Participants
The coal miners of Rampur colliery, Odisha, India were recruited as study participants. The study sample consisted of 81 non-smoking male coal miners in the age range 36 to 60 years. Of 279 coal miners screened, 162 failed at least one exclusion criterion; another 36 refused informed consent for the investigation; 81 signed up for the trial, but after 9 further dropouts, final data were only available for 72 [Figure 1].
Inclusion criteria
Coal miners (male), non smokers, aged 36 to 60 years; moderate to severe stable physician-confirmed COPD satisfying Global Initiative for Obstructive Lung Disease (GOLD) criteria; FEV1/FVC ratio < 0.7 and post- bronchodilator FEV1 < 80% predicted; clinically stable for at least 3 months prior to enrolment, able to walk without aid, willing to complete all study assessments, and provide informed consent.
Exclusion criteria
Recent COPD exacerbation, unstable angina, respiratory tract infection within 1 month of the start of the study, myocardial infarction, angioplasty, heart surgery in the previous three months, basal BP > 180/100 mmHg, resting pulse rate > 120 bpm, Body Mass Index (BMI) > 35 kg/m2, injury-free; no history of hospitalization; previous involvement in yoga rehabilitation programs; neuromuscular conditions interfering with exercise tests; present and ex-smokers (smoking …show more content…
Post exercise peripheral capillary oxygen saturation (SpO2%) and pulse rate were assessed for every participant using a portable pulse-oximetry device (Nonin 9570 LED pulse oximeter, USA). Percentage of peripheral capillary oxygen saturation was measured after connecting the optical diodes on the patients’ fingers by trans-cutaneous pulse oximetry. Each experiment was performed three times and mean values recorded. None had a baseline SpO2 less than 88% or received domiciliary oxygen
The coal miners of Rampur colliery, Odisha, India were recruited as study participants. The study sample consisted of 81 non-smoking male coal miners in the age range 36 to 60 years. Of 279 coal miners screened, 162 failed at least one exclusion criterion; another 36 refused informed consent for the investigation; 81 signed up for the trial, but after 9 further dropouts, final data were only available for 72 [Figure 1].
Inclusion criteria
Coal miners (male), non smokers, aged 36 to 60 years; moderate to severe stable physician-confirmed COPD satisfying Global Initiative for Obstructive Lung Disease (GOLD) criteria; FEV1/FVC ratio < 0.7 and post- bronchodilator FEV1 < 80% predicted; clinically stable for at least 3 months prior to enrolment, able to walk without aid, willing to complete all study assessments, and provide informed consent.
Exclusion criteria
Recent COPD exacerbation, unstable angina, respiratory tract infection within 1 month of the start of the study, myocardial infarction, angioplasty, heart surgery in the previous three months, basal BP > 180/100 mmHg, resting pulse rate > 120 bpm, Body Mass Index (BMI) > 35 kg/m2, injury-free; no history of hospitalization; previous involvement in yoga rehabilitation programs; neuromuscular conditions interfering with exercise tests; present and ex-smokers (smoking …show more content…
Post exercise peripheral capillary oxygen saturation (SpO2%) and pulse rate were assessed for every participant using a portable pulse-oximetry device (Nonin 9570 LED pulse oximeter, USA). Percentage of peripheral capillary oxygen saturation was measured after connecting the optical diodes on the patients’ fingers by trans-cutaneous pulse oximetry. Each experiment was performed three times and mean values recorded. None had a baseline SpO2 less than 88% or received domiciliary oxygen