scholarly journals Group Means and Inter-Individual Analysis in Post-exercise Hypotension: Effects of Citrulline Malate Oral Supplementation

Author(s):  
Leandro C. Brito
2020 ◽  
Vol 22 (4) ◽  
pp. 242-249
Author(s):  
Juliano Casonatto ◽  
Adeluci Moraes ◽  
Kamila Grandolfi

AbstractThe present study was designed to investigate whether citrulline malate (CM) supplementation might influence post-aerobic-exercise autonomic response in normotensive and hypertensive subjects. Forty individuals (20 normotensives and 20 hypertensives) were randomly assigned to one of the four experimental groups (normotensive-placebo [NP], normotensive-CM [NC], hypertensive-placebo [HP], and hypertensive-CM [HC]). The participants ingested CM (6 g) or placebo dissolved in water (100 ml) 120 min before the exercise session. The exercise session was conducted on a treadmill and consisted of 40 min of running/walking at 60-70% HRreserve. The heart rate variability (HRV) was recorded continuously for 60 min post-exercise. In normotensive subjects at “post-30”, LF increased and HF decreased after the CM supplementation (16% [P=0.041] and -32% [P=0.037], respectively). No significant differences were found in “pre”, “post-30” and “post-60” considering the pooled (NP, NC, HP, and HC) z-scores for time and frequency HRV domains. These results suggest that a single dose of CM supplementation does not promote significant effects on post-exercise autonomic modulation in normotensive and hypertensive subjects. Keywords: Autonomic Nervous System. Citrulline Malate. Hypertension. Exercise. ResumoO presente estudo foi desenvolvido para investigar se a suplementação de citrulina malato (CM) pode influenciar a resposta autonômica após exercício aeróbico em indivíduos normotensos e hipertensos. Quarenta indivíduos (20 normotensos e 20 hipertensos) foram aleatoriamente designados para um dos quatro grupos experimentais (normotenso-placebo [NP], normotenso-CM [NC], hipertenso-placebo [HP] e hipertenso-placebo [HP] e hipertenso-CM [HC]). Os participantes ingeriram CM (6 g) ou placebo dissolvido em água (100 ml) 120 minutos antes da sessão de exercícios. A sessão de exercícios foi realizada em esteira e consistiu em 40 minutos de corrida/caminhada a 60-70% da FCres. A variabilidade da frequência cardíaca (VFC) foi registrada continuamente por 60 minutos após o exercício. Nos normotensos “pós-30”, houve aumento para LF e redução para HF após a suplementação de CM (16% [P=0,041] e -32% [P=0,037], respectivamente). Não foram encontradas diferenças significativas nos momentos "pré", "pós-30" e "pós-60", considerando os escores-z combinados (NP, NC, HP e HC), tanto para os indicadores de domínio do tempo, quando para os de domínio da frequência. Estes resultados sugerem que uma dose única de suplementação de CM não promove efeitos significativos na modulação autonômica após exercício em indivíduos normotensos e hipertensos. Palavras-chave: Sistema Nervoso Autônomo. Citrulina Malato. Hipertensão, Exercício.


2019 ◽  
Vol 34 (4) ◽  
pp. 261.e1-261.e9
Author(s):  
J. Casonatto ◽  
J.V. Cavalari ◽  
K.F. Goessler ◽  
D.G.D. Christofaro ◽  
M.D. Polito ◽  
...  

2018 ◽  
Vol 31 (6) ◽  
pp. 509-521
Author(s):  
Kamila GRANDOLFI ◽  
João Vagner CAVALARI ◽  
Renata Cristina GÓES ◽  
Marcos Doederlein POLITO ◽  
Juliano CASONATTO

ABSTRACT Objective To investigate whether acute citrulline supplementation might influence post-exercise hypotension in normotensive and hypertensive individuals. Methods Following a randomized double-blind design, twenty normotensive (28±7 years, 74±17kg, 1.7±0.09m) and 20 hypertensive individuals (55±12 years, 76±15kg, 1.59±0.09m) were randomly assigned to one of the four experimental groups (Normotensive-Placebo; Normotensive-Citrulline; Hypertensive-Placebo; Hypertensive-Citrulline). The placebo groups ingested 6g of corn starch and the citrulline groups ingested 6g of citrulline dissolved in water. The participants performed 40 minutes of walking/running on a treadmill at 60-70% heart rate reserve. Blood pressure was measured immediately after a 60-min exercise session using an oscillometric device and 24-h ambulatory monitoring. Results The post-exercise hypotension was more pronounced in hypertensives and the Hypertensive-Citrulline group showed a consistent systolic blood pressure reduction during the laboratorial phase, which can be seen by looking at the mean of 60 minutes (-15.01mmHg vs -3.14mmHg [P=0.005]; -4.16mmHg [P=0.009]; -6.30mmHg [P=0.033] in comparison with the Normotensive-Placebo, Normotensive-Citrulline, and Hypertensive-Placebo groups, respectively). During ambulatory blood pressure monitoring, the Hypertensive-Citrulline group showed a significant reduction in systolic blood pressure (-21.05mmHg) in the awake period compared with the Normotensive-Citrulline group (-3.17mmHg [P=0.010]). Conclusion Acute citrulline oral supplementation can induce greater post-exercise hypotension response in hypertensive than normotensive individuals.


Author(s):  
Juliano Casonatto ◽  
Renata Cristina Góes ◽  
Kamila Grandolfi ◽  
João Vagner Cavalari

Background: L-citrulline malate supplementation promotes an increase in oxide nitric metabolites, which are considered important mediators of peripheral vasodilation. Thus, the supplementation with this substance might maximize the duration and magnitude of post-exercise hypotension. Objectives: To investigate the hypotensive effect of L-citrulline malate supplementation following a single session of aerobic exercise in normotensives. Methods: Forty adults, normotensives, sedentary, were randomly assigned to one of the four experimental groups (control-placebo, control-Lcitrulline, exercise-placebo and exercise-Lcitrulline). All participants ingested a sachet with placebo or L-citrulline with malate (6 grams), both dissolved in water and the ingestion was made 120 minutes before starting the experimental session. The subjects performed 40 minutes of walk/run at 60-70% of reserve heart rate. For the control session, they remained seated in rest during 40 minutes. The blood pressure was taken in rest and every 10 minutes until complete 60 minutes after the experimental session. The ambulatory blood pressure device take the readings every 20 minutes (awake time) and each 30 minutes (sleep time) over the course of 24 hours. Results: L-citrulline malate supplementation associated to aerobic exercise promoted significantly reductions on systolic blood pressure when compared with control-placebo at 20 min (net change[NC]: 9.7 mmHg [P=0.010]), 40 min (NC: 12.7 mmHg [P=0.010]), 50 min (NC: 12.1 mmHg [P=0.012]), 60 min (NC: 9.0 mmHg [P=0.050]) and overall mean (NC: 7.8 mmHg [P=0.018]) post exercise. Conclusion: Acute L-citrulline malate supplementation might potentiate the post-exercise hypotension effects in normotensive subjects.


2016 ◽  
Vol 34 (Supplement 1) ◽  
pp. e477
Author(s):  
Jae Hyoung Park ◽  
Jae-Young Cho ◽  
Seunghun Lee ◽  
Hyung Joon Joo ◽  
Soon Jun Hong ◽  
...  

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