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<p>Pertambahan usia akan memberikan banyak perubahan pada tubuh manusia. Salah satunya dalah penurunan massa otot yang dialami lansia. Penurunan massa otot pada lansia dapat menimbulkan gangguan otot rangka yang progresif dan terjadi secara menyeluruh. Pada kelompok lansia terjadi percepatan hilangnya massa otot dan fungsi gerak sehingga menyebabkan peningkatan risiko jatuh, penurunan fungsional, kelemahan, dan kematian. Sesuai rekomendasi WHO bahwa usia lansia yaitu diatas 65 tahun selain melakukan latihan fisik bersifat aerobik juga melakukan latihan penguatan otot berupa latihan beban yang dilakukan 2 hari dalam satu minggu. Namun, belum banyak kelompok lansia yang mengetahui dan mampu melakukan latihan beban. Kegiatan ini dilakukan  dengan memberikan penyuluhan dan pelatihan bagi kelompok senam Prolanis Sehat Bugar Ceria di Kabupaten Karanganyar. Sehingga tujuan dari pengabdian ini adalah memberikan pengetahuan dan pengenalan berbagai gerakan  latihan beban yang dapat dilakukan secara mudah dan dapat dilakukan secara mandiri di rumah. Dalam pengabdian masyarakat ini, didapatkan hasil peningkatan pengetahuan para lansia tentang manfaat dan cara latihan beban serta dapat mempraktekkan gerakan latihan beban yang baik dan benar.</p><p> </p><p><strong>Kata kunci</strong> : latihan beban; lansia; sarkopenia<em> </em></p>

Cardiovascular disease (CVD) , as a cause of death and illness, is increasing, which is also associated with lower levels of cardiorespiratory fitness (CRF). Physical exercise can improve CRF and spur increases IL-6 (an anti-inflammatory) induced through this same means, which therefore reduces the risk of non-communicable diseases. In addition, high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) have a positive effect on health. This study aims to compare the effect of HIIT versus MICT on CRF and the acute response to exercise-induced plasma IL-6 in healthy and untrained adolescents. Methods: An experimental study with a pre-post design was conducted on 60 untrained and healthy adolescents aged 16.1 ± 0.4. The groups had been trained for 6 weeks with a frequency of three days weekly, while V O2max and blood sampling were performed before and after this activity. The CRF was tested using a multi stage fitness test (MFT), and IL-6 plasma levels were measured with ELISA methods. Results: HIIT increased CRF from 31.2 ± 5.8 to 35.6 ± 6.9 mL / kg / min (p <0.001) and MICT elevated V O2max from 32.3 ± 6.8 to 37.3 ± 6.7 mL / kg / min (p <0.001). In fact, there was no significant difference (p = 0.292) between the two types of training. There was no change in the acute response of the IL-6 at the time of the first and last exercise in both groups. Conclusion: Teenagers need to practice the HIIT and MICT training to reap the associated health benefits. The acute inflammatory response to exercise did not increase significantly, but there were elevated levels of plasma IL-6 afterward.

Cardiorespiratory capacity is inversely related to the risk of cardiovascular disease (CVD), and this can be improved through the classical type of continuous physical exercise and interval training with different intensity and duration. This study aims to compare the high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on the cardiorespiratory capacity of physically active adolescent girls. Data were collected from twenty-six participants, divided into two groups of 16±0.5 years for HIIT and 15.7±0.4 years for the MICT. All training sessions were monitored by a qualified trainer using a heart rate monitor (PolarRS800CX GPS), while VO2max was evaluated using the multistage fitness test (MFT) for 6 weeks. The results showed significant differences in the cardiorespiratory capacity (p=0.000) of HIIT and MICT with an increase of 26,7% and 37,6%, respectively. In conclusion, MICT produces higher CRF than HIIT in physically active adolescent girls.

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