頁籤選單縮合
題名 | Effect of Passive Repetitive Isokinetic Training on Cytokines and Hormonal Changes |
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作者 | Lee, Shu-lin; Chen, Kenny Wen-chyuan; Chen, Szu-tah; Chu, Po-ju; Chen, Chuan-show; Hsu, Mei-chich; Shiang, Tzyy-yuang; Su, Mao-kuan; Chang, Mu-san; Chang, Ying-ling; Wang, Shyi-wu; | 書刊名 | 中國生理學雜誌 |
卷期 | 54:1 2011.02[民100.02] |
頁次 | 頁55-66 |
分類號 | 528.9012 |
關鍵詞 | Passive repetitive isokinetic training; PRI; Cytokine; Hormone; Human; |
語文 | 英文(English) |
英文摘要 | It is well known that muscle strength and power are important factors in exercise. Plyometrics is designed to gain muscle strength and power in a shock method. The passive repetitive isokinetic (PRI) machine is developed for plyometrics. The present study aims to understand the effect of ten-week PRI training in different intensities on human plasma concentration cytokines as well as hormonal changes. Thirty young male subjects were enrolled into the ten-week PRI training program and were divided randomly into traditional, low- and high-intensity PRI training groups. Blood samples were obtained before, during, after and 1-, 2- , 3-, 5- and 7-day (D) post-training. The plasma concentrations of cytokines and hormones were measured by an enzyme-linked immunosorbent assay (ELISA). Elevated plasma IL-2 was found in the subjects in all the training programs. Significant increases of proinflammatory cytokines IL-1β and TNF-α were observed at post 7 D in the high-intensity PRI training (29.5 ± 4.4 and 515.8 ± 127.1 pg/ml, respectively). No significance in differences in the plasma concentration of IL-6 was observed in the traditional and low-intensity PRI training. Significant elevation of IL-6 was found at post 5 D in high-intensity PRI training. Higher plasma IL-6 concentration was observed at post 3 and 5 D in high-intensity PRI training compared to low-intensity PRI training (P < 0.05). Significant elevation of plasma IL-15 during (week 6) and after (post 0 D) was observed in lowintensity PRI training. Also, there were differences between low-intensity PRI training and traditional training at post 0, 2, 3, and 5 D. The plasma concentration of cortisol was decreased to the lowest value (118.0 ± 17.3 ng/ml) at post 0 D in traditional training, then returned to the baseline (220.5 ± 19.1 ng/ml). In the high-intensity PRI training, but not in the low-intensity PRI training, the cortisol level dropped from 224.9 ± 25.8 ng/ml at post 0 D down to the 123.2 ± 22.6 ng/ml at post 1 D. Significant differenceswere found at post 1 and 5 D between low- and high-intensity PRI training, and post 0, 1, 2, and 3 D between traditional and high-intensity PRI training. Significant increased testosterone was found post 0, 1, 2, and 3 D in traditional training. Higher plasma testosterone was observed during and the recovery period in low-intensity, but not in high-intensity, PRI training. In conclusion, high-intensity PRI training could induce the proinflammatory cytokines, i.e. IL-1β and TNF-α, and decrease plasma cortisol in the recovery period. |
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