This study aimed to investigate the use of supplements among amateur boxers, including the types and brands of supplements and the ways and reasons for taking them. The sample is divided into three categories: elite, youth, and junior. The research method is a survey using a Google form which is distributed to all amateur boxers. The results showed that 200 amateur boxers used supplements, including 125 elite amateur boxers, 55 youth amateur boxers, and 20 junior amateur boxers. A total of 130 boxers received supplements from coaches, officials, administrators, and Indonesian National Sports Committee (KONI). A total of 111 amateur boxers used only one type of supplement. The most widely used types of supplements are multivitamins and minerals. A total of 102 amateur boxers used supplements within 4-5 months before the competition. Amateur boxers can feel good effects after using supplements. However, counseling about sports nutrition by doctors and nutritionists needs to be done so that amateur boxers can choose the right supplements and be more careful in using these supplements. These findings can be a reference for coaches and athletes to determine the right supplements to regulate nutrition better.
Study purpose. To investigate type of supplement and amount of supplement used as well as the perceived effect and needs of boxers. Materials and methods. This research is a survey conducted from December 2022 to January 2023. The instrument used a questionnaire (google form).Boxers have 2 criteria, namely: 1) are still active as athletes and 2) have been champions at the provincial level with a total of 155 boxers, 116 male boxers and 39 female boxers. Results. 74 boxers used more than 1 type of supplement (48%), 81 boxers used only 1 type of supplement (52%). Type of supplement, Creatine 23 boxers (8.1%). Whey Protein 14 boxers (4.9%), Fat Burner 93 boxers (32.9%). BCAA 26 boxers (9.2%). Amino 12 boxers (4.2%). Multivitamins and minerals 114 boxers (40.7%). The effect felt, 22 boxers felt effect is "very low" (14.21%), 40 boxers felt effect is “low” (25.80%), 53 boxers felt effect is "enough" (34.19%), 14 boxers felt effect is “high” (9.03%), 26 boxers felt effect is “very high” (16.77%). The need to use supplements, namely 7 boxers need supplements is "very low" (4.54%), 13 boxers need supplements is “low” (8.38%). 52 boxers need supplements is “enough” (33.54%). 44 boxers need supplements is "high" (28.38%). 39 boxers need supplements is "very high" (25.16%). Conclusion. Multivitamins and minerals and fat burners are popular supplements used by boxers because of their convenience and more beneficial benefits. However, boxers are still less concerned about how to use supplements. It is evident from the results that show that many boxers feel in the categories of "enough", "low" and "very low" in the use of supplements but boxers think that the use of supplements is really needed. Further research is expected, to determine the amount and type of supplement recommended specifically for boxing athletes.
The purpose of this study was to determine the effect of 8 weeks of training with resistance bands on the leg power of taekwondo athletes. This type of research is an experiment. The sample used was taekwondo athletes totalling 27 athletes with an age range of 14-17 years. The leg power test instrument uses a vertical jump. Data analysis techniques include descriptive analysis, prerequisite tests (normality and homogeneity tests), and hypothesis testing using paired sample tests. Analysis using the help of SPSS 23 software. The results showed that eight weeks of training with resistance bands was significant for increasing the leg power of taekwondo athletes. The increase in leg power of taekwondo athletes after being given eight weeks of training with resistance bands was 3.31%. For further research, it is hoped to further expand the scope of the study by examining other factors that influence increasing leg muscle power, as well as developing the research sample
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