Nature

Validity and reliability of a novel iPhone method to rapidly measure cervical sagittal parameters

We introduced a novel method based on the iPhone’s intrinsic photo edit function to measure sagittal parameters of the cervical spine. This study aimed to assess the validity of this new method ...
BMJ

What is unified validity theory and how might it contribute to research and practice with athlete self-report measures

Correspondence to Johann Windt, Department of Experimental Medicine, University of British Columbia, Vancouver, V5Z 1M9, Canada; johann.windt{at}usoc.org Athlete self-report measures (ASRMs) are an ...
Nature

Validity and reliability of the T-Force and Chronojump systems to measure movement velocity on resistance machines with older adults

Resistance training (RT) has been considered an effective strategy for improving muscle strength and overall wellness in older adults 1,2. In a geriatric setting, prescribing RT variables, namely, ...