Gerhard Heldmaier
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View article: Shiny-Calorie: A context-aware application for indirect calorimetry data analysis and visualization using R
Shiny-Calorie: A context-aware application for indirect calorimetry data analysis and visualization using R Open
Indirect calorimetry is a cornerstone technique for metabolic phenotyping of animal models in pre-clinical research, with well-established experimental protocols and platforms. However, a flexible, extensible, and user-friendly software su…
View article: Shiny-Calorie: A context-aware application for indirect calorimetry data analysis and visualization using R
Shiny-Calorie: A context-aware application for indirect calorimetry data analysis and visualization using R Open
Indirect calorimetry is a cornerstone technique for metabolic phenotyping of animal models in preclinical research, with well-established experimental protocols and platforms. However, a flexible, extensible, and user-friendly software sui…
View article: Multiple ultradian rhythms of metabolism, body temperature and activity in Djungarian hamsters
Multiple ultradian rhythms of metabolism, body temperature and activity in Djungarian hamsters Open
Djungarian hamsters (Phodopus sungorus) living at constant 15 °C T a in short photoperiod (8:16 h L:D) showed pronounced ultradian rhythms (URs) of metabolic rate (MR), body temperature (T b ) and locomotor activity. The ultradian patterns…
View article: Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts <i>Apus apus</i> resting in their nests
Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts <i>Apus apus</i> resting in their nests Open
Daily torpor is a means of saving energy by controlled lowering of the metabolic rate (MR) during resting, usually coupled with a decrease in body temperature. We studied nocturnal daily torpor under natural conditions in free-living commo…
View article: How much does it cost? Teaching physiology of energy metabolism in mice using an indirect calorimetry system in a practical course for veterinary students
How much does it cost? Teaching physiology of energy metabolism in mice using an indirect calorimetry system in a practical course for veterinary students Open
In endothermic mammals total energy expenditure (EE) is composed of basal metabolic rate (BMR), energy spent for muscle activity, thermoregulation, any kind of production (such as milk, meat, or egg production), and the thermic effect of f…
View article: Hibernating astronauts—science or fiction?
Hibernating astronauts—science or fiction? Open
For long-duration manned space missions to Mars and beyond, reduction of astronaut metabolism by torpor, the metabolic state during hibernation of animals, would be a game changer: Water and food intake could be reduced by up to 75% and th…
View article: Seasonal Control of Mammalian Energy Balance: Recent Advances in the Understanding of Daily Torpor and Hibernation
Seasonal Control of Mammalian Energy Balance: Recent Advances in the Understanding of Daily Torpor and Hibernation Open
Endothermic mammals and birds require intensive energy turnover to sustain high body temperatures and metabolic rates. To cope with the energetic bottlenecks associated with the change of seasons, and to minimise energy expenditure, comple…