The effects of environmental temperature on the repeated sprint ability of amateur hockey players

French, Sophie (2016) The effects of environmental temperature on the repeated sprint ability of amateur hockey players. Undergraduate thesis, University of Chichester.

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Abstract

Limited information is available to hockey players regarding the effects of environmental temperature on their repeated sprint performance. This was investigated as repeated sprinting is critical to the success of a match. A repeated sprint is defined as a minimum of three successive sprints, with a maximum rest period of 21 seconds (Spencer et al., 2004). The effects of environmental temperature on hockey players in the UK climate has not been previously researched. Thus this study aimed to investigate the effects of 3.5°C (mean UK Winter temperature) and 14°C (mean UK September temperature) environmental temperatures on nine amateur hockey players, from the South of England (age: 20.33 ± 1.66 years, mass: 61.11 ± 6.90kg, height: 163 ± 8.15cm). Each participant completed four sets of three repeated sprints (16km.h-1), separated by an 18 seconds active recovery (9km.h-1). Between each repeated sprint set, the active recovery (4.3km.h-1) was extended to 1.5 minutes, 6 minutes and 1.5 minutes (respectively), allowing for data collection; rate of perceived exertion (Borg scale), rate of perceived thirst (thirst index), heart rate (beats.min-1), core temperature (°C), skin temperature (°C) & blood lactate (mmol.l-1). A two-way mixed ANOVA revealed 14°C was significantly greater than 3.5°C for Blood lactate (f (1,8) = 10.929, p = 0.11), rate of perceived exertion (f (1,8) = 16.200, p = 0.004), rate of perceived thirst (f (1,8) = 14.388, p = 0.005) and skin temperature (f (1,8) = 100.655, p = 0.000). While heart rate results did not support those of previous research (p >0.05). As expected the rate of perceived exertion (f (2.431, 19.446) = 49.772, p = 0.000) and rate of perceived thirst (f (1.382, 11.055) = 24.288, p = 0.000) significantly increased through the repeated sprints (at both temperatures). Whilst the heart rate (f (1.449, 11.595) = 6.992, p = 0.015) and blood lactate (f (1.059, 8.469) = 7.031, p = 0.008) showed a significantly difference through the sprints, but did not steadily increase at both temperatures. The core temperature showed similar fluctuation to blood lactate and heart rate. The results for 3.5°C were theorised to be caused by reduced thermogenesis and hypovolaemia, due to vasoconstriction and superficial cooling of the muscles. To conclude the players fatigued more slowly during cooler environmental temperature. This information will support coaches and athletes to understand performance and plan training during the seasonal changes of the UK amateur hockey season.

Item Type: Thesis (Undergraduate)
Additional Information: BA (Hons) Physical Education and Sports Coaching
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV201 Physical education and training
L Education > L Education (General)
Divisions: Departments > Sport and Exercise Sciences
Undergraduate Dissertations
Depositing User: Ann Jones
Date Deposited: 23 Mar 2017 15:36
Last Modified: 23 Mar 2017 15:36
URI: http://eprints.chi.ac.uk/id/eprint/2637

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