Heart Rate and Plasma Catecholamines Responses to Exercise at Various Intensities

Fujii, Nobuharu; Nabekura, Yoshiharu; Gwon, Osung; Yamazaki, Fumio; Homma, Shunsaku; Ikegami, Haruo

doi:10.7600/jspfsm1949.41.313

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…It affects the cardiovascular system, producing a rapid powerful vasopressor effect, and increasing heart rate, the force of contraction, the respiratory rate, and blood flow towards the brain, heart and skeletal muscle [ 38 ]. It is known that adrenaline secretion correlates with exercise intensity [ 39 , 40 ]. The single exercise session in this study was high-intensity, requiring 70–80% of maximum heart rate, and it was considered that adrenaline increased, reflecting this level of exercise intensity.…”

Section: Discussionmentioning

confidence: 99%

Effects of Ingesting Food Containing Heat-Killed Lactococcus lactis Strain Plasma on Fatigue and Immune-Related Indices after High Training Load: A Randomized, Double-Blind, Placebo-Controlled, and Parallel-Group Study

et al. 2023

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Lactococcus lactis strain Plasma (LC-Plasma) is a unique lactic acid bacterium that activates plasmacytoid dendritic cells (pDCs). We evaluated the effect of LC-Plasma on fatigue indices and dendritic cells activity in athletes after 14 days’ continuous exercise load. Thirty-seven participants were divided into two groups and consumed placebo (PL) or LC-Plasma capsules (containing 100 billion cells) daily for 14 days. Maturation markers on dendritic cells, blood parameters, physiological indices, and fatigue-related indices were recorded on days 1 and 15 (before and after exercise). Cumulative days of symptoms relating to physical conditions were also recorded during the continuous exercise period. We observed that CD86 as a maturation marker on pDCs was significantly higher and that cumulative days of fatigue were significantly fewer in the LC-Plasma group than in the Placebo group on day 15. We also conducted 2 h ergometer exercise on day 15 to evaluate fatigue. The results showed that autonomic fatigue parameters (LF/HF) were significantly lower in the LC-Plasma group. These results suggest that LC-Plasma supplementation alleviates fatigue accumulation and increases pDC activity caused by a continuous high training load.

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Section: Discussionmentioning

confidence: 99%

Effects of Ingesting Food Containing Heat-Killed Lactococcus lactis Strain Plasma on Fatigue and Immune-Related Indices after High Training Load: A Randomized, Double-Blind, Placebo-Controlled, and Parallel-Group Study

et al. 2023

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“…The angiotensin II (ANG II) constricts arterioles by its direct effects, and raises vascular resistance indirectly through its actions on sympathetic nervous activity 13) . Previous studies have shown that NA and ANG II both begin to rise after incremental exercise, and a more rapid elevation in NA was shown after exercise intensity surpasses AT 8,[14][15][16][17] . In this study, lower NA and ANG II were observed during the supine position, which may be taken as a reflection of a lesser degree of activation of the sympathetic nervous system.…”

Section: Previous Studies Have Shown That Lower Maximalmentioning

confidence: 99%

Cardiopulmonary Response during Supine and Sitting Bicycle Exercises.

et al. 1995

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The effect of body position on cardiopulmonary response was assessed by the following protocols: 1) Cardiopulmonary exercise testing with a bicycle ergometer (20 W/min) was performed on nine healthy men (mean age; 19.9 years) in a sitting and a supine position. Oxygen uptake, heart rate and blood pressure were measured during the test. Noradrenaline and Angiotensin II were analyzed at rest and after exercise. 2) Single-level exercise testing at 100 W was performed. The cardiac index was computed from the cardiac output, which was measured using the dye-dilution technique at rest and during exercise. The results were as follows: 1) Anaerobic threshold was lower in the supine than in the sitting. 2) Noradrenaline and Angiotensin II were slightly lower in the supine than in the sitting. 3) The cardiac index at rest was slightly greater in the supine, and that during 100 W exercise was the same in both positions. It is concluded that the blood flow to active muscle during 100 W exercise is lower in the supine than in the sitting. The etiology of lower anaerobic threshold in the supine is thought to be due to lowered blood flow to active muscle.

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Effects of thiamine supplementation on exercise-induced fatigue

Suzuki

Itokawa

1996

Metab Brain Dis

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High-dose thiamine (vitamin B1) supplementation (100 mg/day) may be helpful in preventing or accelerating recovery from exercise-induced fatigue. Sixteen volunteer male athletes volunteer, 8 with a blood thiamine level of 40 ng/ml or more (normal thiamine group) and 8 with levels below that level (low thiamine group) were selected as subjects. They exercised on a bicycle ergometer and the effects of thiamine supplementation were compared with placebo. Blood thiamine level markedly increased following supplementation of thiamine for 3 days before exercise. Exercise-induced changes in hemodynamic parameters and cardiopulmonary function indicated the onset of fatigue. Thiamine supplementation significantly suppressed the increase in blood glucose in the normal thiamine group and significantly decreased the number of complaints shortly after exercise in the subjective fatigue assessment of 30 items.

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Heart Rate and Plasma Catecholamines Responses to Exercise at Various Intensities

Cited by 6 publications

References 33 publications

Effects of Ingesting Food Containing Heat-Killed Lactococcus lactis Strain Plasma on Fatigue and Immune-Related Indices after High Training Load: A Randomized, Double-Blind, Placebo-Controlled, and Parallel-Group Study

Effects of Ingesting Food Containing Heat-Killed Lactococcus lactis Strain Plasma on Fatigue and Immune-Related Indices after High Training Load: A Randomized, Double-Blind, Placebo-Controlled, and Parallel-Group Study

Cardiopulmonary Response during Supine and Sitting Bicycle Exercises.

Effects of thiamine supplementation on exercise-induced fatigue

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