title: Single measurement reliability and reproducibility of volitional and magnetically-evoked indices of neuromuscular performance in adults.
abstract: This study documents intra-session and inter-day reproducibility (coefficient of variation [V%]) and single measurement reliability (intra-class correlations [R(I)]; standard error of a single measurement [SEM%] [95% confidence limits]) of indices of neuromuscular performance elicited during peripheral nerve magnetic stimulation. Twelve adults (five men and seven women) completed 3 assessment sessions on 3 days, during which multiple assessments of knee flexor volitional and magnetically-evoked indices of electromechanical delay (EMD(V); EMD(E)), rate of force development (RFD(V); RFD(E)), peak force (PF(V); P(T)F(E)), and compound muscle action potential latency (LAT(E)) and amplitude (AMP(E)) were obtained. Results showed that magnetically-evoked indices of neuromuscular performance offered statistically equivalent levels of measurement reproducibility (V%: 4.3-31.2%) and reliability (R(I): 0.98-0.51) compared to volitional indices (V%: 3.7-25.2%; R(I): 0.98-0.64), which support the efficacy of both approaches to assessment and the indices PF(V), EMD(V), EMD(E) and LAT(E) offer the greatest practical utility for assessing neuromuscular performance.
authors.affiliation: School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, United Kingdom. claire.minshull@ntu.ac.uk
authors.forename: C
authors.initials: C
authors.lastname: Minshull
authors.forename: N P
authors.initials: NP
authors.lastname: Gleeson
authors.forename: R G
authors.initials: RG
authors.lastname: Eston
authors.forename: A
authors.initials: A
authors.lastname: Bailey
authors.forename: D
authors.initials: D
authors.lastname: Rees