Muscle function may be determined by performance (eg, gait speed) and/or strength (eg, handgrip strength) measures, 1, 33, 34 but also in this case, the diversity of methods and cutoff values employed impedes study comparability.
The government is proposing sweeping changes in the rules covering research involving human subjects, an effort officials say would strengthen protections while reducing red tape that can impede studies.
Misclassification of drug exposure based on registry data will impede studies.
However, the need for reverse transcription polymerase chain reaction (RT-PCR) has impeded studies in resource-limited settings.
Finding experimental conditions under which membrane protein folding is fully reversible and reaches equilibrium on experimentally tractable timescales in vitro is challenging and continues to impede studies of membrane protein folding and stability [174].
However, the large proportion of uncultivated species comprising the human gut microbiota has impeded study of this community, including the associated mobile metagenome.
Although Lerista has been considered the best available model for investigating squamate limb reduction [ 10, 11], lack of a well-resolved phylogeny has impeded study of the pattern and mode of limb reduction and loss within the clade.
Some medications, drugs and alcohol have certain mental effects, and these impede study and counseling.
By ignoring information about variation at between- and within-individual levels, this technique impedes cross-study comparison of results, ignores data useful for future study design, and hinders the analysis of cross-level interactions.
Noëlle gave birth to her two children, Julia and Thomas, and though advanced tuberculosis impeded her studies, in 1990 she gained a first-class degree in music at Goldsmiths, which then invited her to teach.
