Proportion of Nicotine Dependence Among High School Students Using Fagerstrom Test for Nicotine Dependence

Background: Patients with COPD exhibit muscle atrophy and dysfunction which lead into decondition state. This will in turn decrease maximal oxygen uptake (VO2 max) in tissues. Considered as the best predictor of cardiorespiratory endurance and survival, VO2max can be attenuated by aerobic training. This study aimed to assess the effects of lower-limb endurance training on VO2 max in COPD patient. Methods: An experimental study was conducted on 20 COPD patients in group C and D in June–July 2017 at USU Hospital. Patients were prescribed lower-limb exercise by stationary cycling with individualized dose, twice a week for 4 weeks, ranging from 5-20 minutes/session. VO2 max measurement was calculated pre-and post-intervention using Nury’s Formula specifically designed for Indonesian (r=0,68; P<0,005), which converts the distance of 6-minute walk test. Results: There was significant increase of VO2 max value (P<0,001) of all COPD subjects from 25,8±6,5 (baseline) to 28,3±6,9 mL/kg/menit. The increase in group C patients was slightly higher than group D although statistically not significant (3,36vs2,03 mL/kg/menit; P=0,36). The VO2 max increase was observed in all patients regardless their severity of obstruction (P=0,44). There was no exacerbation found during rehabilitation program. Conclusion: Four weeks of lower-limb endurance training effectively increased VO2 max of COPD patients. (J Respir Indo. 2017; 37(4): 283-7)