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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS
A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology
Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,111
The Journal of Sports Medicine and Physical Fitness 2015 Dec 01
Alpha-amylase serum levels in professional soccer players are not related with physical fitness
Sanchis-Gomar F. 1, Alis R. 2, 3, Rampinini E. 4, Bosio A. 4, Romagnoli M. 1, 5, Lombardi G. 6, Lippi G. 7 ✉
1 Research Institute Hospital 12 de Octubre (“i+12”), Madrid, Spain;
2 Research Institute “Dr. Viña Giner”, Molecular and Mitochondrial Medicine, Catholic University of Valencia San Vicente Mártir, Valencia, Spain;
3 School of Medicine, Catholic University of Valencia San Vicente Mártir, Valencia, Spain;
4 Human Performance Laboratory, MAPEI Sport Research Center, Olgiate Olona, Italy;
5 Department of Physical Education and Sports, University of Valencia, Valencia, Spain;
6 Laboratory of Experimental Biochemistry & Molecular Biology, I.R.C.C.S. Istituto Ortopedico Galeazzi, Milano, Italy;
7 Laboratory of Clinical Chemistry and Hematology, Academic Hospital of Parma, Parma, Italy
AIM: Recent evidence has showed that serum or salivary values of α-amylase predict endurance running performance. In this study we investigate whether serum α-amylase concentration may be associated with training status during a competitive season and after a detraining period in professional soccer players.
METHODS: The study population consisted in 15 male professional soccer players from an Italian major league team (age (mean±SD) 27±5 years, weight 76.9±4.1 kg, height 1.82±0.05 m). Serum α-amylase levels were measured 3 times during the last part of a competitive season (January, March and May) and just before preseason training (July).
RESULTS: Metabolic and cardiovascular fitness of soccer players was improved during the last part of the season. The levels of α-amylase did not change significantly throughout the study period (χ2 = 7.331, p = 0.062), nor they were found to be associated with variation of physical fitness and training status.
CONCLUSION: The α-amylase fluctuations throughout a competitive season and after vacation time were meaningless in professional soccer players. No significant associations with physical fitness variations could be observed. These results suggest that α-amylase concentration may be a useful parameter for identifying individual inclination to endurance exercise, but not for predicting actual training status.