling event.
• To identify influences on fluid consumption in this demographic.

Main Methods:

• Cross-sectional field study of 36 male recreational cyclists (age 53±9 years).
• Participants grouped by pre-event urine specific gravity (Usg): slightly hyperhydrated (SH), euhydrated (EUH), or slightly dehydrated (SD).
• Data collected via questionnaires and Usg measurements before a 164-km cycling event in hot conditions (33.3±2.8°C).

Main Results:

• All groups had similar body mass loss and exercise times, irrespective of pre-event hydration status.
• Cyclist drinking behavior was primarily influenced by personal experience and thirst.
• Most cyclists believed dehydration negatively impacts performance, yet scientific recommendations were least influential.

Conclusions:

• Individualized hydration plans based on exercise observations are recommended for middle-aged cyclists.
• This approach accounts for age-related physiological changes like delayed thirst perception.
• Promoting better drinking habits is essential to reduce fluid imbalances in aging athletes.