Crossover (Study) Design
- A type of longitudinal, repeated measures quasi-experimental design in which each group receives both treatments, but at different times. It is named "crossover" due to the patients "crossing-over" to the other treatment or sham group after a specified period of time.
- This type of study has the advantage of every individual serving as their own control, which may reduce the influence of confounding variables.
- Unfortunately, the design itself introduces the chances that anyone receiving the experimental variable in the first period will continue to be effected in the second period.
In a study by Senna et al., a cross-over design was used to investigate the difference load made on inter-set rest intervals (1).
- Senna, G.W., Rodrigues, B.M., Sandy, Scudese, Bianco, A, & Dantas, E.H.M. (2017). Heavy vs light load single-joint exercise performance with different intervals. Journal of Human Kinetics, 58, 197-206.