Effects of Long-Term Training, Periods of Detraining and Retraining on Paraoxonase 1 Activity in Child Swimmers
Makaleler > Tam Makale · 2018
Yazarlar: Faruk TURGAY, Armağan ONGUN, Muzaffer ÇOLAKOĞLU
Turkiye Klinikleri Journal of Sports Sciences, Uluslararası, 2018, cilt 10, ss 130-138
DOI: 10.5336/sportsci.2018-61534
Özet
Objective: Antioxidant paraoxonase 1 enzyme (PON1) is a preventive enzyme against atherosclerosis. Aerobic exercise increases, oxidative stress decreases PON1. Effects of intensive and high volume swimming training which may create oxidative stress and decrease PON1 activity in children are unknown. Therefore, aim of the study was to investigate the effects of long-term swimming training (TP), detraining (DTP) and retraining periods (RTP) on blood PON1 activity in children. Material and Methods: 10 trained healthy (11.1± 0.6) years old male swimmers joined the study. Critical speed (CS) as endurance level indicator; basal PON1 (PON1), salt-stimulated PON1 (SPON1), arylesterase (AE) activities; high density lipoprotein cholesterol (HDL-C) total oxidant status (TOS), total antioxidant status (TAS) were determined at the end of TP, DTP and RTP every two months consecutively. Oxidative stress index (OSI: TAS/TOS) calculated. Results: AE activity at TP was greater than DTP (p<0.01) despite the high OSI (p<0.01). AE activity increased at RTP (p<0.05) despite the increased TOS (P<0.05). No change in PON1 activities and HDL-C levels during periods. Changes in AE activities were independent from HDL-C, CS. Conclusion: Results suggest that TP and RTP trainings improved AE activity independently from HDL-C and aerobic fitness levels despite the oxidative stress in trained children.