In a small, randomized, controlled study, one of the most
reliable types of studies, a popular energy drink was linked with increases in blood pressure and stress hormones called catecholamines in young, healthy adults.
Not exact matches
«Usually this
type of research has to be done retrospectively, and those
studies are not very
reliable,» added Rainer Spanagel, head
of the Institute
of Psychopharmacology at the University
of Heidelberg.
If, for example, the
studies differ with regard to the
type or severity
of disease, no
reliable conclusions are possible anymore.
Other
types of parking aids that rely on radar or ultrasonic sensors have also been
studied for their ability to prevent backovers but are considered less
reliable for this purpose.
8) If a testing device or other equipment is used, show that: a. the
type of device used is
reliable and / or accepted as dependable for such use by an appropriate body
of scientific thought and by
studies, experiments and field use; b. the method
of operation
of the device and the particular device used are
of an accepted
type and in good working order; c. the operator
of the device was competent to use the device by training and experience; and d. that the particular test was correctly done.