<p>Obesity is a problem that concerns the world. The increasing of obese prevalence is relate to the risk of comorbidities that occurs through the insulin resistance mechanism. Moderate intensity physical activity can prevent insulin resistance and increase insulin sensitivity. The method is numerical comparative analytic research with a quasi-experimental design and the method of taking the repetitive measurement data (pre test - post test design) with a control group. Total of the samples are 30 people, divided into positive control groups (K1), negative control group (K2) and the treatment group (P). Analysis using Paired T-Test shows the value of p = 0.087 in group P1, p = 0.058 in group P2 and p = 0,000 in group P. Analysis using One Way Anova shows the value of p= 0.002 between P and K1, p= 0.085 between P and K2, p= 0.474 between K1 and K2. There is a statistically significant effect of moderate-intensity physical activity in the form of 30 minutes of brisk walking on lowering blood glucose levels in obese men.</p><p> </p><p><strong>Keywords:</strong> Blood glucose level, insulin resistance, moderate intensity of physical activity, obesity.</p>

Peningkatan prevalensi obesitas berbanding lurus dengan risiko penyakit penyerta (komorbid) yang disebabkan oleh obesitas seperti diabetes melitus (DM) tipe 2 yang terjadi melalui mekanisme resistensi insulin. Jenis penelitian analitik komparatif numerik berpasangan dengan desain quasi experimental dan metode pengambilan data pengukuran berulang (pre testpost test design) dengan kelompok kontrol. Jumlah sampel sebanyak 30 orang, terbagi menjadi kelompok kontrol positif (K1) terdiri atas 10 orang obesitas grade II (indeks masa tubuh ≥30 kg/m 2), kelompok kontrol negatif (K2) terdiri atas 10 orang normal (indeks masa tubuh 18,55-22,99 kg/m 2) dan kelompok perlakuan (P) terdiri atas 10 orang obesitas grade II (indeks masa tubuh ≥30 kg/m 2) yang diberikan perlakuan aktivitas fisik intensitas sedang berupa berjalan cepat selama 30 menit atau setara dengan HRmax 55-70 persen.Analisis menggunakan Paired T-Test untuk melihat perbedaan pretest dan posttest menunjukkan nilai p=0,087 pada kelompok P1, p=0,058 pada kelompok P2 dan p=0,000 pada kelompok P. Analis menggunakan One Way Anova untuk melihat perbedaan antar kelompok menunjukkan nilai p=0,002 antara P dan K1, p=0,085 antara kelompok P dan K2, p=0,474 antara kelompok K1 dan K2. Terdapat pengaruh yang signifikan secara statistik aktivitas fisik intensitas sedang berupa berjalan cepat selama 30 menit terhadap kadar glukosa darah sewaktu pada laki-laki obesitas Kata Kunci: Aktivitas fisik intensitas sedang, glukosa darah, obesitas.

<p><em>Obesity is a state of abnormal or excessive fat accumulation in the adipose tissue of the body that could potentially cause the health problems. The prevalence of obesity increases every year in Indonesia. Based on the Basic Health Research (RisKesDas) 2018, Indonesian obesity incidences ranked 18, 8% in 2007, increased to 26, 6% in 2013 and topping 31, 0% in 2018. The increase of obesity prevalence is directly proportional to comorbid conditions. Insulin insensitivity is seen in obese patients, and may lead to insulin resistance. This correlates with a disrupted glucose absorption rate, which is induced by insulin. Glucose molecules could not enter the cell and could not be utilized by the cells, as a result there is an n increase in blood glucose levels. Conditions with abnormally high glucose levels is called hyperglycemia. Hyperglycemia can lead into a variety chronic diseases, like diabetes mellitus. One of the straightforward, cost-effective and efficacious therapy strategies that can be executed to overcome obesity and increase the insulin sensitivity is through increased physical activity. Categories of physical activity are divided between sedentary, light, moderate, vigorous, and high, where each category has varying energy demands. Physical activity that is carried out consistently and routinely may further reduce body weight, as well as maintain proportional body weight in the long run and further increase insulin sensitivity, and reduce the risk chronic disease like diabetes mellitus.</em></p>