Cho Su Youn, Roh Hee Tae
Exercise Physiology Laboratory, Department of Physical Education, Yonsei University, Republic of Korea.
Department of Physical Education, College of Arts and Physical Education, Dong-A University, Republic of Korea.
J Phys Ther Sci. 2016 May;28(5):1574-6. doi: 10.1589/jpts.28.1574. Epub 2016 May 31.
[Purpose] This study investigated the effect of the use of trekking poles on muscle and cartilage damage and fatigue during downhill walking in obese women. [Subjects and Methods] Subjects included eight obese women who had a body fat percentage greater than 30. Subjects performed downhill walking without a trekking pole (NP) and with a trekking pole (TP) at 50% heart rate reserve for 30 minutes on a treadmill. The treadmill was set at a 15% downhill declination. Blood samples were collected to examine muscle damage (serum creatine kinase [CK] and lactate dehydrogenase [LDH] levels), cartilage damage (serum cartilage oligomeric matrix protein [COMP] levels), and fatigue (plasma lactate levels) at the pre-walking baseline (PWB), immediately after walking (IAW), and 2 hours post-walking (2HPW). [Results] The CK, LDH, COMP, and lactate levels were significantly increased IAW when compared with those at the PWB in both trials. In addition, in the NP trial, the CK, LDH, and COMP levels were significantly increased at 2HPW when compared with those at the PWB. [Conclusion] Downhill walking can cause muscle and cartilage damage, and our results suggest that the use of a trekking pole can reduce temporary muscle and cartilage damage after downhill walking.
[目的]本研究调查了使用登山杖对肥胖女性下坡行走时肌肉、软骨损伤及疲劳的影响。[对象与方法]研究对象包括8名体脂百分比大于30%的肥胖女性。研究对象在跑步机上以心率储备的50%进行无登山杖（NP）和有登山杖（TP）的下坡行走，持续30分钟。跑步机设置为15%的下坡坡度。在行走前基线（PWB）、行走后即刻（IAW）和行走后2小时（2HPW）采集血样，检测肌肉损伤（血清肌酸激酶[CK]和乳酸脱氢酶[LDH]水平）、软骨损伤（血清软骨寡聚基质蛋白[COMP]水平）和疲劳（血浆乳酸水平）。[结果]在两项试验中，与PWB时相比，IAW时CK、LDH、COMP和乳酸水平均显著升高。此外，在NP试验中，与PWB时相比，2HPW时CK、LDH和COMP水平显著升高。[结论]下坡行走会导致肌肉和软骨损伤，我们的研究结果表明，使用登山杖可减少下坡行走后暂时的肌肉和软骨损伤。
