~ 266 ~ International Journal of Physiology, Nutrition and Physical Education 2017; 2(2): 266-268 ISSN: 2456-0057 IJPNPE 2017; 2(2): 266-268 © 2017 IJPNPE www.journalofsports.com Received: 21-05-2017 Accepted: 22-06-2017 Sevy Astriyana Post Graduate School, Universitas Sebelas Maret, Surakarta, Indonesia Muchsin Doewes Post Graduate School, Universitas Sebelas Maret, Surakarta, Indonesia Sapta Kunta Purnama Post Graduate School, Universitas Sebelas Maret, Surakarta, Indonesia Correspondence Muchsin Doewes Post Graduate School, Universitas Sebelas Maret, Surakarta, Indonesia The difference effect between ice massage and myofascial trigger point dry needling to reduce lactic acid in delay onset muscle soreness (Doms) Sevy Astriyana, Muchsin Doewes and Sapta Kunta Purnama Abstract Delay onset muscle soreness (DOMS) is associated with excessive muscle work due to the eccentric muscle contraction, that cause the accumulation metabolic residue called lactic acid. This study aimed to know the difference effect among ice massage and dry needling to reduce the levels of lactic acid. This research is an experimental study with pretest-posttest design. Twenty subjects that consist of physical therapystudents were divided into two experiment groups. All respondents were given an interval training in first session to trigger accumulation of lactic acid. The data of lactic acid levels was taken on the second day of the experiment while the DOMS appeared. The respondent lactic acid were checked before and after, they were given the treatment based on the experiment groups. The technique of analysis data used independen t-test. There is difference effect between ice massage and myofascial trigger point dry needling to reduce lactic acid in delay onset muscle sorenees. myofascial trigger point dry needling interfere mechanical, neurophysiologic and chemical in soft tissue. It also has gate control theory mechanism that inhibit pain related to delay onset muscle soreness. Myofascial trigger point dry needling has different effect to reduce lactic acid than ice massage was proved by p 0,046< 0,05. Keywords: ice massage, dry needling, lactic acid, DOMS Introduction Delay Onset Muscle Soreness (DOMS) is associated with excessive muscle activity due to eccentric muscle contraction, which causes the accumulation of metabolic residues called lactic acid. DOMS is characterized by the appearance of pain that often leads to a decrease in desire for exercise. Exercise that usually has the potential to cause tissue damage or DOMS is an eccentric exercise such as downhill running. Eccentric exercise will stimulate the synthesis of prostaglandins and leukocytes. Prostaglandins stimulate pain by affecting type II and III receptors through chemical stimulation. Leukocytes increase permeability of blood vessels and attack neutrophils so damage occurs. There a respiratory burst where neutrophils produce free radicals that harm cell membrane. Swollen is caused by the accumulation of fluid which flow from blood vessel into the interstitial spacewhileswelling distribute the pain sensation through certain area. The damage in delay muscle soreness has sporadic charactheristic that can spread surrounding tissues. The symptoms occur within 24-48 hours after exercise and disappear in 98 hours 123 High intensity exercise for 30-120 seconds, get the level of lactic acid up to 15-25 Mm that measured after 3-8 minutes exercise. Enormous of increasing lactic acid levels lead to ischemic and hypoxia. Lactic acid arises from ATP-PC process which belong to anaerobic metabolism. In anaerobic physical exercise, oxygen insufficiency in mitochondria of muscle fibers occurs, due to the rate of energy demand exceeds oxygen supply to the mitochondria which deliver by the oxygen transport system. This cause mitochondria get oxygen insufficiency in anaerobic glycolysis process that produces lactic acid from pyruvic acid in the cytoplasm of muscle cells. If anaerobic glycolysis occurs continuously there is accumulation of lactic acid in the blood. In this study the exercise used to trigger lactic acid encapsulation is the interval training. Interval training is an exercise that uses a period of change between work period and rest period of exercise with 2: 1 ratio. Interval training uses a high-intensity work phase and fast of rest phase allow anaerobic metabolism. After given interval training, subjects