Required Quantification For the Physical Demands of Elite Men's Hockey

The Impact of Substitution Methods on Physical and Technical Performance in Elite Men's Hockey

by Sweta Sharma*,

- Published in International Journal of Physical Education & Sports Sciences, E-ISSN: 2231-3745

Volume 3, Issue No. 2, Jul 2012, Pages 0 - 0 (0)

Published by: Ignited Minds Journals


ABSTRACT

Researchhas shown that crews who blanket more excellent separation throughout matchesand complete increasingly fundamental assignments for example passes, handlesand shots are increasingly efficacious. Recognizing method of expanding theaforementioned physical and specialized yields is along these lines a criticalchance for exhibition improvement. There has been restricted research performedon hockey, specifically at the tip top level. An issue that is considerablyprogressively related given that in the past 15 years the game has experiencedsome huge guideline updates incorporating the presentation of unrestrictedsubstitutions. With sixteen players ready to be utilized for every match andeleven players on the field at any one time the mentor can make substitutionsas regularly as coveted to attempt to the for the most part exhibition of thecrew. The destinations of this proposal were to utilize routines for exhibitioninvestigation to measure the physical and specialized yields of playersthroughout upper class hockey and to in particular measure the effect ofcontrasting substitution methods on the physical and specialized yields ofstrikers throughout match play. Three striker conditions were surveyed; threestrikers with no substitutions, four strikers with a moderate product ofsubstitutions; and, five strikers with a hefty sum of substitutions. Fivematches between the New Zealandmen's hockey crew and Tasmaniastate agent crew were played over eight days. Physical yields of players weremeasured utilizing conveyable GPS units and heart rate screens and specializedparts of match play were measured utilizing group exhibition statistics and aset of specialized criteria which recompensed focuses to strikers for everycommitment they made to the amusement based upon a scale of viability. Normalaggregate separation secured throughout 70 minutes by a position was 8160 ±428m of which 479 ± 108m (6.1%) was performed at paces more amazing than19km.h-1. Inside this elevated force separation were 34 ± 12 sprints for everyplayer with a normal term of 3.3s. Normal match HR was 85.3 ± 2.9% HRmax and normalcrest HR was 96.3 ± 2.7% HRmax. Separation secured diminished by 6.2% betweenthe 1st and 2nd parts and there was a fad of diminishing separation in bothparts when add up to separation was broken into five-minute time periods. Anytime surveying the effect of substitutions on the exhibition of strikers it wasdiscovered that there were no huge contrasts in physical yields betweenconditions with sum separation (S5 = 8414 ± 125m, S4 = 8422 + 34m; S3 = 8282m)and separate secured at velocities more amazing than 19km.h-1(S5 = 701 ± 46m,S4 = 685 ± 28m, S3 = 723m) being comparable. Generous contrasts were discoveredin specialized yields between the substitution conditions with progressivelystrikers and more stupendous substitutions offering an improved sum yield thanless strikers and fewer substitutions (S5 = 241 ± 35, S4 = 207 ± 38, S3 = 173)however statistical criticalness between conditions was likewise notdiscovered. In finish, the outcomes propose that in spite of the fact thatsubstitutions are not an intends to build the physical work of strikers they dogive off an impression of being a route to upgrade the commitments thatstrikers are making to the amusement.

KEYWORD

physical demands, elite men's hockey, separation, passes, handles, shots, substitutions, performance improvement, GPS units, heart rate monitors, technical criteria, sprints, heart rate, match play, exhibition analysis, player performance, substitution methods

INTRODUCTION

Later standard alterations have essentially affected on the nature of hockey. Firstly, the playing surface modified from grass to manufactured turf in the 1970s which changed the pace and style of the diversion. Furthermore, control updates in the 1990‟s to permit unrestricted substitutions and to evacuate the offside principle were launched to advertise speedy-paced, nonstop play. Notwithstanding a vast number of group wear movement investigation studies being led on soccer (Bangsbo, Norregaard et al. 1991; Rienzi, Drust et al. 2000; Krustrup, Mohr et al. 2005; Di Salvo, Baron et al. 2007), rugby union (Deutsch et al., 2007; Duthie et al., 2003a, 2005), rugby group (Coutts et al., 2003; Kay & Gill, 2003) and Australian standards football (Dawson et al., 2004) there has been confined investigation of the physical demands of hockey since tenet updates have been executed, particularly at the best level. A concise rundown of studies from hockey is put forth in table. Johnston et al (2004) examined best male hockey players in the Scottish National League. Fifteen players were recorded, one player for every match, for fifteen weeks giving fifteen sets of information. Players invested the greater part of time stationary (4.0%) or occupied with flat force action (strolling 50.9%, running 29.6%) with just a little divide of the match in towering force

