Glossary

Month: August 2020

  • Heat stress index

    A scale used to determine the risk of heat stress from measures of ambient temperature and relative humidity.  

  • Heat stress

    The physical work and environmental components that combine to create heat load on an individual. Damage to your hair caused by using a lot of heat tools (blow-dryers, straightening irons, flat irons) consistently over a period of time.  

  • Heat strain

    The physiological responses and resulting ther-moregulatory processes to combat heat stress.  

  • Heart rate variability

    The beat-to-beat variation in the time of the R to R intervals on a standard ECG. Spontaneous fluctuations above and below the mean heart rate. A reduced HRV is associated with an increased incidence of total mortality and cardiac events in post-myocardial infarction patients, as well as in apparently healthy individuals, especially older persons.  

  • Health-related physical fitness (HRPF)

    That portion of physical fitness directed toward the prevention of or rehabilitation from disease, the development of a high level of functional capacity for the necessary and discretionary tasks of life, and the maintenance or enhancement of physiological functions in biological systems that are not involved in performance but are influenced by habitual activity.  

  • Glyconeogenesis

    The production of glycogen from glucose derived from non-carbohydrate sources. The formation of glycogen from protein or frat compounds, gluconeogenesis. The formation of glycogen from amino acids. It occurs in the liver when there are excess amino acids and decreased carbohydrate intake.  

  • Food efficiency

    An index of the number of calories an individual needs to ingest to maintain a given weight or percent body fat.  

  • First law of thermodynamics or the law of conservation of energy

    Energy can neither be created nor destroyed but can only change in form.  

  • Field test

    A performance-based test that can be conducted anywhere, and that estimates the values measured by the criterion test.  

  • Fick equation

    An equation used to calculate cardiac output from oxygen consumption (VO2,) and arteriovenous oxygen difference (a-vO2,diff).