Background: Zumba recently is one of the most popular physical exercise particularly among females. Zumba is a combination of music, step aerobics, and variety of dance movements from Latin America. The exercise is fun and relatively low cost, Zumba can also increase the strength of respiratory muscles so as to improve lung function and capacityAim: To observe the effect of Zumba routine exercise on peak expiratory flow rate in young femaleMethod: The study was an observational analytic using cross sectional approach. Subjects were participants of Zumba routine exercise cathegorized to <8 weeks and ≥8 weeks exercise periods. PEFR was measured by mini-Wright peak flowmeter. Correlation between the period of Zumba exercise and PEFR was analyzed using Spearman's test.Result: From the 24 subjects, the mean of PEFR in participants who were conducted Zumba exercise for <8 weeks was 345.42 ± 30.19 L/min with the lowest score was 300 L/min and the highest was 400 L/min. The PEFR mean of subjects who experienced Zumba exercise for ≥8 weeks was 437.92 ± 19.59 L/min with the lowest was 400 L/min and the highest 465 L/min. The Spearman's test showed a very strong degree of positive correlation between period of Zumba exercise with PEFR (r=0,86; p=0,000)Conclusion: The study found the differences between the mean of PEFR in subjects who did Zumba regular exercise for <8 weeks and ≥8 weeks. This study also showed very strong positive correlation between period of Zumba exercise with PEF
