{"id":2749,"date":"2003-04-01T10:42:07","date_gmt":"2003-04-01T08:42:07","guid":{"rendered":"http:\/\/www.mapeisport.it\/attivita-scientifica\/reliability-of-heart-rate-recorded-during-soccer-training\/"},"modified":"2023-03-30T10:44:28","modified_gmt":"2023-03-30T08:44:28","slug":"reliability-of-heart-rate-recorded-during-soccer-training","status":"publish","type":"attivita-scientifica","link":"https:\/\/www.mapeisport.it\/en\/attivita-scientifica\/reliability-of-heart-rate-recorded-during-soccer-training\/","title":{"rendered":"Reliability of heart rate recorded during soccer training"},"content":{"rendered":"<p>Rampinini E<sup>1<\/sup>, Sassi A<sup>1<\/sup>, Impellizzeri FM<sup>1<\/sup><\/p>\n<p>&nbsp;<\/p>\n<p>1, Human performance Lab, SS MAPEI, Castellanza, Italy<\/p>\n<p style=\"text-align: justify;\"><strong>Introduction <\/strong>Heart rate (HR) is used to monitor and to design aerobic training (1). Modern HR telemetric systems allow to collect training data during specific exercise with no discomfort.\u00a0 Using laboratory tests to determine the individual HR-VO2 relationship, it is also possible to better analyze the metabolic demands and the energy cost of the sport-specific exercises.\u00a0 Furthermore, even without the HR-VO2 relationship, HR itself could be considered indicative of the physiological effort (2) and it is possible to use it to define target exercise intensity zones (3).However, many coaches could not use HR monitors with all the athletes or during the whole soccer season.\u00a0 An alternative approach could be to determine the individual exercise intensities expressed as % of HR<sub>MAX<\/sub> of the typical exercises included in the training programme, using these measurements as reference data from which the physiological load imposed on the single athlete could be subsequently estimated.\u00a0 However, this strategy could be acceptable only if the reliability of HR during these exercise is high. Thus, the aim of this study was to determine the reliability of typical soccer specific exercises with and without the ball, commonly included in the training programme of a junior soccer team. <strong>Materials and Methods<\/strong> Fifteen soccer young players (mean \u00b1 SD: age 17.4 \u00b1 0.5 yrs, weight 70.4 \u00b1 5.2 kg, height 179.3 \u00b1 4.1 cm, VO<sub>2MAX<\/sub> 53.3 \u00b1 4.2 ml\u00b7kg<sup>-1<\/sup>\u00b7min<sup>-1<\/sup>), performed two times the same training session within one week.\u00a0 The players were part of the same team (Beretti Pro Patria Calcio, N=23).\u00a0 Training duration was 120 min and included warm up using the ball, 4vs4 (4&#215;4 min), 4vs2 (2&#215;4 min), 10vs10 (10 min) and two circuit tracks (A and B) without the ball (2&#215;8 min) including direction changes, backward and lateral running, sprints, jumps, slalom and hills.\u00a0 During the whole training session HR was recorded every 5 s using an HR monitor (VantageNV and mod. S710, Polar Electro, Finland) but the athletes had no possibility to observe their HR. Reliability was determined using Bland and Altman scatterplot (difference between the two HR training sessions expressed in % of HRMAX plotted against the measurements\u2019 mean). Reference lines were determined as the mean difference \uf0b1 1.96 SD.\u00a0 Intra-class correlation coefficients (ICC) were also calculated. <strong>Results<\/strong> The exercise intensities expressed as % of HRMAX during the first training session were 76.6 \u00b1 7.4 (warm up), 88.3 \u00b1 3.0 (4vs4), 75.5 \u00b1 4.6 (4vs2), 84.3 \u00b13.5 (10vs10), 89.5 \u00b1 2.5 (circuit A) and 89.2 \u00b1 2.2 (circuit B). The exercise intensities expressed as % of HR<sub>MAX <\/sub>during the second training session were 73.1 \u00b1 \u00a05.5 (warm up), 88.1 \u00b1 4.5 (4vs4), 80.1 \u00b1 6.2 (4vs2), 86.0 \u00b1 5.6 (10vs10), 87.0 \u00b1 2.7(circuit A) and 88.8 \u00b1 2.1(circuit B). The bias \u00b1 random error component (SD of the differences multiplied by 1.96) expressed as % of HRMAX for warm up with the ball was 3.5 \u00b1 14.2, for 4vs4 was 0.3 \u00b1 6.5, for 4vs2 was \u20134.5 \u00b1 9.3, for 10vs10 was \u20131.7 \u00b1 9.3, for CircuitA was 2.5 \u00b1 2.4 and for CircuiB was 0.5 \u00b1 2.5. ICC for warm up with the ball was 0.381, for 4vs4 was 0.624, for 4vs2 was 0.623, for 10 vs10 was 0.488, for CircuitA was 0.888 and for CircuiB was 0.825. <strong>Discussion<\/strong> The results of this study showed a poor reliability of small group play HR (ICC from 0.381 to 0.624). On the other hand, the circuit track HR performed without the ball used in the present investigation and adopted by the coach of this team showed a good reliability (ICC 0.888 and 0.825), with HR differences within 0.1% and 5.0% of HR<sub>MAX <\/sub>during CircuitA and within \u20132% and 3% of HR<sub>MAX<\/sub> during CircuitB.\u00a0 These suggest that exercise intensity during running aerobic training is reliable and that could be performed without continuous HR monitoring during the training sessions. On the other hand, soccer specific exercise training using the ball need to be controlled with HR monitor.\u00a0 This could allow coaches to determine the actual individual cardiovascular load in order to optimize the following training sessions, or to control the compliance of the physiological stimuli imposed to players to the training previously programmed.<\/p>\n<p>REFERENCES<\/p>\n<p>1.Gilman MB. The use of heart rate to monitor the intensity of endurance training. Sports Med 1996; 21:73-79.<\/p>\n<p>2.Reilly T. Energetics of high-intensity exercise (soccer) with particular reference to fatigue. J Sports Sci 1997; 15:257-263<\/p>\n<p>3.Helgerud J, Engen LC, Wisloff U, Hoff J. Aerobic endurance training improves soccer performance. Med Sci Sports Exerc 2001; 33:1925-31<\/p>\n<p>5th World Congress on Science and Football (WCSF), Lisbon.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":18364,"template":"","categories":[858,862,863],"tags":[192,197,908],"class_list":["post-2749","attivita-scientifica","type-attivita-scientifica","status-publish","has-post-thumbnail","hentry","category-calcio-en","category-monitoring-en","category-soccer-3-en","tag-aldo-sassi-en","tag-ermanno-rampinini-en","tag-franco-impellizzeri-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Reliability of heart rate recorded during soccer training - Mapei Sport<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mapeisport.it\/en\/attivita-scientifica\/reliability-of-heart-rate-recorded-during-soccer-training\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reliability of heart rate recorded during soccer training - Mapei Sport\" \/>\n<meta property=\"og:description\" content=\"Rampinini E1, Sassi A1, Impellizzeri FM1 &nbsp; 1, Human performance Lab, SS MAPEI, Castellanza, Italy Introduction Heart rate (HR) is used to monitor and to design aerobic training (1). 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