Daftar Isi:
  • Penelitian ini bertujuan untuk membandingkan metode contrast bath dan metode massage terhadap penurunan kadar asam laktat setelah melakukan latihan beban dengan menggunakan metode eksperimen dengan desain one group pre-test and post-test design pada Parung Bogor Community. Instrumen dalam penelitian ini yaitu mengukur kadar asam laktat menggunakan Accutrend Lactat Meter. Jumlah sampel dalam penelitian ini yaitu 20 orang laki-laki yang diambil menggunakan teknik purposive sampling. Teknik pengambilan data dalam penelitian ini yaitu menggunakan pre-test dan post-test pada sampel penelitian. Pre-test dilakukan dengan mengukur kadar asam laktat setelah melakukan latihan beban. Lalu melakukan post-test setelah sampel diberi perlakuan contrast bath dan massage kemudian diproses dan dianalisis menggunakan uji t. Hasil uji t menunjukkan (1) Hasil uji t dependent sebelum dan sedudah metode contrast bath menunjukan thitung 16,993 dan ttabel 2,262. thitung > ttabel maka H0 ditolak, H1 diterima, artinya terdapat pengaruh metode contrast bath terhadap penurunan kadar asam laktat. (2) Hasil uji t denpendent sebelum dan sesudah metode massage menunjukan thitung 11,635 dan ttabel 2,262. thitung > ttabel maka H0 ditolak, H1 diterima, artinya terdapat pengaruh metode massage terhadap penurunan kadar asam laktat. (3) Hasil uji t independent perbandingan pengaruh metode contrast bath dan metode massage thitung 1,822 dan ttabel 1,734. thitung > ttabel artinya terdapat perbedaan pengaruh dimana metode contrast bath lebih banyak menurunkan kadar asam laktat dibanding metode massage. Kata Kunci : Asam Laktat, contrast bath, massage This study aims to compare the contrast bath method and massage method to reduce levels of lactic acid after weight training using experimental methods with one group pre-test and post-test design designs at Parung Bogor Community. The instrument in this study was to measure levels of lactic acid using the Accutrend Lactic Meter. The number of samples in this study were 20 men taken using purposive sampling technique. Data collection techniques in this study are using pre-test and post-test in the study sample. Pre-test is done by measuring levels of lactic acid after weight training. Then do a post-test after the sample is treated contrast bath and massage then processed and analyzed using the t test. T test results show (1) t dependent test results before and after the contrast bath method showed t count 16.993 and t table 2.262. t count > t table then h0 is rejected, h1 is accepted, meaning that there is an effect of the contrast bath method on decreasing lactic acid levels. (2) The results of the t-test before and after the massage method showed that the t count was 11.635 and the t table was 2.262. t count > t table then h0 is rejected, h1 is accepted, meaning that there is an influence of the massage method on the decrease in lactic acid levels. (3) Independent t test results comparing the effect of the contrast bath method and the t count massage method 1,822 and t table 1.734. tcount > ttable means that there is a difference in effect where the contrast bath method decreases lactic acid levels more than the massage method. Keywords: Lactic Acid, contrast bath, massage