Test-Retest Reliability of Physiological and Performance Responses to 120 Minutes of Simulated Soccer Match Play. Issue 11 (November 2016)

• Record Type: Journal Article
• Authors: Harper, Liam D.; Hunter, Robert; Parker, Paul; Goodall, Stuart; Thomas, Kevin; Howatson, Glyn; West, Daniel J.; Stevenson, Emma; Russell, Mark
• Is Part Of: Journal of strength and conditioning research. Volume 30:Issue 11(2016)
• Publication Date: 2016-11
• Subjects: fatigue -- football -- metabolic -- reproducibility -- skill; Physical education and training -- Periodicals; Weight training -- Physiological aspects -- Periodicals; Physical fitness -- Periodicals; 613.7
• DOI: 10.1519/JSC.0000000000001400
• Languages: English
• ISSNs: 1064-8011

Abstract

Abstract : Abstract: Harper, LD, Hunter, R, Parker, P, Goodall, S, Thomas, K, Howatson, G, West, DJ, Stevenson, E, and Russell, M. Test-retest reliability of physiological and performance responses to 120 minutes of simulated soccer match play. J Strength Cond Res 30(11): 3178–3186, 2016—This study investigated the test-retest reliability of physiological and performance responses to 120 minutes (90 minutes plus 30 minutes extra-time [ET]) of the soccer match simulation (SMS). Ten university-standard soccer players completed the SMS on 2 occasions under standardized conditions. Capillary and venous blood was taken pre-exercise, at half-time, and at 90 and 120 minutes, with further capillary samples taken every 15 minutes throughout the exercise. Core temperature (T core ), physical (20- and 15-m sprint speeds and countermovement jump height), and technical (soccer dribbling) performance was also assessed during each trial. All variables except blood lactate demonstrated no systematic bias between trials ( p > 0.05). During the last 15 minutes of ET, test-rest reliability (coefficient of variation %, Pearson's r, respectively) was moderate to strong for 20-m sprint speed (3.5%, 0.71), countermovement jump height (4.9%, 0.90), dribble speed (2.8%, 0.90), and blood glucose (7.1%, 0.93), and very strong for T core (1.2%, 0.99). Moderate reliability was demonstrated for 15-m sprint speed (4.6%, 0.36), dribble precision (11.5%, 0.30), plasma insulin (10.3%, 0.96), creatine kinase ([CK] 28.1%, 0.38), interleukin-6 (24%, 0.99), nonesterified fatty acids ([NEFA] 13.2%, 0.73), glycerol (12.5%, 0.86), and blood lactate (18.6%, 0.79). In the last 15 minutes of ET, concentrations of blood glucose and lactate and sprint and jump performances were reduced, whereas T core, NEFA, glycerol, and CK concentrations were elevated ( p ⩽ 0.05). The SMS is a reliable protocol for measuring responses across the full 120 minutes of soccer-specific exercise. Deleterious effects on performance and physiological responses occur during ET.