Tolerance of Upper Extremity Pneumatic Tourniquets and their Effect on Grip Strength

2008 ◽  
Vol 33 (3) ◽  
pp. 266-271 ◽  
Author(s):  
G. PRODHOMME ◽  
D. MOURAUX ◽  
P. -M. DUGAILLY ◽  
C. CHANTELOT ◽  
C. FONTAINE ◽  
...  

This study was undertaken to evaluate tourniquet tolerance in healthy people. An arm tourniquet was inflated to 100 mmHg above systolic blood pressure for 21 minutes. We measured pain and grip strength before, during and at various times after deflation. We tested 40 subjects (20 women and 20 men) with an average age of 38 (range 22–58) years. Eight individuals did not tolerate the tourniquet for this length of time and the test was stopped. Visual analogical scale had a globally linear increase during tourniquet application. We noted a sensation of well-being just after deflation, quickly replaced by pain in the tested limb due to limb reperfusion. We also noted a significant loss of strength in the tested limb, which completely recovered by 48 hours. We also observed a significant loss of strength in the contralateral hand, which also recovered by 48 hours. The possible reasons for these temporary losses of strength in both the ipsilateral and contralateral limbs are discussed.

2010 ◽  
Vol 24 (3) ◽  
pp. 149-160 ◽  
Author(s):  
Dmitry M. Davydov ◽  
David Shapiro ◽  
Iris B. Goldstein

Objectives: Previous research suggests that mechanisms related to afferent and efferent components of the baroreflex are associated with blood pressure level and mood, and that mood as a component of subjective well-being may be mediated by changes in blood pressure. This study examines these mechanisms in 213 healthy women and men. Methods: Evaluation of spontaneous baroreflex activity using the sequence technique under resting conditions in the laboratory was followed by 2 days of 24-h ambulatory blood pressure recording and diary ratings of mood. Results: Patterns of components of the baroreflex loop were significant predictors of 24-h ambulatory blood pressure mean level, its circadian variability, and daily ratings of mood. Three mechanisms were found to be involved in the regulation: (1) interaction between gains of afferent and efferent cardiac components of the baroreflex, (2) gain of afferent signals related to fast cardiac responses to baroreceptor activation, and (3) gain of afferent signals related to late cardiac responses to baroreceptor inhibition. The interaction of afferent/efferent components of baroreflex loop appears to independently determine mean levels of systolic blood pressure and positive (happy) mood. The effect of the baroreceptor activation mechanism on subjective well-being (indexed by happy and alert moods) was mediated by the wake/sleep systolic blood pressure difference. Additionally, the baroreceptor inhibitory mechanism effect on subjective well-being (indexed by stressed and sleepy moods) was mediated by the wake/sleep diastolic blood pressure difference. Conclusions: Evaluation of the baroreflex components and their interaction provides important information about blood pressure and mood beyond that provided by baroreflex sensitivity and potential for the evaluation of risk for hypertension and mood disturbance in healthy people.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Auwal Abdullahi ◽  
Amina Shuaib Bala ◽  
Sani Musa Danazumi ◽  
Saadatu Maiwada Abubakar ◽  
Rislanu Isyaku Adamu ◽  
...  

Abstract Background Pregnancy results in many changes, including reduced hand grip strength (HGS). However, good HGS is required for physical functions such as carrying and breastfeeding the baby after birth. The aim of this study was to determine the factors that may predict HGS during pregnancy. Methods The study was a cross-sectional study approved by the Research Ethics Committees of Kano State Ministry of Health and Aminu Kano Teaching Hospital in Kano, north-west, Nigeria. Pregnant women at the designated hospitals were included in the study if they had no serious comorbidities or any known neurological condition that affects the hands and the neck. Demographic characteristics and independent (predictor) variables (age, weight, height, BMI, maternity leave status, number of full-term deliveries, number of preterm deliveries, number of live births, number of abortuses, gravidity, trimester, systolic blood pressure, diastolic blood pressure, inter arm systolic BP difference [IASBP], inter arm diastolic BP difference [IADBP], and heart rate) of each of the participants were recorded by experienced therapists. The data were analysed using descriptive statistics, t-test, Pearson correlation coefficient and standard multiple regression. Result One hundred and sixty-one pregnant women with mean age, 25.04 ± 4.83 years participated in the study. In the dominant hand, 120 participants (74.5%) had weak grip strength. In the non-dominant hand, 135 participants (83.9%) had weak grip strength. For the dominant hand, the total variance explained by the whole model was significant, 28.5%, F(11, 161) = 1.187, R2 = 0.081, p = 0.300 . In the final model, none of the variables significantly predicted HGS. However, systolic blood pressure contributed to the model more than any other variable (Beta = -0.155). For the non-dominant hand, the total variance explained by the whole model was not significant, 33.1%, F(11, 161) = 1.675, R2 = 0.111, p = 0.089 . In the final model, only systolic blood pressure (Beta = -0.254, p = 0.023) significantly predicted hand grip strength. Conclusion Cardiovascular events or changes during pregnancy (such as change in systolic blood pressure) may be related to HGS in pregnant women. It is therefore, important for clinicians to pay attention to this, in planning rehabilitation strategies for pregnant women.


