title: The effect of carrying a portable respiratory gas analysis system on energy expenditure during incremental running.
abstract: This study aimed to assess the effect of portable gas analysis system carriage on energy expenditure (EE) during incremental treadmill running. Eight males (Mean ± SD) age 25.0 ± 9.47 y, body mass 78.5 ± 8.39 kg, completed an experimental trial (PT) during which they wore the system in a chest harness and a control trial (CT) when the system was externally supported. Each protocol consisted of 4 min stages at speeds of 0, 4, 7, 10, 12, 14 km h(-1). Increments continued until volitional exhaustion. The EE was greater (3.95 and 7.02% at 7 and 14 km h(-1) respectively) during PT (p < 0.05) but no significant differences were observed during standing, walking or VO(2max.) (4.10 ± 0.53, and 4.28 ± 0.75 l min(-1) for CT and PT respectively), HR or RPE. Portable gas analysis systems therefore only increase EE when running sub-maximally, but VO(2max) is unaffected, suggesting that using portable gas analysis systems in field-based situations is appropriate for maximal aerobic capacity measurement, but the effects of prolonged use on EE remains unclear.
authors.affiliation: Edge Hill University, UK.
authors.forename: S Andy
authors.initials: SA
authors.lastname: Sparks
authors.forename: Duncan
authors.initials: D
authors.lastname: Orme
authors.forename: Lars R
authors.initials: LR
authors.lastname: Mc Naughton
mesh_terms: D000328:Adult; D002245:Carbon Dioxide / Q000032:analysis; D004734:Energy Metabolism / Q000502:physiology*; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D010100:Oxygen / Q000032:analysis; D010101:Oxygen Consumption / Q000502:physiology; D005082:Physical Exertion / Q000502:physiology; D012143:Respiratory Physiological Phenomena; D012420:Running / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen