Pengaruh Latihan Beban terhadap Perubahan Kadar Leptin pada Perempuan Obesitas
Keywords:
leptin, obesity, weight training, obesitas, latihan bebanAbstract
Abstract: The cause of obesity can be caused by unhealthy lifestyles and eating patterns and lack of physical activity. Obesity is associated with leptin resistance, with individuals showing increased energy requirements as well as lower levels of physical activity despite higher circulating leptin levels. The purpose of the research that the researchers conducted was to analyze the effect of weight training on changes in leptin concentrations in obese women. The true experimental method was used in this study with the randomized pretest-posttest control group design. The subjects studied were 18 obese women aged 20-25 years in Malang City with a Body Mass Index of 25-30 kg/m2. The subjects were divided into two groups, the control group (K1) and weight training (K2). The analysis technique was carried out using SPSS 21 and tested through the Paired Samples T-Test with a significance level of 5%. The results showed a p-value of 0.724 (p>0.05), thus no significant difference was found in the average pretest leptin levels in K1 and K2, while the average posttest leptin showed a p-value of 0.000 (p<0.05) and p-value delta shows a value of 0.002 (p<0.05). The results showed that weight training performed at moderate intensity, three times per week for a total of eight weeks, had a high level of effectiveness in reducing leptin levels in obese women.
Abstrak: Pemicu terjadinya obesitas dapat disebabkan oleh pola hidup, kurang sehatnya pola makan, dan minimalnya aktivitas fisik. Obesitas dikaitkan dengan resistensi leptin, dimana individu menunjukkan peningkatan kebutuhan energi serta tingkat aktivitas fisik yang lebih rendah meskipun tingkat leptin yang bersirkulasi lebih tinggi. Tujuan atas penelitian yang peneliti lakukan yakni dalam rangka melakukan analisis pengaruh latihan beban terhadap perubahan konsentrasi leptin pada perempuan obesitas. Metode true experimental digunakan pada penelitain ini dengan rancangan penelitian the randomized pretest-posttest control group design. Subjek yang diteliti ialah 18 perempuan obesitas berusia 20–25 tahun di Kota Malang dengan Indeks Massa Tubuh 25-30 kg/m2. Subjeknya terbagi atas dua kelompok, kelompok kontrol (K1) serta latihan beban (K2). Teknik analisis melalui bantuan SPSS 21 serta diuji melalui Paired Samples T-Test yang bertingkat signifikansi 5%. Hasilnya memperlihatkan p-value yang bernilai 0.724 (p>0.05), maka tak ditemukan perbedaan rata-rata kadar leptin yang signifikan saat pretest pada K1 dan K2, sedangkan rata-rata leptin posttest menunjukkan nilai p-value 0.000 (p<0.05) serta p-value delta menunjukkan nilai 0.002 (p<0.05). Hasil penelitian menunjukkan bahwa latihan beban yang dilakukan dengan intensitas sedang, berfrekuensi tiga kali di tiap minggunya dalam waktu total delapan minggu, memiliki tingkat keefektifitasan yang tinggi terkait penurunan kadar leptin pada perempuan obesitas.
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