Cardiorespiratory Responses to Walking in Water

2015 ◽  
pp. 35-41 ◽  
Author(s):  
Eunei Yu ◽  
Kaoru Kitagawa ◽  
Yoshiteru Mutoh ◽  
Mitsumasa Miyashita
Keyword(s):  
Cardiorespiratory Responses

scholarly journals Cardiorespiratory Responses to 10 Weeks of Exoskeleton-Assisted Overground Walking Training inChronic Nonambulatory Patients with Spinal Cord Injury

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5022
Author(s):  
Jae Hyeon Park ◽  
Hyeon Seong Kim ◽  
Seong Ho Jang ◽  
Dong Jin Hyun ◽  
Sang In Park ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Oxygen Consumption ◽  
Exercise Intensity ◽  
Moderate Physical Activity ◽  
Intensity Level ◽  
Cardiorespiratory System ◽  
Cardiorespiratory Responses ◽  
Cord Injury ◽  
Walking Efficiency

Exercise intensity of exoskeleton-assisted walking in patients with spinal cord injury (SCI) has been reported as moderate. However, the cardiorespiratory responses to long-term exoskeleton-assisted walking have not been sufficiently investigated. We investigated the cardiorespiratory responses to 10 weeks of exoskeleton-assisted walking training in patients with SCI. Chronic nonambulatory patients with SCI were recruited from an outpatient clinic. Walking training with an exoskeleton was conducted three times per week for 10 weeks. Oxygen consumption and heart rate (HR) were measured during a 6-min walking test at pre-, mid-, and post-training. Exercise intensity was determined according to the metabolic equivalent of tasks (METs) for SCI and HR relative to the HR reserve (%HRR). Walking efficiency was calculated as oxygen consumption divided by walking speed. The exercise intensity according to the METs (both peak and average) corresponded to moderate physical activity and did not change after training. The %HRR demonstrated a moderate (peak %HRR) and light (average %HRR) exercise intensity level, and the average %HRR significantly decreased at post-training compared with mid-training (31.6 ± 8.9% to 24.3 ± 7.3%, p = 0.013). Walking efficiency progressively improved after training. Walking with an exoskeleton for 10 weeks may affect the cardiorespiratory system in chronic patients with SCI.

scholarly journals The Effects of Simultaneous Upper and Lower Body Cycling on Cardiorespiratory Responses.

2019 ◽  
Vol 51 (Supplement) ◽  
pp. 994
Author(s):  
Jessica Royen ◽  
Brandi N. Guillotte ◽  
Kierstin Marshall ◽  
Kimberly Billiot ◽  
Robert R. Kraemer
Keyword(s):  
Lower Body ◽  
Cardiorespiratory Responses

570 CARDIORESPIRATORY RESPONSES TO VARIOUS BODY POSITIONS IN COMPETITIVE IN-LINE SKATERS

1994 ◽  
Vol 26 (Supplement) ◽  
pp. S101
Author(s):  
F. J. Fedel ◽  
C. A. Brawner ◽  
C. R.C. Marks ◽  
T. Kataoka ◽  
M. J. Hakim ◽  
...  
Keyword(s):  
Cardiorespiratory Responses

Cardiorespiratory responses to exercise distributed between the upper and lower body

1983 ◽  
Vol 54 (5) ◽  
pp. 1403-1407 ◽  
Author(s):  
M. M. Toner ◽  
M. N. Sawka ◽  
L. Levine ◽  
K. B. Pandolf
Keyword(s):  
Respiratory Exchange Ratio ◽  
Venous Return ◽  
Minute Ventilation ◽  
Peripheral Resistance ◽  
Upper Body ◽  
Lower Body ◽  
Upper Body Exercise ◽  
Cardiorespiratory Responses ◽  
Muscle Groups ◽  
Constant Power Output

The present study examined the influence that distributing exercise between upper (arm crank exercise) and lower (cycle exercise) body muscle groups had on cardiorespiratory responses to constant power output (PO) exercise. Six male volunteers completed five submaximal exercise bouts of 7-min duration at both 76 and 109 W. The arm PO/total PO (% arm) for these bouts was approximately 0, 20, 40, 60, and 100%. At 76 W, O2 uptake (VO2) did not change (P greater than 0.05) from 0 to approximately 20% arm (approximately 1.30 1 x min-1) but increased with increasing percent arm values up to 100% (1.58 1 x min-1). At 109 W, VO2 increased throughout the range of 0 (1.70 1 x min-1) to 100% arm (2.33 1 x min-1). In general, minute ventilation (VE) and respiratory exchange ratio (R) increased with increased percent arm values at 76 and 109 W. The heart rate (HR) responses remained unchanged from 0 to 60% arm at both 76 and 109 W; however, between 60 and 100% arm, a 26-beats x min-1 increase was observed at 76 W (143 beats x min-1 at 100% arm) and a 45-beats x min-1 increase at 109 W (174 beats x min-1 at 100% arm). These data suggested that during upper body exercise, the increased VO2 associated with increased percent arm values was not accompanied by an elevated HR response when at least 40% of the PO was performed by the lower body. This might be attributed to a facilitated venous return and/or a decreased total peripheral resistance when the lower body was involved in the exercise.

