INVESTIGATION OF FEMALE TOLERANCE OF THE HEAD-TO-FOOT G-LOADS ON A SHORT-ARM CENTRIFUGE BEFORE AND AFTER 8-DAY ISOLATION

2021 ◽  
Vol 55 (2) ◽  
pp. 56-62
Author(s):  
M.I. Koloteva ◽  
◽  
T.M. Glebova ◽  
A.V. Salnikov ◽  
◽  
...  

The main purpose of the pioneered Russian study was to compare tolerance of head-to-foot g-loads (+Gz) by female and male subjects rotated on a short-arm centrifuge before and after 8-d isolation using the subjective and objective data. Results of the investigation demonstrated compatibility of g-tolerance by men and women. However, during the runs before isolation heart rate in female subjects grew significantly in comparison to the male subjects. Though higher in women, dynamics of blood pressure measured at the earlobe and arm was not statistically different from the male data.

2009 ◽  
Vol 23 (2) ◽  
pp. 77-84 ◽  
Author(s):  
Matthew C. Whited ◽  
Kevin T. Larkin

Sex differences in cardiovascular reactivity to stress are well documented, with some studies showing women having greater heart rate responses than men, and men having greater blood pressure responses than women, while other studies show conflicting evidence. Few studies have attended to the gender relevance of tasks employed in these studies. This study investigated cardiovascular reactivity to two interpersonal stressors consistent with different gender roles to determine whether response differences exist between men and women. A total of 26 men and 31 women were assigned to either a traditional male-oriented task that involved interpersonal conflict (Conflict Task) or a traditional female-oriented task that involved comforting another person (Comfort Task). Results demonstrated that women exhibited greater heart rate reactions than men independent of the task type, and that men did not display a higher reactivity than women on any measure. These findings indicate that sex of participant was more important than gender relevance of the task in eliciting sex differences in cardiovascular responding.


Author(s):  
Niken Setyaningrum ◽  
Andri Setyorini ◽  
Fachruddin Tri Fitrianta

ABSTRACTBackground: Hypertension is one of the most common diseases, because this disease is suffered byboth men and women, as well as adults and young people. Treatment of hypertension does not onlyrely on medications from the doctor or regulate diet alone, but it is also important to make our bodyalways relaxed. Laughter can help to control blood pressure by reducing endocrine stress andcreating a relaxed condition to deal with relaxation.Objective: The general objective of the study was to determine the effect of laughter therapy ondecreasing elderly blood pressure in UPT Panti Wredha Budhi Dharma Yogyakarta.Methods: The design used in this study is a pre-experimental design study with one group pre-posttestresearch design where there is no control group (comparison). The population in this study wereelderly aged over> 60 years at 55 UPT Panti Wredha Budhi Dharma Yogyakarta. The method oftaking in this study uses total sampling. The sample in this study were 55 elderly. Data analysis wasused to determine the difference in blood pressure before and after laughing therapy with a ratio datascale that was using Pairs T-TestResult: There is an effect of laughing therapy on blood pressure in the elderly at UPT Panti WredhaBudhi Dharma Yogyakarta marked with a significant value of 0.000 (P <0.05)


2020 ◽  
Vol 29 (1) ◽  
pp. 71-81
Author(s):  
Rita Suhadi ◽  
Phebe Hendra ◽  
Dita Maria Virginia ◽  
Christianus Heru Setiawan

BACKGROUND Modernization negatively changes lifestyle, characterized by excessive eating and reduced energy consumption, and concurrently increases the cardiometabolic risk. This study was aimed to evaluate the association between eating behavior and cardio-metabolic risk factors including body mass index (BMI) in percentile, blood pressure (BP) in percentile, waist circumference, and heart rate in total subjects and gender sub-groups. METHODS This analytical cross-sectional study was done from July to November 2018. High schools in four provinces of Indonesia and students were selected using purposive sampling. Subjects’ profiles were collected from interview and cardio-metabolic parameters were measured at the study sites. Data were analyzed with chi-square and independent t-test. RESULTS Subjects who were overweight/obese and had high BP accounted for 27.1% and 9.3–12.0% of the total subjects (n = 768), respectively. Subjects who having breakfast tended to have lower BMI (p = 0.006), and the lower consumption of western meals had lower heart rate (p = 0.02). Male subjects had more meal frequency and had less quantity of snacks than female subjects (p<0.001). Male subjects with routine intake of vegetables had low heart rate (p = 0.03). Female subjects with routine breakfast had better BMI (p<0.001), and lower diastolic BP (p = 0.004) and waist circumference (p = 0.02), whereas those who consumed Western meals had higher heart rate (p = 0.046) and waist circumference (p = 0.001). CONCLUSIONS Eating behaviors are likely to affect cardio-metabolic risk factors, and the effects vary within gender groups.


