PURPOSE: Exercising or doing physical activity in polluted air could expose a person to the adverse health effects of air pollution. This study aimed to compare the cardiovascular and hematologic indices following an incremental exercise test (shuttle run) under clean versus polluted air conditions. METHODS: Nineteen male athletes aged 21-27 years were assigned to either a trained athletes group (TA, n = 10) or a complete training cessation/detrained athletes group (DA, n = 9) at least 3-4 months after their competitive season. All participants performed the multi-stage shuttle run test on two separate days in either polluted air (37.4 carbon monoxide part per million) or clean air (2.5 carbon monoxide part per million) condition. RESULTS: When compared to the clean air environment, progressive incremental exercise in polluted air condition significantly (p < .05) decreased maximal oxygen uptake (VO2max), red blood cell count, and hematocrit for both TA and DA groups. Meanwhile, the participants' mean corpuscular hemoglobin, mean red blood cell volume, white blood cells, and platelets in these two groups increased significantly (p < .05) when they were exercised in the polluted air ambiance. Maximal heart rate and heart rate recovery showed significant (p = .04) increases only in the DA group. However, hemoglobin concentration remained unchanged in both groups. CONCLUSION: Acute exposure to high concentrations of pollutants during exercise resulted in decline in cardiovascular functions and hematological parameters in healthy athletes.
PURPOSE: Exercising or doing physical activity in polluted air could expose a person to the adverse health effects of air pollution. This study aimed to compare the cardiovascular and hematologic indices following an incremental exercise test (shuttle run) under clean versus polluted air conditions. METHODS: Nineteen male athletes aged 21-27 years were assigned to either a trained athletes group (TA, n = 10) or a complete training cessation/detrained athletes group (DA, n = 9) at least 3-4 months after their competitive season. All participants performed the multi-stage shuttle run test on two separate days in either polluted air (37.4 carbon monoxide part per million) or clean air (2.5 carbon monoxide part per million) condition. RESULTS: When compared to the clean air environment, progressive incremental exercise in polluted air condition significantly (p < .05) decreased maximal oxygen uptake (VO2max), red blood cell count, and hematocrit for both TA and DA groups. Meanwhile, the participants' mean corpuscular hemoglobin, mean red blood cell volume, white blood cells, and platelets in these two groups increased significantly (p < .05) when they were exercised in the polluted air ambiance. Maximal heart rate and heart rate recovery showed significant (p = .04) increases only in the DA group. However, hemoglobin concentration remained unchanged in both groups. CONCLUSION: Acute exposure to high concentrations of pollutants during exercise resulted in decline in cardiovascular functions and hematological parameters in healthy athletes.
Authors: Nicholas L Mills; Ken Donaldson; Paddy W Hadoke; Nicholas A Boon; William MacNee; Flemming R Cassee; Thomas Sandström; Anders Blomberg; David E Newby Journal: Nat Clin Pract Cardiovasc Med Date: 2008-11-25
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Authors: Michał Zacharko; Robert Cichowicz; Marcin Andrzejewski; Paweł Chmura; Edward Kowalczuk; Jan Chmura; Marek Konefał Journal: Int J Environ Res Public Health Date: 2021-12-08 Impact factor: 3.390