Comparison of an Acute Bout of Concurrent (Aerobic and Resistance) Exercise of Different Intensities on C- reactive protein in Active Men

Document Type : Original Article


1 M.A Exercise Physiology, Faculty of Physical Education and Sport Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.

2 Department of Exercise Physiology, Faculty of Physical Education and Sport Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.


Background and Objective: C-reactive protein (CRP) is a sensitive indicator of systemic inflammation and its increase is associate with cardiovascular disease. The aim of this study was to compare the effect of single acute bout of concurrent (aerobic and resistance) exercise of different intensities on changes in CRP serum levels in active men.
Subjects and Methods: Ten healthy active men (21.5±1.4 yr) with normal body mass index (22.2±1.2 Kg/m2) volunteered for this study. Participants concurrently performed aerobic and resistance exercises with low, moderate and high intensities.  The aerobic exercise entailed 300 Kcal in 8, 9.6 and 11.2 Km/hr and resistance exercise was composed of 45, 65 and 85% of 1-repeatition maximum (1-RM). Blood samples were taken before, immediately after and 24 hr after exercise.
Results: Plasma lactate concentration increased with all intensities immediately after exercise compared with before and 24 hr after exercise (P<0.05). An acute bout of concurrent exercises with different intensities did not result in significantly alterations in CRP (P>0.05).
Conclusions: The results showed that different intensities of concurrent (aerobic and resistance) exercise do not produce significant changes on CRP serum levels in active men; it is possible concurrent volume more important than concurrent intensity.


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