INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH AND ANALYSIS ISSN(print): 2643-9840, ISSN(online): 2643-9875 Volume 05 Issue 08 August 2022 DOI: 10.47191/ijmra/v5-i8-38, Impact Factor: 6.261 Page No. 2204-2209 IJMRA, Volume 5 Issue 08 August 2022 www.ijmra.in Page 2204 Social Support as a Predictor of Athletes Achievement Motivation: A Correlation Study at the Glagah Wangi Demak Athletic Club Nafisa Arif Pambudi 1 , Ria Lumintuarso 2 , Afeb Chesa Arianto 3 , Amri Hartanto 4 , Andrian Rahman Ayudi 5 1,2,3,4,5 Department of Sport Science, Yogyakarta State University, Yogyakarta Indonesia. ABSTRACT: Social support is one of the factors that influence achievement motivation. Social support received can make individuals feel calm, cared for, self-confident, and competent. This study aims to determine the effect of social support on achievement motivation in athletic athletes. The type of research is ex post facto. The population is the athletics athletes of the Glagah Wangi Demak athletic club totaling 37 athletes with an age range of 14-19 years. The instrument in this research is a questionnaire. Data analysis using a simple regression test. The results showed that there was a significant effect of social support on the achievement motivation of athletic athletes. The contribution of social support to achievement motivation in athletic athletes is 27.90%. The better the athlete's social support, the higher the achievement motivation. It is hoped that people around athletes, such as parents, coaches, and friends, will provide the support that can help athletes so that they have a positive impact on their achievements. Athletes must maintain and develop enthusiasm while undergoing the best possible training program. Parents always encourage their children and provide good infrastructure to support children's achievements. KEYWORDS: social support, achievement motivation. INTRODUCTION The rise and fall of the achievements of the athletes show that there are certain factors that affect the achievements of athletes in competitions. The performance of athletes in a championship is influenced by many factors, one of which is the mental factor. Loehr (Benítez-Sillero et al., 2021) concluded that both coaches and athletes reported that at least 50% of success was influenced by psychological factors related to mental processes. In addition, (Gucciardi et al., 2017) show that in terms of strength, skill, and will to win, 90% of the critical success factors depend on mental aspects. Strictly speaking Gould et al. (Benítez-Sillero et al., 2021) also say that 82% of coaches state that mental strength is a determining factor in achieving sporting success. One of the factors that can affect achievement is the motivation factor. The role of motivation itself can foster a desire so that later it can lead to enthusiasm in practicing. Motivation is the basis of all achievement sports (Mudrak et al., 2018); (Blynova et al., 2020). Without determination and a strong desire to improve performance, all mental factors such as belief, intensity, focus, and emotion, will all be meaningless. The reason that motivation is so important is that the only thing contributing to sports performance is self-control (Kaur et al., 2020). An important motivation for athletes is achievement motivation. Achievement motivation is a power in the human mind to carry out an activity that is better, faster, more effective, and more efficient than the activities carried out previously (Werdhiastutie et al., 2020). Achievement motivation in sports is referred to as competitiveness (van de Pol et al., 2020), meaning that individuals with achievement motivation will be able to do a task or job well, be responsible for the tasks they do, and try to do tasks better than others. During the training process until the match, many problems arise that can affect the athlete's motivation in training. Several things can affect achievement motivation in athletes, for example, lack of self-confidence, boredom, and lack of love for the team. This lack of love in the team can occur when a member has lower abilities than friends who are on the same team. Frequent disputes between team members are also one of the factors that decrease achievement motivation in athletes. Based on observations at the Glagah Wangi Demak athletic club, there have been several problems that have occurred in recent years, including some athletes who lack motivation and lack of support from the surrounding environment. Based on an explanation from one of the trainers who explained that there were some athletes who were still indifferent if one of their friends