title: 3-min all-out exercise test for running.
abstract: A 3-min all-out exercise test (3 MT) estimates critical power and the curvature constant for cycle ergometry validly; however, the mode of running has not been studied. We examined the efficacy of a running 3 MT, using global positioning sensor data, to predict outdoor racing performance. Women distance runners (n=14) were tested at preseason within a month prior to competing officially in either short or middle distance races. Critical speed (CS) (4.46±0.41 m/s) estimated from the 3 MT did not differ (p>0.05) from the mean speed of gas exchange threshold and maximum oxygen uptake (50%Δ), as derived from a custom treadmill graded exercise test (4.55±0.24 m/s). Runners with higher curvature constants (D'), estimated from the 3 MT, raced at higher speeds above CS (R2 ranging 0.63-0.99). Race speeds for 800 m exceeded the speed for 150 s of all-out running, rendering 800 m estimates less accurate. Conversely, predicted times for the other distances yielded strong intraclass correlations (α) and low coefficients of variation (%) values (α=0.74/1.7% and α=0.87/2.1%, for 1 600 and 5 000 m, respectively). Use of the running 3 MT for performances ranging ~2.5-18 min is recommended.
authors.affiliation: Viola Holbrook Human Performance Research Laboratory, Minnesota State University, Mankato, USA. robert.pettitt@mnsu.edu
authors.forename: R W
authors.initials: RW
authors.lastname: Pettitt
authors.forename: N
authors.initials: N
authors.lastname: Jamnick
authors.forename: I E
authors.initials: IE
authors.lastname: Clark
mesh_terms: D000293:Adolescent; D005080:Exercise Test / Q000379:methods*; D005260:Female; D006801:Humans; D010101:Oxygen Consumption / Q000502:physiology; D012420:Running / Q000502:physiology*; D055815:Young Adult