Personality, Metabolic Rate and Aerobic Capacity

Personality, Metabolic Rate and Aerobic Capacity

Personality traits and cardiorespiratory fitness in older adults are reliable predictors of health and longevity. We examined the association between personality traits and energy expenditure at rest (basal metabolic rate) and during normal and maximal sustained walking. Personality traits and oxygen (VO(2)) consumption were assessed in 642 participants from the Baltimore Longitudinal Study of ...

Exercise-induced maximal metabolic rate scales with muscle aerobic capacity.

The logarithmic nature of the allometric equation suggests that metabolic rate scaling is related to some fractal properties of the organism. Two universal models have been proposed, based on (1) the fractal design of the vasculature and (2) the fractal nature of the 'total effective surface' of mitochondria and capillaries. According to these models, basal and maximal metabolic rates must scal...

Effects of oxygen availability on maximum aerobic performance in Mus musculus selected for basal metabolic rate or aerobic capacity.

Maximum aerobic metabolism cannot increase indefinitely in response to demands for ATP production and, therefore, must be constrained by one (or many) of the steps of the oxygen transport and utilization pathways. To elucidate those constraints we compared peak metabolic rate elicited by running (V(.)(O₂,run)) in hypoxia (14% O₂), normoxia (21% O₂) and hyperoxia (30% O₂) of laboratory mice dive...

Basal metabolic rate, maximum thermogenic capacity and aerobic scope in rodents: interaction between environmental temperature and torpor use.

When torpid animals arouse and warm up to restore normal body temperature (T(b)), they produce heat at levels that can reach up to 10 times basal metabolic rate (BMR), close to the cold-induced summit metabolism (VO(2)-sum). Because torpor is an adaptation aimed at conserving energy over periods of low ambient temperature (T(a)) and food availability, selective forces that have led to the evolu...

Personality and basal metabolic rate in a wild bird population