咖啡因增補對不同體能水準之延遲性肌肉酸痛的影響

Effects of Fitness Level and Caffeine Ingestion on Delayed Onset Muscle Soreness

陳厚諭(Hou-Yu Chen) ； 王鶴森(Ho-Seng Wang)

《大專體育學刊》 12卷2期 (2010/06) Pp. 103-111

https://doi.org/10.5297/ser.1202.012

摘要

本研究目的在探討咖啡因增補對不同體能水準者於離心運動後所引起的延遲性肌肉酸痛 (delayed onset muscle soreness, DOMS) 之生理及生化反應的影響。本研究依最大耗氧量分成 10 名高體能組 (high fitness level, HF; V˙O2max = 54.5 ± 3.7 ml/kg/min) 及 10 名低體能組 (low fitness level, LF; V˙O2max = 44.7 ± 3.0 ml/kg/min) 之大學男生，先於跑步機上以 70% V˙O2max 的強度進行一次 30 分鐘的下坡跑（-15% 斜度）誘發股四頭肌產生 DOMS，隨後依雙盲設計及組內平衡次序法於誘發 DOMS 後的 24 或 48 小時分別增補咖啡因或安慰劑膠囊 10 ml/kg，並在增補前及增補後 1 小時檢測最大自主等長肌力、酸痛指數及肌酸激酶。實驗所得資料採獨立 樣本單因子共變數及混合設計二因子變異數分析進行統計處理。本研究結果：在增補因子方面，HF 組與 LF 組在增補咖啡因後所提升的最大自主等長肌力百分比 (HF: 7.0 ± 9.9%, LF: 5.1 ± 10.8%)，皆顯著高於增補安 慰劑 (HF: -0.1 ± 4.7%, LF: 0.4 ± 5.2%; p < .05)；咖啡因增補後降低的酸痛指數百分比 (HF: -18.2 ± 22.2%, LF: -11.9 ± 11.3%)，亦顯著低於增補安慰劑 (HF: 7.2 ± 18.5%, LF: 1.7 ± 11.5%; p < .05)；兩組肌酸激酶於增補咖 啡因或安慰劑後改變之活性值，皆未達到顯著差異。本研究結論：誘發 DOMS 後每公斤體重增補 10 ml/kg 之咖啡因能顯著降低運動中肌肉酸痛及顯著提升最大自主等長肌力，此種效果不會因為體能水準不同而改變； 另外，咖啡因的增補雖能顯著降低肌肉酸痛之不適感，但其效果並非來自減緩肌肉發炎與損傷的程度。

關鍵字

肌酸激酶 ； 最大自主等長肌力 ； 下坡跑

並列摘要

The purpose of this study was to examine the effect of caffeine ingestion on delayed onset muscle soreness (DOMS) which was caused by eccentric exercise of different fitness levels. Ten high fitness level (HF; VO(subscript 2max)=54.5±3.75 ml/kg/min) and ten low fitness level (LF; VO(subscript 2max)=44.7±3.06 ml/kg/min) college male students performed a 30 minutes downhill running (-15%) to elicit quadriceps' DOMS. All subjects were ingested with caffeine (10 mg/kg) and placebo 24 or 48 hours after inducing DOMS under double-blind controlled and counter balance design. Maximal voluntary isometric contractions (MVIC), perceived muscle soreness scale and creatine kinase (CK) concentration were measured one hour before and after the downhill running. Data were analyzed by one-way analysis of variance and mixed design two-way ANOVA. After caffeine ingestion, HF and LF participants' MVIC force % were significantly increased (HF: 7.0±9.9%, LF: 5.1±10.8%) than placebo ingestion (HF: -0.1±4.7%, LF: 0.4±5.2%; p＜.05). However, muscle soreness scale % (HF: -18.2±22.2%, LF: -11.9±11.3%) was significantly reduced after caffeine ingestion compared to placebo ingestion (HF: 7.2±18.5%, LF: 1.7±11.5%; p＜.05). Nevertheless, no significant difference was noticed in CK activity. This data suggests that 10 mg/kg caffeine ingestion could increase the MVIC and reduce pain after downhill running-induced DOMS, and these effects depended on different fitness levels. Furthermore, caffeine ingestion significantly reduce muscle soreness, but no relevance of reducing the muscle inflammation and the degree of hurt.

並列關鍵字

creatine kinase ； maximal voluntary isometric contractions ； downhill running

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