Purpose: This study examined the effects of longterm pre-exercise Curcuma xanthorriza Roxb supplementation on red blood cell indices along with circulating malondialdehyde (MDA) and superoxide dismutase (SOD) levels in response to endurance exercise to address previously inconsistent findings.
Methods: Male Wistar rats (Rattus norvegicus; n = 20, aged 12-16 weeks) were divided equally into an exercise-only group (C) and three groups supplemented with Curcuma extract at dosages of 6.75 (T1), 13.50 (T2), and 20.25 mg (T3). Curcuma extract supplementation was administered for 28 d immediately prior to exercise.
Results: Following 28 d of exhaustive swimming, the hematocrit and erythrocyte count increased by 15% (p = 0.06). Pre-exercise Curcuma supplementation did not significantly affect mean corpuscular volume or mean corpuscular hemoglobin concentration. Longterm exercise intervention resulted in elevated MDA levels by 41% (p <0.001), while Curcuma supplementation (13.50 mg) attenuated this increase by 16.6% (p = 0.09). Additionally, Curcuma supplementation resulted in a dose-dependent increase in SOD levels, with an 82.6% increase observed at 20.25 mg (p = 0.028).
Conclusion: Our preliminary findings indicated that pre-exercise supplementation with Curcuma extract had a negligible effect on changes in red blood cell markers, but it mitigated the increase in oxidative stress induced by exercise training. Our future research direction will involve applying the findings to humans.
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| http://dx.doi.org/10.20463/pan.2024.0023 | DOI Listing |
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