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Hill Runner's Physiology, Performance and Nutrition: A Descriptive Study.

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Hill running performance is linked to better aerobic capacity and younger age. Hill runners may consume fewer calories than they expend, risking negative energy balance.

Keywords:
VO2maxanthropometrybody compositiondietendurance sportenergy intake and expenditure

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Human Performance

Background:

  • Hill running presents unique physiological demands compared to flat terrain running.
  • Understanding the interplay of anthropometry, aerobic capacity, and performance in hill runners is crucial for training optimization.
  • Nutritional status and energy balance are key factors influencing endurance performance.

Purpose of the Study:

  • To characterize anthropometric variables, aerobic capacity, running performance, and energy balance in hill runners.
  • To investigate the relationships between age, anthropometric factors, aerobic capacity, and hill running performance.
  • To assess energy intake and expenditure in free-living conditions among hill runners.

Main Methods:

  • Descriptive study involving 28 hill runners (17 males, 11 females; aged 18-65 years).
  • Laboratory assessment of body fat percentage, skinfold sum, and maximal oxygen capacity (VO2max).
  • On-site assessment of oxygen consumption during a timed hill run and free-living energy intake/expenditure via food diaries and accelerometers.

Main Results:

  • Hill running performance significantly correlated with VO2max (r=0.76), age (r=-0.44), and body fat percentage (r=-0.66).
  • VO2max showed a weak negative relationship with age (r=-0.38).
  • Hill runners exhibited a significant negative energy balance, with energy intake (2273 kcal/day) lower than expenditure (2879 kcal/day).

Conclusions:

  • Hill running performance is positively associated with higher aerobic capacity and negatively associated with increased adiposity and age.
  • Hill runners are at risk of negative energy balance due to insufficient energy intake relative to expenditure.
  • Findings suggest the need for tailored nutritional strategies to support the high energy demands of hill running.