title: Measuring intermittent exercise performance using shuttle running.
abstract: The aim of this study was to include self-paced exercise within a modified Loughborough Intermittent Shuttle Test (LIST-P) in order to quantify key performance variables not possible with prescribed workloads. Sixteen male games players performed two trials of the LIST-P, at least 7 days apart. The LIST-P incorporates 4 × 15-min blocks of "prescribed-pace" activity (participants exercise in time to audible signals) followed by 2 × 15-min blocks of "self-paced" running (no audible signals). Distances covered and mean speeds were monitored during self-paced exercise. Total distance covered (12.54 ± 0.45 km vs. 12.64 ± 0.32 km; P = 0.10) and mean speed (8.37 ± 0.31 km ∙ h(-1) vs. 8.44 ± 0.22 km ∙ h(-1); P = 0.10) was similar between trials. Other indices also showed the test to be reliable (Pearson's correlation = 0.89 and 0.90 (P < 0.01), total distance and mean speed, respectively; intraclass correlation coefficient = 0.88 and 0.88 (P < 0.01); standard error of measurement = ±0.13 km and ±0.09 km ∙ h(-1); coefficient of variation (CV) = 1.7% and 1.7%; ratio limits of agreement = 1.00 */÷1.03 and 1.01 */÷1.04). Sprint time was also similar between trials (2.60 ± 0.19 s vs. 2.64 ± 0.23 s; P = 0.29). Incorporating self-paced exercise within an established intermittent shuttle running test appears to be a sensitive means of quantifying key performance variables for multiple-sprint sports research.
authors.affiliation: a School of Sport and Exercise , Massey University , Auckland , New Zealand.
authors.forename: Ajmol
authors.initials: A
authors.lastname: Ali
authors.forename: Andrew
authors.initials: A
authors.lastname: Foskett
authors.forename: Nicholas
authors.initials: N
authors.lastname: Gant
mesh_terms: D000328:Adult; D054874:Athletic Performance; D005080:Exercise Test / Q000379:methods*; D005221:Fatigue; D006801:Humans; D008297:Male; D010807:Physical Endurance; D005082:Physical Exertion; D010809:Physical Fitness; D015203:Reproducibility of Results; D012420:Running; D012916:Soccer / Q000502:physiology; D055815:Young Adult