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Effect of eight weeks of combined exercise and omega-3 supplementation on the levels of inflammatory and anti-inflammatory cytokines in elderly women

In: Comparative Exercise Physiology
Authors:
V. Sobhani Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran

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R. Shakibaei Department of Physical Education and Sport Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran

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M. Gholami Department of Physical Education and Sport Sciences, Faculty of Literature, Humanities and Social Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran

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https://orcid.org/0000-0001-8960-4123
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E. Arabzadeh Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran

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https://orcid.org/0000-0003-2907-9798
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Abstract

Exercise training and omega-3 supplementation are known to have anti-inflammatory effects; however, the simultaneous effect of exercise training and omega-3 supplementation has received little attention so far. The present study aimed to investigate the effect of combined training (resistance endurance) and omega-3 supplementation on the levels of inflammatory and anti-inflammatory cytokines in older women. The 40 participating older adults, with an average age of 66.7 ± 4.13 years, were randomly assigned to four groups: placebo, omega-3, training and training + omega-3. Combined exercise training (consisted of 30 mins running with 40-70% of reserve heart rate and resistance training included ten exercises, two sets, and each set consisted of 18-20 repetitions) performed for eight weeks and three sessions per week. Omega-3 supplementation was 2,000 mg daily (two 1000 mg capsules, one in the morning and one at night). Blood sampling was performed in pre and post-test (48 h after the last training session and omega-3 supplementation) stages, and interleukin (IL)-6, tumour necrosis factor (TNF)-α, and IL-10 levels were measured by ELISA. The dependent t-test results (pre- and post-test) indicated that there was a statistically significant difference (decrease) in HOMA-IR index, body fat percentage, body mass index, IL-6, and TNF-α in training and training + omega-3 groups, post-exercise ( P < 0.05). TNF-α was lower in the omega-3 ( P = 0.0103) training ( P = 0.0469) and training + omega-3 ( P = 0.0042) groups compared to the placebo group, post exercise. Moreover, IL-6 levels in the training ( P = 0.0411) group were lower than in the placebo group, post exercise. Combined training may reduce both TNF-α and IL-6 compared to placebo. In contrast, omega-3 alone or combined with combined training may only reduce TNF-α but not IL-6 concentrations compared to placebo.

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