TY - JOUR
T1 - Aerobic exercise training without weight loss reduces dyspnea on exertion in obese women
AU - Bernhardt, Vipa
AU - Stickford, Jonathon L.
AU - Bhammar, Dharini M.
AU - Babb, Tony G.
N1 - Funding Information:
This research was supported by National Institutes of Health Grant HL096782 , King Charitable Foundation Trust , Cain Foundation , and Texas Health Presbyterian Hospital Dallas . The sponsors had no input in the development of the research and manuscript.
PY - 2016/1/15
Y1 - 2016/1/15
N2 - Dyspnea on exertion (DOE) is a common symptom in obesity. We investigated whether aerobic exercise training without weight loss could reduce DOE. Twenty-two otherwise healthy obese women participated in a 12-week supervised aerobic exercise training program, exercising 30min/day at 70-80% heart rate reserve, 4 days/week. Subjects were grouped based on their Ratings of Perceived Breathlessness (RPB) during constant load 60W cycling: +DOE (n=12, RPB≥4, 37±7 years, 34±4kg/m2) and -DOE (n=10, RPB≤2, 32±6 years, 33±3kg/m2). No significant differences between the groups in body composition, pulmonary function, or cardiorespiratory fitness were observed pre-training. Post-training,peak was improved significantly in both groups (+DOE: 12±7, -DOE: 14±8%). RPB was significantly decreased in the +DOE (4.7±1.0-2.5±1.0) and remained low in the -DOE group (1.2±0.6-1.3±1.0) (interaction p<0.001). The reduction in RPB was not significantly correlated with the improvement in cardiorespiratory fitness. Aerobic exercise training improved cardiorespiratory fitness and DOE and thus appears to be an effective treatment for DOE in obese women.
AB - Dyspnea on exertion (DOE) is a common symptom in obesity. We investigated whether aerobic exercise training without weight loss could reduce DOE. Twenty-two otherwise healthy obese women participated in a 12-week supervised aerobic exercise training program, exercising 30min/day at 70-80% heart rate reserve, 4 days/week. Subjects were grouped based on their Ratings of Perceived Breathlessness (RPB) during constant load 60W cycling: +DOE (n=12, RPB≥4, 37±7 years, 34±4kg/m2) and -DOE (n=10, RPB≤2, 32±6 years, 33±3kg/m2). No significant differences between the groups in body composition, pulmonary function, or cardiorespiratory fitness were observed pre-training. Post-training,peak was improved significantly in both groups (+DOE: 12±7, -DOE: 14±8%). RPB was significantly decreased in the +DOE (4.7±1.0-2.5±1.0) and remained low in the -DOE group (1.2±0.6-1.3±1.0) (interaction p<0.001). The reduction in RPB was not significantly correlated with the improvement in cardiorespiratory fitness. Aerobic exercise training improved cardiorespiratory fitness and DOE and thus appears to be an effective treatment for DOE in obese women.
KW - Breathlessness
KW - Cardiorespiratory fitness
KW - Exercise
KW - Obesity
KW - Shortness of breath
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U2 - 10.1016/j.resp.2015.11.004
DO - 10.1016/j.resp.2015.11.004
M3 - Article
C2 - 26593640
AN - SCOPUS:84947969306
VL - 221
SP - 64
EP - 70
JO - Respiratory Physiology and Neurobiology
JF - Respiratory Physiology and Neurobiology
SN - 1569-9048
ER -