A 90-min cardiac biorhythm: methodology and data analysis using modified periodograms and complex demodulation.
Nor do the results of the survey indicate any negative effects on animal biorhythms or working conditions on farms.
Products and services include computers, knitwear, wooden games, road traffic signs, biorhythm charts, trees, wrought iron and clocks.
Critics state that biorhythms are based only upon numerological associations.
There have been some three dozen studies supporting biorhythm theory, but all of them have suffered from methodological and statistical errors.
One new feature was the biorhythm concept; players in the game had biorhythms that could be monitored to ensure optimal performance.
His studies and research on the biorhythms of the disa orchid species allowed the successful cultivation of these beautiful orchids in nurseries.
No biophysical mechanism of action has been discovered, and the predictive power of biorhythms charts is no better than chance.