1961 ◽  
Vol 201 (1) ◽  
pp. 109-111 ◽  
Author(s):  
Noel M. Bass ◽  
Vincent V. Glaviano

Heart rate, mean blood pressure, adrenal blood flow, and adrenal plasma adrenaline and noradrenaline were compared before and after ligation of the anterior descending coronary artery in dogs anesthetized with chloralose. One group of 12 dogs responded to acute coronary occlusion with a sudden and marked decrease in mean blood pressure (mean, 31%) and heart rate (mean, 18%) followed by an early onset (mean, 227 sec) of ventricular fibrillation. Another group of nine dogs responded with slight decreases in mean blood pressure (mean, 13%) and heart rate (mean, 5%), during which time ventricular fibrillation occurred late (mean, 30 min) or not at all. While the two groups were statistically different in mean blood pressure and heart rate, the minute output of adrenal catecholamines in either group was not found to be related to the early or late occurrence of ventricular fibrillation.


1994 ◽  
Vol 79 (3) ◽  
pp. 1391-1397 ◽  
Author(s):  
Sherman D. Vanderark ◽  
Daniel Ely

Physiological responses associated with the ratings of musical stimuli were investigated. For 101 university music and biology students in the experimental group, heart rate, blood pressure, and finger temperature were measured before and after listening to about 10 min. of music (Venus and Jupiter from Holst's The Planets) in an anechoic chamber. They also served as their own controls by sitting in silence for about 10 min. No significant differences were found on the three measures for the two musical stimuli between the musical or control conditions or between the two majors.


2014 ◽  
Vol 37 (8) ◽  
pp. 779-784 ◽  
Author(s):  
Hiromi Mori ◽  
Isao Saito ◽  
Eri Eguchi ◽  
Koutatsu Maruyama ◽  
Tadahiro Kato ◽  
...  

Author(s):  
Arundhati Goley ◽  
A. Mooventhan ◽  
NK. Manjunath

Abstract Background Hydrotherapeutic applications to the head and spine have shown to improve cardiovascular and autonomic functions. There is lack of study reporting the effect of either neutral spinal bath (NSB) or neutral spinal spray (NSS). Hence, the present study was conducted to evaluate and compare the effects of both NSB and NSS in healthy volunteers. Methods Thirty healthy subjects were recruited and randomized into either neutral spinal bath group (NSBG) or neutral spinal spray group (NSSG). A single session of NSB, NSS was given for 15 min to the NSBG and NSSG, respectively. Assessments were taken before and after the interventions. Results Results of this study showed a significant reduction in low-frequency (LF) to high-frequency (HF) (LF/HF) ratio of heart rate variability (HRV) spectrum in NSBG compared with NSSG (p=0.026). Within-group analysis of both NSBG and NSSG showed a significant increase in the mean of the intervals between adjacent QRS complexes or the instantaneous heart rate (HR) (RRI) (p=0.002; p=0.009, respectively), along with a significant reduction in HR (p=0.002; p=0.004, respectively). But, a significant reduction in systolic blood pressure (SBP) (p=0.037) and pulse pressure (PP) (p=0.017) was observed in NSSG, while a significant reduction in diastolic blood pressure (DBP) (p=0.008), mean arterial blood pressure (MAP) (p=0.008) and LF/HF ratio (p=0.041) was observed in NSBG. Conclusion Results of the study suggest that 15 min of both NSB and NSS might be effective in reducing HR and improving HRV. However, NSS is particularly effective in reducing SBP and PP, while NSB is particularly effective in reducing DBP and MAP along with improving sympathovagal balance in healthy volunteers.


2017 ◽  
Vol 23 (5) ◽  
pp. 380-384
Author(s):  
Márcio Rabelo Mota ◽  
Sandro Nobre Chaves ◽  
Maurílio Tiradentes Dutra ◽  
Ricardo Jacó de Oliveira ◽  
Renata Aparecida Elias Dantas ◽  
...  

