Measurement of physical activity and nutrition behaviors comes with many challenges. Most behavioural nutrition and physical activity research relied and still relies on self-report measures. Such measures are liable to many biases, and we just do not have truly valid self report measures. In recent years more ‘objective’ measures of nutrition and physical activity behaviours have been developed, such as biomarkers, observations, real time monitoring. But such measures may be strong interventions in itself.
Tom argued for using objective measures and moving away from self-report measures, preferably completely, since these measures have too low validity to be used in intervention or determinant studies, and he provided convincing evidence to support that. Gaston argued that we need self report measures, since the available objective measures are not by definition valid measures, and can often not be used in ‘real life’ population studies, again supported by convincing evidence.
The 7th ISBNPA conference was very interesting, with keynotes on the ethics of obesity prevention, the use of theory in development of physical activity interventions, the genetics of obesity and nutrition behaviours, symposiums on a great variety of behavioural nutrition and physical activity topics, and many more oral and poster presentations on cutting edge themes.
Next year’s conference will be in lovely Lisbon. For more information on this year’s (including the program and abstract book) and next year’s conference, see: http://www.isbnpa.org/.