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155 ± 12 and 64% of match time was used above 75% of greatest HR. A normal of 30 ± 6 sprints with a normal sprint term of 5.7 seconds were performed for every match(Johnston et al., 2004). In best players Spencer et al (2004) utilized a cinematographic observational strategy to depict the physical work rates of hockey players throughout a worldwide test match. The mean match time of every player was 48 minutes. Comparable to the discoveries of Johnston et al (2004) flat power actions of standing strolling and running elucidated roughly 94% of match time (7.4% standing, 46.5% strolling, 40.5% running). Mean sprint term was 1.8 seconds with a normal of 30 ± 12 sprints for every player and the match comprised of 780 movements or a change in movement each 5.5 seconds (Spencer et al., 2004). Paun et al (2008) utilized SPi10 GPS units to measure the development plans and physiological demands of hockey match play in first class Australian household rivalry. Normal time that every player used on the pitch throughout every match was 64 minutes (the remaining time was used resting on the sideline while substituted) and add up to separation secured by players throughout this time was 6419 ± 838m. Players invested 89% of match time occupied with level or moderate power movement (standing, strolling and running) with the remaining 11% in towering force action. A normal of 36 ± 9 sprints were performed for every player for every match with a mean span and separation of 2.5 ± 1.7s and 12.4 ± 9.9m (Paun et al., 2008). Granted that the aforementioned two later studies have furnished a fundamental comprehension of the physical demands of men‟s exclusive hockey there are significant methodological distinctions between them which makes correlation of information exceptionally challenging. There are additionally deficits in both the aforementioned studies most eminently the humble number of matches utilized by Spencer et al (2004) and the minor number of players examined by Paun et al (2008). . Therefore there is a need to addition an extensive information set, blanket all positions for various matches to sufficiently portray the demands of top level of rivalry. Along these lines, the point of this study was to measure physical yields of hockey players throughout upper class level rivalry and to verify the general and position particular physical demands set upon players throughout match play.

AIM AND OBJECTIVES

The aim of this study was to determine the Physical demands of elite men's field hockey using modern time-motion analysis techniques. 18 elite male players (age: 24.4 ± 4.5 yrs) participated in 5 matches, during which Physical outputs of players were quantified using GPS covered by each individual player was 6798 ± 2009 m. Mean total distance covered per position for 70 min (position (70)) was 8160 ± 428 m. Distance covered per position (70) decreased by 4.8% between the 1 (st )and 2 (nd) halves ( P < 0.05). Fullbacks covered significantly less total distance than all other positions ( P < 0.05). High-intensity running (>19 km.h (-1)) comprised 6.1% (479 ± 108 m) of the total distance covered and involved 34 ± 12 sprints per player, with an average duration of 3.3 s. Average HR was higher in the 1 (st) half (86.7% HR (max)) than the 2 (nd) half, (84.4% HR (max)), though this was not significant ( P = 0.06). The results suggest that modern day elite field hockey is a Physically demanding team sport. Quantification of the demands and outputs of players at this level provides a useful framework on which to develop conditioning practices. The difference in Physical outputs observed for some positions suggests position-specific conditioning is required at the elite level.

METHODOLOGY

Five hockey matches were utilized for information gathering. The matches were between the New Zealand Men‟s National Squad and the Tasmanian State Representative Team (Australia). The matches were played on a water-based turf between the 18th and 25th of February 2006 in steady climate conditions (18-22.5o, 70-79% rH). The amusement agenda was match, match, rest, match, rest, match, rest, match. Three sorts of informative content were gathered and used to compute the physical and specialized demands of tip top men‟s hockey; GPS information, HR information and motion picture footage. Eighteen parts of the New Zealand Men‟s National hockey squad were utilized throughout the aforementioned five matches. Seven players were master, based in Europe for 6-7 months of the year, with the remnant apprentice and based in New Zealand. Commonplace week by week preparing burden was 20-25 hours for every week comprising of hockey and molding actions. Clear statistics from the member aggregation are displayed underneath with parts of fitness testing techniques furnished. This study was performed as the group was in arrangement for the 2006 Commonwealth Games. Morals regard from the AUT morals advisory group was progressed preceding initiation of the study and composed illuminated assent was acquired from every member preceding initiating information gathering. Pilot Data : Preliminary GPS and HR information was gathered throughout intra-squad trial matches and universal matches between May 2004 and November 2005. Investigation of this information gave direction for the outline of the undertaking by distinguishing variables

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about profitable by the instructing staff and players. Study Data Collection : An information accumulation partner was on the sideline of every match noting and enumerating correct timings for the match incorporating begin and end of every half, timing and portions of substitutions, position updates of players and stoppages. The aforementioned timings were then used to alter the GPS and HR with the goal that information was displayed for 10 positions (goalkeeper avoided) instead of for every single player.

CONCLUSION

This dissection of elite men”s hockeysuggests that players need an elevated amount of molding because of great separations secured, rehashed blasts of heightened power running and a mixed bag of extra physical demands connected with rehashed updates in tempo, a semi-squatted figure position and the form contact and specialized necessities of hockey matches. Aside from fullbacks, the positional assemblies in hockey were exceptionally comparable in their physical prerequisites. Fullbacks had the most minimal normal speed, secured the slightest sum separation, a more stupendous dimension of separation at flat force and less remove at moderate and heightened intensities. There were modest yet critical reductions in physical yields between the first and second parts and there was a general descending slant of separation secured in every 5 moment period throughout both parts. There was no evidence of lingering weakness over the five matches with sum physical yields remaining stable. elite men”s hockey requires an extremely large amount of physical condition and the booking of numerous matches in close nearness denotes the utilization of intensive nourishing and recuperation systems is additionally amazingly critical. Updates to the principles of the diversion seem to have brought about an increment in the physical demands of the diversion and in turn builds in the physical qualities of players.

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