Exploring the Correlation of Two Field Tests with Match-Related Performance in Female Premier League Hockey Players

Background: Field hockey is a stick and ball team sport which is comprised of technical and tactical components and requires elevated physical conditioning. Due to the intermittent and complex nature of field hockey, it has become increasingly difficult for coaches to accurately measure the players hockey specific fitness levels. For this reason, various fitness tests have been developed over the years. However, some of the fitness tests utilised to this day do not incorporate movements similar to match situations, and therefore, do not stress the same energy systems in a similar manner to match-play. Hence, the INTER test and Dynamic Yo-Yo test are being utilised in the current study as they incorporate similar movements seen in match-play, and they incorporate varying rest periods. The INTER test is a test that incorporates shuttles, maximal sprints and agility movements. Whereas the Dynamic Yo-Yo test only incorporates shuttles running with differing changes in angles. However, both of these tests have previously only been used in a soccer context, therefore, the results obtained were compared to soccer specific data. Match-related data was compared to current field hockey data. Aim and Objectives: The main aim of the research study was to determine whether the INTER test and the Dynamic Yo-Yo test correlate with match-related physiological demands and physical performance. There were three main objectives of the study. First, to determine and describe the physical and physiological responses in selected cohort off hockey players during match-play, the INTER test and the Dynamic Yo-Yo test. Second, to run correlations between the two field tests and match-play to identify relationships. Third was to identify the differences between the two field tests. Methods: Using a combination of purposive and convenience sampling, a total of 20 field hockey players from the Eastern Cape Premier Hockey League voluntarily participated in the study (age: 22.25 ± 3.16 years; height: 167.3 ± 2.61cm; weight: 59.4 ± 3.87). The participants were monitored during the INTER test, Dynamic Yo-Yo test and the field hockey matches. The following physiological and physical variables were monitored: heart rate, breathing rate, distance and speed. The participants were given a minimum of 24 hours recovery time between field tests and matches to ensure fatigue did not impact results. The monitoring during the field tests and match-play was done by all participants wearing the Zephyr BioHarness and QStarz global positioning system. VI Results: The mean distance achieved in the INTER test and the Dynamic Yo-Yo test both produced a statistically strong relationship to the mean distance achieved in the matches (r=0.82, p=0.000). The time spent in the INTER test and the Dynamic Yo-Yo test compared to the time spent in match-play showed a very weak correlation (r=0.19; r=-0.08). Both the mean breathing rate for the INTER test and the Dynamic Yo-Yo test resulted in a very strong correlations (r=0.8) which was statistically significant (p=0.000). Participants spend on average 72% of match-play at >85% HRpeak compared to the 52% and 78% spent at >85% HRpeak during the INTER test and the Dynamic Yo-Yo test respectively. The INTER test produced a greater number of statistically significant correlations with the combined matches compared to the Dynamic Yo-Yo test. When identifying the differences between the variables measured in the INTER test and the Dynamic Yo-Yo test, it was identified that there were many significant differences. Conclusions: Both the Dynamic Yo-Yo and the INTER test can be used by hockey coaches. However, the researcher would recommend the utilisation of the INTER test, because it displayed stronger, more significant correlations to match-play. The set-up of the INTER test is also more convenient as it can be conducted on the astro turf. While, both tests did have some correlations to match-play, additional tests would need to be included in a testing battery to provide coaches with complete profiles of the players in order to assist in team selections.Thesis (MA) -- Faculty of Health Sciences, 202