Cardiorespiratory Responses to Short Bouts of Resistance Training Exercises in Individuals With Chronic Obstructive Pulmonary Disease: A COMPARISON OF EXERCISE INTENSITIES

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Abstract

Purpose:

Resistance training is recommended in pulmonary rehabilitation for people with chronic obstructive pulmonary disease (COPD); however, the acute cardiorespiratory responses to different intensities of resistance training are not known. We compared acute cardiorespiratory responses with high-intensity versus low-intensity resistance exercises in persons with COPD and healthy, matched controls. This research may assist in developing training parameters in COPD.

Methods:

Participants (n = 10 per group) performed 1 set of 10 repetitions of leg extension and arm elevation at 2 intensities: 40% (low) and 80% (high) of 1-repetition maximum. Minute ventilation (

Methods:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM1/v/2017-08-29T142559Z/r/image-png

Methods:

E), oxygen uptake (

Methods:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM2/v/2017-08-29T142559Z/r/image-png

Methods:

O2), and heart rate (HR) data were collected continuously and expressed as absolute values and relative to values at

Methods:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM3/v/2017-08-29T142559Z/r/image-png

Methods:

O2peak derived from a cardiopulmonary exercise test. Blood pressure, oxygen saturation, and rating of perceived exertion (RPE) were monitored before and after each set of exercises.

Results:

Individuals with COPD showed similar

Results:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM4/v/2017-08-29T142559Z/r/image-png

Results:

E,

Results:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM5/v/2017-08-29T142559Z/r/image-png

Results:

O2, and HR with high- versus low-intensity exercises. RPE was higher after high- vs low-intensity leg extension (4 ± 1.4 vs 2 ± 1, P < .005) and arm elevation (3 ± 2 vs 1 ± 1.4, P < .005). Compared with healthy participants, relative

Results:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM6/v/2017-08-29T142559Z/r/image-png

Results:

O2,

Results:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM7/v/2017-08-29T142559Z/r/image-png

Results:

E, and HR were higher in COPD (≅40% vs 20% of the

Results:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM8/v/2017-08-29T142559Z/r/image-png

Results:

O2peak; ≅60% vs 20% of

Results:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM9/v/2017-08-29T142559Z/r/image-png

Results:

Epeak; and ≅80% vs 20% of HRpeak; all Ps ≤ .004). Absolute responses and RPE were similar between groups, irrespective of intensity and exercise.

Conclusion:

Immediate cardiorespiratory responses to an acute bout of resistance exercise appear to be independent of the exercise intensity in COPD. Although people with COPD are working closer to their

Conclusion:

JOURNAL/jcprh/04.02/01273116-201709000-00011/math_11MM10/v/2017-08-29T142559Z/r/image-png

Conclusion:

O2peak, their responses and RPE are comparable with healthy controls.

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