2013 ◽  
Vol 7 (3-4) ◽  
pp. 146
Author(s):  
D.S. Picone ◽  
R.E.D. Climie ◽  
K.D.K. Ahuja ◽  
M.A. Keske ◽  
J.E. Sharman

2009 ◽  
Vol 32 (11) ◽  
pp. 627-632 ◽  
Author(s):  
Yan Gong ◽  
Eileen M. Handberg ◽  
Tobias Gerhard ◽  
Rhonda M. Cooper-DeHoff ◽  
L. Douglas Ried ◽  
...  

2009 ◽  
Vol 73 (1) ◽  
pp. 174-178 ◽  
Author(s):  
Kunio Yufu ◽  
Naohiko Takahashi ◽  
Norihiro Okada ◽  
Tetsuji Shinohara ◽  
Masahide Hara ◽  
...  

1995 ◽  
Vol 7 (4) ◽  
pp. 364-378 ◽  
Author(s):  
Kathleen F. Janz ◽  
Larry T. Mahoney

To assess the relationship of changes in physical fitness and body composition to heart growth and rising blood pressure (BP) during early puberty, fat-free mass (FFM), body fatness (% fat), physical fitness (peak VO2, peak mechanical power, peak O2 pulse, peak systolic blood pressure [SBP], and grip strength), Tanner stage, resting BP, and echocardiographic left ventricular mass (LVM) were measured in 123 children (age M = 10 years) and remeasured 2 years later. Increased FFM, increased grip strength, and increased peak power explained 28% of the variability in heart growth. Increased FFM, increased % fat, and decreased peak O2 pulse explained 23% of the variability in rising SBP. During puberty, physical fitness is an independent predictor of changing heart size and systolic blood pressure. Results suggest that improvements in physical fitness and decreases in body fatness may have beneficial effects on children’s blood pressure.


1993 ◽  
Vol 84 (3) ◽  
pp. 331-337 ◽  
Author(s):  
E. J. Bassey ◽  
U. J. Harries

1. The maximal grip strength of the hand has been measured in a random sample of 359 men and 561 women aged over 65 years living in their own homes. The response rate was 80% from a representative demographic area of the U.K. Measurements were made of body mass, skeletal size (demispan) and grip strength. Grip strength was measured using a custom-built strain-gauged dynamometer. The best of three attempts was taken as definitive. A structured questionnaire was used to obtain information about customary activity, use of handgrip muscles, health and psychological well-being. This was repeated with 620 survivors 4 years later. 2. The results for strength were normally distributed. The right hand was 10% stronger than the left and men had twice the strength of women. Strength was significantly related to skeletal size and in men to body mass. The gender difference was only partly accounted for by skeletal size and women were substantially disadvantaged in terms of their strength/body mass ratio. 3. There was a significant decline in strength with age of 2%/year for men and women. Strength was also significantly related to customary activity, reported use of the hands and psychological and physical health. 4. After 4 years 620 survivors were re-measured. Grip strength had declined by 12% in men and 19% in women and these losses were significantly related to age. A significant decline was also found in reported use, customary activity and health scores, and in women in body mass and psychological health. The loss of strength was significantly related to the decline in reported use of the hands but not to the other losses. 5. It is concluded that loss of strength over time in old age may be seriously underestimated by cross-sectional studies, especially in women; and that the loss is consistently and predominantly related to lack of use, rather than loss of health.


Sign in / Sign up

Export Citation Format

Share Document