title: Sprinting performance on the Woodway Curve 3.0 is related to muscle architecture.
abstract: To determine if unilateral measures of muscle architecture in the rectus femoris (RF) and vastus lateralis (VL) were related to (and predictive of) sprinting speed and unilateral (and bilateral) force (FRC) and power (POW) during a 30 s maximal sprint on the Woodway Curve 3.0 non-motorized treadmill. Twenty-eight healthy, physically active men (n = 14) and women (n = 14) (age = 22.9 ± 2.4 years; body mass = 77.1 ± 16.2 kg; height = 171.6 ± 11.2 cm; body-fa t = 19.4 ± 8.1%) completed one familiarization and one 30-s maximal sprint on the TM to obtain maximal sprinting speed, POW and FRC. Muscle thickness (MT), cross-sectional area (CSA) and echo intensity (ECHO) of the RF and VL in the dominant (DOM; determined by unilateral sprinting power) and non-dominant (ND) legs were measured via ultrasound. Pearson correlations indicated several significant (p < 0.05) relationships between sprinting performance [POW (peak, DOM and ND), FRC (peak, DOM, ND) and sprinting time] and muscle architecture. Stepwise regression indicated that POW(DOM) was predictive of ipsilateral RF (MT and CSA) and VL (CSA and ECHO), while POW(ND) was predictive of ipsilateral RF (MT and CSA) and VL (CSA); sprinting power/force asymmetry was not predictive of architecture asymmetry. Sprinting time was best predicted by peak power and peak force, though muscle quality (ECHO) and the bilateral percent difference in VL (CSA) were strong architectural predictors. Muscle architecture is related to (and predictive of) TM sprinting performance, while unilateral POW is predictive of ipsilateral architecture. However, the extent to which architecture and other factors (i.e. neuromuscular control and sprinting technique) affect TM performance remains unknown.
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Gerald T
authors.initials: GT
authors.lastname: Mangine
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: David H
authors.initials: DH
authors.lastname: Fukuda
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Jeremy R
authors.initials: JR
authors.lastname: Townsend
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Adam J
authors.initials: AJ
authors.lastname: Wells
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Adam M
authors.initials: AM
authors.lastname: Gonzalez
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Adam R
authors.initials: AR
authors.lastname: Jajtner
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Bohner
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Michael
authors.initials: M
authors.lastname: LaMonica
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Jay R
authors.initials: JR
authors.lastname: Hoffman
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Maren S
authors.initials: MS
authors.lastname: Fragala
authors.affiliation: a Institute of Exercise Physiology and Wellness , University of Central Florida , Orlando , FL , USA.
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Stout
mesh_terms: D000328:Adult; D054874:Athletic Performance; D005080:Exercise Test; D005260:Female; D006801:Humans; D007866:Leg; D008297:Male; D010809:Physical Fitness; D052097:Quadriceps Muscle / Q000502:physiology*; D012420:Running / Q000502:physiology*; D055815:Young Adult
keywords: Asymmetry; assessment; kinetics; power; technology