Small samples and increased variability - discussing the need for restricted types of randomization in exercise interventions in old age.
Yael NetzRonnie LidorGal ZivPublished in: European review of aging and physical activity : official journal of the European Group for Research into Elderly and Physical Activity (2019)
In exercise interventions assessing older adults, it is recommended to have a sample large enough for creating equal groups. If this is not possible, as is the case quite often in intervention studies in old age, it is recommended to assess the probability of inequality in the study groups and to apply an alternative randomization.