The relative roles of external and internal CO2versusH+ in eliciting the cardiorespiratory responses ofSalmo salarandSqualus acanthiasto hypercarbia

2001 ◽  
Vol 204 (22) ◽  
pp. 3963-3971 ◽  
Author(s):  
S. F. Perry ◽  
J. E. McKendry
Keyword(s):  
Cardiac Output ◽  
Sea Water ◽  
Buccal Cavity ◽  
Respiratory Acidosis ◽  
Systemic Resistance ◽  
Measured Variable ◽  
Cardiorespiratory Responses ◽  
Arterial Blood ◽  
Water Ph ◽  
Stimulation Of

SUMMARYFish breathing hypercarbic water encounter externally elevated PCO2 and proton levels ([H+]) and experience an associated internal respiratory acidosis, an elevation of blood PCO2 and [H+]. The objective of the present study was to assess the potential relative contributions of CO2versus H+ in promoting the cardiorespiratory responses of dogfish (Squalus acanthias) and Atlantic salmon (Salmo salar) to hypercarbia and to evaluate the relative contributions of externally versus internally oriented receptors in dogfish.In dogfish, the preferential stimulation of externally oriented branchial chemoreceptors using bolus injections (50 ml kg–1) of CO2-enriched (4 % CO2) sea water into the buccal cavity caused marked cardiorespiratory responses including bradycardia (–4.1±0.9 min–1), a reduction in cardiac output (–3.2±0.6 ml min–1 kg–1), an increase in systemic vascular resistance (+0.3±0.2 mmHg ml min–1 kg–1), arterial hypotension (–1.6±0.2 mmHg) and an increase in breathing amplitude (+0.3±0.09 mmHg) (means ± s.e.m., N=9–11). Similar injections of CO2-free sea water acidified to the corresponding pH of the hypercarbic water (pH 6.3) did not significantly affect any of the measured cardiorespiratory variables (when compared with control injections). To preferentially stimulate putative internal CO2/H+ chemoreceptors, hypercarbic saline (4 % CO2) was injected (2 ml kg–1) into the caudal vein. Apart from an increase in arterial blood pressure caused by volume loading, internally injected CO2 was without effect on any measured variable.In salmon, injection of hypercarbic water into the buccal cavity caused a bradycardia (–13.9±3.8 min–1), a decrease in cardiac output (–5.3±1.2 ml min–1 kg–1), an increase in systemic resistance (0.33±0.08 mmHg ml min–1 kg–1) and increases in breathing frequency (9.7±2.2 min–1) and amplitude (1.2±0.2 mmHg) (means ± s.e.m., N=8–12). Apart from a small increase in breathing amplitude (0.4±0.1 mmHg), these cardiorespiratory responses were not observed after injection of acidified water.These results demonstrate that, in dogfish and salmon, the external chemoreceptors linked to the initiation of cardiorespiratory responses during hypercarbia are predominantly stimulated by the increase in water PCO2 rather than by the accompanying decrease in water pH. Furthermore, in dogfish, the cardiorespiratory responses to hypercarbia are probably exclusively derived from the stimulation of external CO2 chemoreceptors, with no apparent contribution from internally oriented receptors.

Cardiorespiratory Responses to Downhill Versus Uphill Running in Endurance Athletes

2018 ◽  
Vol 89 (4) ◽  
pp. 511-517 ◽  
Author(s):  
Marcel Lemire ◽  
Evelyne Lonsdorfer-Wolf ◽  
Marie-Eve Isner-Horobeti ◽  
Blah Y. L. Kouassi ◽  
Bernard Geny ◽  
...  
Keyword(s):  
Endurance Athletes ◽  
Cardiorespiratory Responses

Cardiorespiratory Responses of Young Overweight Women to Ergometry Following Modest Weight Reduction

1973 ◽  
Vol 27 (2) ◽  
pp. 61-64 ◽  
Author(s):  
James Kollias ◽  
J. S. Skinner ◽  
H. L. Barlett ◽  
B. S. Bergsteinova ◽  
E. R. Buskirk
Keyword(s):  
Weight Reduction ◽  
Overweight Women ◽  
Cardiorespiratory Responses
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