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. 2004 Oct;38(5):617–621. doi: 10.1136/bjsm.2003.007690

Position related analysis of the appearance of and relationship between post-match physical and mental fatigue in university rugby football players

T Mashiko 1, T Umeda 1, S Nakaji 1, K Sugawara 1
PMCID: PMC1724951  PMID: 15388551

Abstract

Objective: The relationship between physical and mental fatigue in rugby players after a match was examined, taking into account the position played.

Methods: The Profile of Mood State (POMS) test, blood biochemical parameters, and serum opsonic activity were measured for 37 university rugby football players before and after a match.

Results: There were no differences in parameter changes except for blood urea nitrogen (a marker for protein catabolism) between the forwards and the backs. Regarding correlation between physical and mental fatigue, in forwards, changes in POMS scores showed a positive correlation with changes in the levels of enzymes of skeletal muscle origin, such as glutamate oxaloacetic transaminase (GOT) and lactate dehydrogenase (LDH), and free fatty acid (FFA) level and white blood cell count (for example, in the Total Mood Disturbance (TMD) score, Spearman's correlation coefficient was 0.417 and p<0.05 with GOT, 0.413 and p<0.05 with LDH, 0.462 and p<0.05 with FFA, and 0.442 and p<0.05 with white blood cell count). In backs, changes in the POMS scores showed a positive correlation with changes in the levels of lipid related parameters such as FFA and total cholesterol (for example, as regards the TMD score, Spearman's correlation coefficient was 0.481 and p<0.05 with FFA, and 0.550 and p<0.05 with total cholesterol), and showed a negative correlation with change in blood glucose level (TMD score, –0.517 and p<0.05).

Conclusions: The different exercise loading of the position played during a rugby match may cause differences in the relationship between physical and mental fatigue.

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