title: The influence of wearing compression stockings on performance indicators and physiological responses following a prolonged trail running exercise.
abstract: The objective of this study was to investigate the effects of wearing compression socks (CS) on performance indicators and physiological responses during prolonged trail running. Eleven trained runners completed a 15.6 km trail run at a competition intensity whilst wearing or not wearing CS. Counter movement jump, maximal voluntary contraction and the oxygenation profile of vastus lateralis muscle using near-infrared spectroscopy (NIRS) method were measured before and following exercise. Run time, heart rate (HR), blood lactate concentration and ratings of perceived exertion were evaluated during the CS and non-CS sessions. No significant difference in any dependent variables was observed during the run sessions. Run times were 5681.1 ± 503.5 and 5696.7 ± 530.7 s for the non-CS and CS conditions, respectively. The relative intensity during CS and non-CS runs corresponded to a range of 90.5-91.5% HRmax. Although NIRS measurements such as muscle oxygen uptake and muscle blood flow significantly increased following exercise (+57.7% and + 42.6%,+59.2% and + 32.4%, respectively for the CS and non-CS sessions, P<0.05), there was no difference between the run conditions. The findings suggest that competitive runners do not gain any practical or physiological benefits from wearing CS during prolonged off-road running.
authors.affiliation: a UFR STAPS , LAHMESS, Nice Sophia Antpolis, Nice , France.
authors.forename: Fabrice
authors.initials: F
authors.lastname: Vercruyssen
authors.forename: Christopher
authors.initials: C
authors.lastname: Easthope
authors.forename: Thierry
authors.initials: T
authors.lastname: Bernard
authors.forename: Christophe
authors.initials: C
authors.lastname: Hausswirth
authors.forename: Francois
authors.initials: F
authors.lastname: Bieuzen
authors.forename: Mathieu
authors.initials: M
authors.lastname: Gruet
authors.forename: Jeanick
authors.initials: J
authors.lastname: Brisswalter
mesh_terms: D000328:Adult; D054874:Athletic Performance; D005080:Exercise Test / Q000379:methods; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D019344:Lactic Acid / Q000097:blood; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D010101:Oxygen Consumption / Q000502:physiology; D052097:Quadriceps Muscle / Q000502:physiology*; D012420:Running / Q000502:physiology*; D019265:Spectroscopy, Near-Infrared; D053828:Stockings, Compression; D013997:Time Factors
chemical_list: D019344:Lactic Acid