ABSTRACT Introduction: Pre-prandial exercise promotes greater mobilization of fat metabolism due to the increased release of catecholamines, cortisol, and glucagon. However, this response affects how the cardiovascular system responds to exercise. Objective: To evaluate the response of systolic, diastolic, and mean blood pressure, heart rate (HR) and rate-pressure product (RPP) to pre- and postprandial exercise. Methods: Ten physically active male subjects (25.50 ± 2.22 years) underwent two treadmill protocols (pre- and postprandial) performed for 36 minutes at 65% of VO2max on different days. On both days, subjects attended the laboratory on a 10-hour fasting state. For the postprandial session, volunteers ingested a pre-exercise meal of 349.17 kcal containing 59.3 g of carbohydrates (76.73%), 9.97 g of protein (12.90%), and 8.01 g of lipids (10.37%). Blood pressure, HR and RPP were measured before and after exercise. The 2x2 factorial Anova with the multiple comparisons test of Bonferroni was applied to analyze cardiovascular variables in both moments (pre- vs. postprandial). The significance level was set at p<0.05. Results: Systolic (121.70 ± 7.80 vs. 139.78 ± 12.91 mmHg) and diastolic blood pressure (66.40 ± 9.81 vs. 80.22 ± 8.68 mmHg) increased significantly after exercise only in the postprandial session (p<0.05). HR increased significantly (p<0.05) after both protocols (64.20 ± 15.87 vs. 141.20 ± 10.33 bpm pre-prandial and 63.60 ± 8.82 vs. 139.20 ± 10.82 bpm postprandial). RPP had a similar result (8052.10 ± 1790.68 vs. 18382.60 ± 2341.66 mmHg.bpm in the pre-prandial session and 7772.60 ± 1413.76 vs. 19564.60 ± 3128.99 mmHg.bpm in the postprandial session). Conclusion: These data suggest that fasted exercise does not significantly alter the blood pressure. Furthermore, the meal provided before the postprandial exercise may promote a greater blood pressure responsiveness during exercise.


2020 ◽  
Vol 9 (8) ◽  
pp. e316985536
Author(s):  
Jaqueline Oliveira Barreto ◽  
Julliana Cariry Palhano Freire ◽  
Arthur Willian de Lima Brasil ◽  
Cristian Statkievicz ◽  
Francisley Ávila Souza ◽  
...  

Objective: To assess dental anxiety in patients undergoing oral surgery, as well as its impact on blood pressure and heart rate. Material and Methods: A total of 233 patients answered a socio-demographic questionnaire and another one based on the Corah dental anxiety scale. Blood pressure and heart rate were assessed at three moments while: patients were in the waiting room, immediately before and after the procedure. Results: This study revealed a prevalence of anxiety of 77.3%. There was a statistically significant difference in mean systolic blood pressure and heart rate at the three moments of the evaluation. Anxiety was prevalent in the sample and was observed from the time in the waiting room until the time when local anesthesia was performed, causing variations in systolic blood pressure and heart rate, anxiety levels decreased after the end of the service. In conclusion, we observed that oral surgery is directly related to increased anxiety, and anxiety is mainly related to the change in heart rate.


2018 ◽  
Vol 1 (4) ◽  
Author(s):  
Xianfeng Hua

Objective To investigate the effects of Shaolin Ba Duan Jin on patients with hypertension. Methods In the hypertensive patients detected in the national physical fitness test of public officials in Guiyang City, 40 patients with hypertension were selected. The experiment was started after Shaolin Ba Duan Jin has been practiced for seven days and the subjects had learned it. Experimental method: Frequency of subjects practicing Ba Duan Jin is 7 days a week, subjects practice once a day, practicing time is 6:00-7:30 am or 18:00 -19:30 pm, practicing lasts 1.5 hours each time (practicing has 3 groups, 14 minutes in each group;subjects rest 2 minutes between groups,;preparing part is 8 minutes;ending part is 5 minutes), record the blood pressure of the subjects before and after each experiment, and fill in the quality of life scale (WHOQOL-BREF scale) regularly for a period of 12 weeks. Questionnaire method: Fill in the quality of life scale every three weeks and measure heart rate and blood pressure before and after each exercise. Mathematical statistics: The paired sample t test was used to analyze the changes in blood pressure before and after the 12-week experiment. Results 1) The systolic and diastolic blood pressures of the subjects were significantly lower than before the experiment (P <0.01). 2) The WHOQOL-BREF scale after 12 weeks has improved significantly in all areas than before the experiment. Conclusions 1) Martial arts Ba Duan Jin has a good influence on the circulatory system of hypertensive patients. The performance is that the heart rate is slow and the systolic and diastolic blood pressures have a downward trend. 2) Martial arts Ba Duan Jin has significant improvement in the physiology, psychology, social relations, environment and other fields .


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