Acute effects of isokinetic and graded exercise on oxidative stress and antioxidants in college students

Abstract

BACKGROUND: This study- examined the acute effects of isokinetic contractions (IC) and a graded exercise test (GXT 100% and 70% V02max) with different intensities on derivatives of reactive oxygen metabolites (d-ROMs) and biological antioxidant potential (BAP) m healthy college students. METHODS: Thirty-six (a∗e: 22.58±1.62 years) were randomly assigned to perform slow IC (1.05 rad/s) and fast (4.19 rad/s) speeds, GXT at weekly intervals. Blood samples were collected at rest, immediately after exercise (IAE), after 30 mm of recovery (R30), 60 mm of recovery- (R60) and analysis for d-ROMs and BAP levels. RESULTS: The d-ROMs levels were significantly between slow IC and GXT, and fast IC from 70% V02max m IAE, 100% VOw significant from 70% VO^ m R30 min and fast IC significant from GXT (P<0.01) in R60 mm. IAE were significantly higher than rest, R30, and R60 mm and R30 mm than R60 min in 100% VO,max. BAP levels in slow IC were significantly lower than GXT (P<0.05) m IAE and R60 min. 100% V02mj,x significant from slow IC (P<0.05) and fast IC (P<0.01) in R30 min and fast IC significant from 100% V02m3X m R60 mm. BAP levels at IAE were significantly higher than R60 mm in slow IC, and significant from rest, R30 and R60 min in fast IC. GXT. CONCLUSIONS: To summarize, the acute responses of d-ROM and BAP levels in IC and GXT were found differently based on recovery time and modes of exercise.