title: The Reliability of Running Performance in a 5 km Time Trial on a Non-motorized Treadmill.
abstract: The purpose of the study was to establish the reliability of performance and physiological responses during a self-paced 5 km running time trial on a non-motorized treadmill. 17 male runners (age: 32±13 years, height: 177±7 cm, body mass: 71±9 kg, sum of 7 skinfolds: 55±21 mm) performed familiarization then 2 separate maximal 5 km running time trials on a non-motorized treadmill. Physiological responses measured included heart rate, oxygen uptake, expired air volume, blood lactate concentration, tissue saturation index and integrated electromyography. Running time (1,522±163 s vs. 1,519±162 s for trials 1 and 2, respectively) demonstrated a low CV of 1.2% and high ICC of 0.99. All physiological variables had CVs of less than 4% and ICCs of >0.92, with the exception of blood lactate concentration (7.0±2 mmol·L(-1) vs. 6.5±1.5 mmol·L(-1) for trials 1 and 2, respectively; CV: 12%, ICC: 0.83) and the electromyography measures (CV: 8-27%, ICC: 0.71-0.91). The data demonstrate that performance time in a 5 km running time trial on a non-motorized treadmill is a highly reliable test. Most physiological responses measured across the 5 km run also demonstrated good reliability.
authors: ASSET Laboratory Exercise and Sport Sciences, University of Newcastle, Ourimbah, Australia.
authors: C J
authors: CJ
authors: Stevens
authors: ASSET Laboratory Exercise and Sport Sciences, University of Newcastle, Ourimbah, Australia.
authors: J
authors: J
authors: Hacene
authors: School of Biomedical Sciences and Pharmacy, University of Newcastle, Ourimbah, Australia.
authors: D V
authors: DV
authors: Sculley
authors: Sport Science and Physical Activity, University of Bedfordshire, Bedford, United Kingdom.
authors: L
authors: L
authors: Taylor
authors: School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, Australia.
authors: R
authors: R
authors: Callister
authors: ASSET Laboratory Exercise and Sport Sciences, University of Newcastle, Ourimbah, Australia.
authors: B
authors: B
authors: Dascombe
mesh_terms: D000328:Adult; D004576:Electromyography; D005080:Exercise Test / Q000379:methods*; D005541:Forced Expiratory Volume; D006339:Heart Rate; D006801:Humans; D019344:Lactic Acid / Q000097:blood; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D010807:Physical Endurance / Q000502:physiology*; D015203:Reproducibility of Results; D012420:Running / Q000502:physiology*; D019265:Spectroscopy, Near-Infrared; D055815:Young Adult
chemical_list: D019344:Lactic Acid