Cardiovascular, metabolic, and ventilatory responses of women to equivalent cycle ergometer and treadmill exercise

Miles, D. S.; Critz, Jerry B.; Knowlton, R. G.

doi:10.1249/00005768-198021000-00004

Cited by 55 publications

(41 citation statements)

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“…2,4 Furthermore, the cardiovascular response during cycle ergometer exercise at submaximal exercise level is close to that obtained during equivalent treadmill exercise. [19][20][21][22] It must also be taken into account that patients have to learn how to use the equipment so that they can continue the exercise training at home or use facilities for sport and recreation after discharge. 4 In the present study 40% (17/42) of the patients with AMI withdrew from the phase I rehabilitation program because the ∆SBP was >30 mmHg during exercise, even at the low-intensity workload.…”

Section: Discussionmentioning

confidence: 99%

“…Although maximal exercise with a cycle ergometer produced higher BP and lower oxygen uptake than on a treadmill, cardiovascular response and oxygen uptake during cycle ergometer exercise at 40 W, corresponding to 3.5 metabolic equivalents or less than anaerobic intensity level, were close to those during equivalent treadmill exercise. [19][20][21][22] However, there are few studies demonstrating the adaptation of post-MI patients to exercise training using either a treadmill or cycle ergometer, although exercise testing is reportedly useful in terms of safety, efficacy and clinical benefit in the early days after AMI. 23,24 We have had patients who showed excessive elevation of BP or HR during exercise training as part of phase I cardiac rehabilitation, without other symptoms or signs related to myocardial ischemia.…”

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confidence: 99%

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Adaptation to Low-Intensity Exercise on a Cycle Ergometer by Patients With Acute Myocardial Infarction Undergoing Phase I Cardiac Rehabilitation

Matsunaga¹,

Masuda²,

Ogura³

et al. 2004

Circ J

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BackgroundThe adaptation of patients with acute myocardial infarction (AMI) to a phase I rehabilitation program has not been widely assessed. Methods and Results Forty-two male patients (62±8 years) with AMI were classified as exercise tolerant (group A, n=25) or excessive response (systolic blood pressure (SBP) increase >30 mmHg during exercise; group B, n=17). Hemodynamic parameters during exercise using a cycle-ergometer were monitored for the first 3 days. The power of low-and high-frequency components (LF: 0.05-0.2 Hz; HF: 0.2-1 Hz) was analyzed by heart rate variability. Anxiety status was assessed using the Spielberger's State-Trait Anxiety Inventory. Patients in group B were significantly older, had lower cardiac function and a longer hospitalization than group A (p<0.05, respectively). The excessive elevation of SBP on Day 1 decreased and became <30 mmHg on Day 3 in group B. The decreases in HF during exercise on Days 1 and 3 were significantly smaller in group B than in group A (p<0.05 and p<0.05, respectively). The LF/HF ratio on Day 1 was significantly higher in group B than in group A (p<0.05). In group B, the anxiety score before exercise was significantly higher than that at the time of discharge (p<0.05), whereas there was no change in group A. Conclusion Factors influencing a significant elevation of blood pressure during phase I rehabilitation are age, physical deconditioning, imbalance of autonomic nervous activity and anxiety. (Circ J 2004; 68: 938 -945)

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Adaptation to Low-Intensity Exercise on a Cycle Ergometer by Patients With Acute Myocardial Infarction Undergoing Phase I Cardiac Rehabilitation

Matsunaga¹,

Masuda²,

Ogura³

et al. 2004

Circ J

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“…Koyal et al [50] and Miles et al [38] found that test modality had no demonstrable effect on the relationship between exercise-induced decreases in plasma [HCO 3 -] and increases in the V E above and beyond that needed to support any given increment in V O 2 (i.e., "excess ventilation") during exercise above the AT/T vent ( Fig. 1.4).…”

Section: 32a Cardiovascular Hemodynamic Metabolic and Gas Exchangementioning

confidence: 97%

“…Hermansen and colleagues [21,22] were among the first to show that 1) heart rate (HR), blood [La -] and the respiratory exchange ratio (RER) are significantly higher, 2) SV and its surrogate measure, oxygen pulse [53,54], are significantly lower and 3) total peripheral resistance, mean arterial blood pressure and CO are not [26,38].…”

Section: 32a Cardiovascular Hemodynamic Metabolic and Gas Exchangementioning

confidence: 99%

Physiological and perceptual responses to incremental exercise testing in healthy men: effect of exercise test modality

Muscat

Kotrach

Wilkinson-Maitland

et al. 2015

Appl. Physiol. Nutr. Metab.

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In a randomized cross-over study of 15 healthy men aged 20–30 years, we compared physiological and perceptual responses during treadmill and cycle exercise test protocols matched for increments in work rate — the source of increased locomotor muscle metabolic and contractile demands. The rates of O2 consumption and CO2 production were higher at the peak of treadmill versus cycle testing (p ≤ 0.05). Nevertheless, work rate, minute ventilation, tidal volume (VT), breathing frequency (fR), inspiratory capacity (IC), inspiratory reserve volume (IRV), tidal esophageal (Pes,tidal) and transdiaphragmatic pressure swings (Pdi,tidal), peak expiratory gastric pressures (Pga,peak), the root mean square of the diaphragm electromyogram (EMGdi,rms) expressed as a percentage of maximum EMGdi,rms (EMGdi,rms%max), and dyspnea ratings were similar at the peak of treadmill versus cycle testing (p > 0.05). Ratings of leg discomfort were higher at the peak of cycle versus treadmill exercise (p ≤ 0.05), even though peak O2 consumption was lower during cycling. Oxygen consumption, CO2 production, minute ventilation, fR, Pes,tidal, Pdi,tidal and Pga,peak were higher (p ≤ 0.05), while VT, IC, IRV, EMGdi,rms%max, and ratings of dyspnea and leg discomfort were similar (p > 0.05) at all or most submaximal work rates during treadmill versus cycle exercise. Our findings highlight important differences (and similarities) in physiological and perceptual responses at maximal and submaximal work rates during incremental treadmill and cycle exercise testing protocols. The lack of effect of exercise test modality on peak work rate advocates for the use of this readily available parameter to optimize training intensity determination, regardless of exercise training mode.

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“…In previous studies, walking has been reported to induce lower heart rates during exercise (Hermansen et al, 1970;Hilloskorpi et al, 1999) and lower blood lactate concentration (Koyal et al, 1976;Miles et al, 1980) than cycling exercise does, at the same oxygen consumption during exercise. Therefore, metabolic response in nonexercising muscles during walking may be different from that during cycling exercise reported by previous studies (Murakami et al, 2000;Nagasawa, 2008a).…”

Section: Introductionmentioning

confidence: 92%

Effects of Walking for Health Promotion on Oxygen Consumption in Nonexercising Muscle

Nagasawa

Ichimura²,

Moriguchi

2009

Int. J. Sport Health Sci.

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Cardiovascular, metabolic, and ventilatory responses of women to equivalent cycle ergometer and treadmill exercise

Cited by 55 publications

References 0 publications

Adaptation to Low-Intensity Exercise on a Cycle Ergometer by Patients With Acute Myocardial Infarction Undergoing Phase I Cardiac Rehabilitation

Adaptation to Low-Intensity Exercise on a Cycle Ergometer by Patients With Acute Myocardial Infarction Undergoing Phase I Cardiac Rehabilitation

Physiological and perceptual responses to incremental exercise testing in healthy men: effect of exercise test modality

Effects of Walking for Health Promotion on Oxygen Consumption in Nonexercising Muscle

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