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Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Online ISSN 1827-1812
Chang G. KIM 1, Sung J. YOON 2, Bog J. JEOUNG 3, Jin S. LEE 2
1 Department of Sports Science, Gachon University, Seongnam, South Korea; 2 Exercise Physiology Lab, Department of Physical Education, Graduate School, Korea University, Seoul, South Korea; 3 Department of Exercise Rehabilitation and Welfare, Gachon University, Inchon, South Korea
BACKGROUND: This study examined the acute effects of isokinetic contractions (IC) and a graded exercise test (GXT 100% and 70% VO2max) with different intensities on derivatives of reactive oxygen metabolites (d-ROMs) and biological antioxidant potential (BAP) in healthy college students.
METHODS: Thirty-six (age: 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 min of recovery (R30), 60 min 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% VO2max in IAE, 100% VO2max significant from 70% VO2max in R30 min and fast IC significant from GXT (P<0.01) in R60 min. IAE were significantly higher than rest, R30, and R60 min and R30 min than R60 min in 100% VO2max. BAP levels in slow IC were significantly lower than GXT (P<0.05) in IAE and R60 min. 100% VO2max significant from slow IC (P<0.05) and fast IC (P<0.01) in R30 min and fast IC significant from 100% VO2max in R60 min. BAP levels at IAE were significantly higher than R60 min 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.