The Experts below are selected from a list of 738 Experts worldwide ranked by ideXlab platform
Nobuo Takeshima - One of the best experts on this subject based on the ideXlab platform.
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responses of heart rate and Vagus Tone to treadmill walking on land and in water in healthy older adults
Journal of Aging and Physical Activity, 2003Co-Authors: Tatsuhisa Takahashi, Akiyoshi Okada, Junichiro Hayano, Nobuo TakeshimaAbstract:To determine water immersion’s effect on heart rate (HR) and vagal Tone, the authors examined HR and high-frequency R-R-interval variability in 7 healthy older adults at rest and during treadmill walking, starting at 3.0 km/hr and increasing 0.5 km/hr every 3 min at a 5% grade to exhaustion. Participants performed the test on land and then immersed in water to the xiphoid. HR at rest did not differ between water and land. During walking at 3.0 km/min, HR was significantly lower in water than on land, whereas at 4.5 and 5.0 km/min it was significantly higher (each p < .05). Peak HR at exhaustion was not significantly different between water and land. High-frequency amplitudes at rest and during exercise in water were not significantly different from those on land. The results suggest that resting Vagus Tone and vagal changes in response to walking exercise in elderly adults are not greatly affected by water immersion.
Tatsuhisa Takahashi - One of the best experts on this subject based on the ideXlab platform.
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responses of heart rate and Vagus Tone to treadmill walking on land and in water in healthy older adults
Journal of Aging and Physical Activity, 2003Co-Authors: Tatsuhisa Takahashi, Akiyoshi Okada, Junichiro Hayano, Nobuo TakeshimaAbstract:To determine water immersion’s effect on heart rate (HR) and vagal Tone, the authors examined HR and high-frequency R-R-interval variability in 7 healthy older adults at rest and during treadmill walking, starting at 3.0 km/hr and increasing 0.5 km/hr every 3 min at a 5% grade to exhaustion. Participants performed the test on land and then immersed in water to the xiphoid. HR at rest did not differ between water and land. During walking at 3.0 km/min, HR was significantly lower in water than on land, whereas at 4.5 and 5.0 km/min it was significantly higher (each p < .05). Peak HR at exhaustion was not significantly different between water and land. High-frequency amplitudes at rest and during exercise in water were not significantly different from those on land. The results suggest that resting Vagus Tone and vagal changes in response to walking exercise in elderly adults are not greatly affected by water immersion.
Akiyoshi Okada - One of the best experts on this subject based on the ideXlab platform.
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responses of heart rate and Vagus Tone to treadmill walking on land and in water in healthy older adults
Journal of Aging and Physical Activity, 2003Co-Authors: Tatsuhisa Takahashi, Akiyoshi Okada, Junichiro Hayano, Nobuo TakeshimaAbstract:To determine water immersion’s effect on heart rate (HR) and vagal Tone, the authors examined HR and high-frequency R-R-interval variability in 7 healthy older adults at rest and during treadmill walking, starting at 3.0 km/hr and increasing 0.5 km/hr every 3 min at a 5% grade to exhaustion. Participants performed the test on land and then immersed in water to the xiphoid. HR at rest did not differ between water and land. During walking at 3.0 km/min, HR was significantly lower in water than on land, whereas at 4.5 and 5.0 km/min it was significantly higher (each p < .05). Peak HR at exhaustion was not significantly different between water and land. High-frequency amplitudes at rest and during exercise in water were not significantly different from those on land. The results suggest that resting Vagus Tone and vagal changes in response to walking exercise in elderly adults are not greatly affected by water immersion.
Junichiro Hayano - One of the best experts on this subject based on the ideXlab platform.
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responses of heart rate and Vagus Tone to treadmill walking on land and in water in healthy older adults
Journal of Aging and Physical Activity, 2003Co-Authors: Tatsuhisa Takahashi, Akiyoshi Okada, Junichiro Hayano, Nobuo TakeshimaAbstract:To determine water immersion’s effect on heart rate (HR) and vagal Tone, the authors examined HR and high-frequency R-R-interval variability in 7 healthy older adults at rest and during treadmill walking, starting at 3.0 km/hr and increasing 0.5 km/hr every 3 min at a 5% grade to exhaustion. Participants performed the test on land and then immersed in water to the xiphoid. HR at rest did not differ between water and land. During walking at 3.0 km/min, HR was significantly lower in water than on land, whereas at 4.5 and 5.0 km/min it was significantly higher (each p < .05). Peak HR at exhaustion was not significantly different between water and land. High-frequency amplitudes at rest and during exercise in water were not significantly different from those on land. The results suggest that resting Vagus Tone and vagal changes in response to walking exercise in elderly adults are not greatly affected by water immersion.
Zhang Di - One of the best experts on this subject based on the ideXlab platform.
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analysis of dynamic electrocardiogram and heart rate variability in patients with unexplained heart palpitation
Medical Journal of the Chinese People's Armed Police Forces, 2013Co-Authors: Zhang DiAbstract:Objective To study the pathogenesis of palpitation of unknown causes in patients with cardiac autonomic nervous function.Methods Forty-five patients with palpitations of unknown causes and 22 healty controls were examined for 24 hours of dynamic electrocardiogram parallel heart rate variability(HRV) analysis,comparison of palpitation group dynamic electrocardiogram almost normal with control group of 24 h normal R-R interval standard deviation(SDNN),each 5 min normal R-R interval mean standard deviation(SDANN),adjacent normal R-R interval difference of root mean square(RMSSD),SDNN100 cases,SDNN ratio and LF/HF ratio and other indicators.Results Unexplained palpitation group and control group showed no significant difference in mean heart rate.In palpitation group ventricular arrhythmia was detected in 8 patients(17.8%),which was single source of ventricular extrasystole,averaged(83.2 ±119.3) / h;sinus heartbeat bradycardia in 3 cases(6.7%);paroxysmal supraventricular tachycardia of heartbeat in 6 cases(13.3%);dynamic electrocardiogram was normal in 28 cases(62.2%).Dynamic electrocardiograms were normal in control group(100%).In palpitation group,in addition to sinus bradycardia heartbeat,the SDNN and SDANN were smaller than that in the control group(P0.05 or P0.01),but the RMSSD.In palpitation group,dynamic electrocardiogram normal with SDNN100 in 12 cases(42.9%),in the control group 0 case(0%),the difference was statistically significant(χ2=12.4060,P0.05).Compared with the control group,the SDNN circadian ratio and LF/HF ratio in palpitation group increased(t=4.280,6.788,P0.01).Conclusions In patients with palpitations of unknown causes,24 h dynamic electrocardiogram is in majority generally normal,but heart rate variability analysis results show that the cardiac autonomic function is damaged to varying degrees,mainly manifested as decrease in nocturnal Vagus Tone.
