scholarly journals Influence of Passive Foot Flection Movements Applied after Exertion Isometric Workouts on Muscular Blood Flow

2018 ◽  
Vol 3 (90) ◽  
Author(s):  
Albinas Grūnovas ◽  
Jonas Poderys ◽  
Eugenijus Trinkūnas ◽  
Viktoras Šilinskas
Keyword(s):  
Blood Flow ◽  
Muscle Blood Flow ◽  
Venous Occlusion ◽  
Arterial Blood Flow ◽  
Adult Males ◽  
Maximal Increase ◽  
Vascular Reserve ◽  
Arterial Blood ◽  
Flow Intensity ◽  
Blood Flow Intensity

Research  background  and  hypothesis.  Blood  flow  intensity  plays  an  important  role  in  the  recovery  after exercising. Research aim was to compare the effect of passive rest and passive foot movement on calf muscle blood flow applying dosed static physical loads. Research methods. Eighteen adult males were divided into two sub-groups. Participants of the study performed two isometric 30-s workouts at 75% of MVC with 20 minutes interval for the recovery between the workouts. During the first stage one sub-group performed workout and a passive recovery was applied while the subjects of the second sub-group performed passive foot flexion movements. During the second stage the form of recovery was changed.  Arterial  blood  flow  intensity  was  registered  during  venous  occlusion  plethysmography  and  passive  foot  flexion  movements were performed by special mechanical equipment.Research results. The results obtained during the study showed that maximal increase of blood flow registered at 21 second after the workout was (52.0 ± 2.9 ml/min/100 ml), while the application of passive movements before the workout decreased the blood flow intensity (45.0  ± 2.6 ml/min/100 ml). It was significantly (p  < 0.05) lower compared to passive rest. Discussion and conclusions. These effects can be explained by reduced venous filling and increased venous vascular reserve capacity in the calves. The results obtained during this research allow concluding that passive foot flexion manoeuvre applied before the isometric workload faster decreases the blood flow intensity during the  recovery.Keywords: arterial blood flow recovery, isometric physical workout, passive foot movement, passive rest.

scholarly journals EFFECT OF DIFFERENT OCCLUSION PRESSURE ON PECULIARITIES OF MUSCLE BLOOD FLOW

2018 ◽  
Vol 1 (108) ◽  
pp. 2-8
Author(s):  
Kęstutis Bunevičius ◽  
Albinas Grunovas ◽  
Jonas Poderys
Keyword(s):  
Blood Pressure ◽  
Blood Flow ◽  
Arterial Blood Pressure ◽  
Arterial Blood Flow ◽  
Control Group ◽  
Reactive Hyperaemia ◽  
Occlusion Pressure ◽  
Arterial Blood ◽  
Flow Intensity ◽  
Blood Flow Intensity

Background. Occlusion pressure intensity influences the blood flow intensity. Immediately after the cuff pressure is released, reactive hyperaemia occurs. Increased blood flow and nutritive delivery are critical for an anabolic stimulus, such as insulin. The aim of study was to find which occlusion pressure was optimal to increase the highest level of post occlusion reactive hyperaemia. Methods. Participants were randomly assigned into one of the four conditions (n = 12 per group): control group without blood flow restriction, experimental groups with 120; 200 or 300 mmHg occlusion pressure. We used venous occlusion plethysmography and arterial blood pressure measurements. Results. After the onset of 120 and 200 mm Hg pressure occlusion, the blood flow intensity significantly decreased. Occlusion induced hyperaemia increased arterial blood flow intensity 134 ± 11.2% (p < .05) in the group with 120 mmHg, in the group with 200 mmHg it increased 267 ± 10.5% (p < .05), in the group with 300 mmHg it increased 233 ± 10.9% (p < .05). Applied 300 mmHg occlusion from the 12 minute diastolic and systolic arterial blood pressure decreased statistically significantly. Conclusions. Occlusion manoeuvre impacted the vascular vasodilatation, but the peak blood flow registered after occlusion did not relate to applied occlusion pressure. The pressure of 200 mmHg is optimal to impact the high level of vasodilatation. Longer than 12 min 300 mmHg could not be recommended due to the steep decrease of systolic and diastolic blood pressures.

scholarly journals Influence Of 200 mm Hg Occlusion Pressure on Arterial Blood Flow in Skeletal Muscles and Physical Working Capacity

2018 ◽  
Vol 4 (87) ◽  
Author(s):  
Kęstutis Bunevičius ◽  
Albinas Grūnovas ◽  
Karolis Tijūnaitis
Keyword(s):  
Blood Flow ◽  
Skeletal Muscles ◽  
Arterial Blood Flow ◽  
Physical Working Capacity ◽  
Occlusion Pressure ◽  
Working Capacity ◽  
Arterial Blood ◽  
Flow Intensity ◽  
Experimental Group ◽  
Blood Flow Intensity

Research background and hypothesis. Different weights, resistance, scope of work, rest periods, frequency, and performance velocity are used to increase strength in training sessions. The traditional training facility with high resistance can be replaced by low resistance while limiting muscle blood flow. Hypothesis: a single 15-minute 200 mm Hg occlusion pressure can affect physical working capacity and blood flow intensity.Research  aim.  was  to  analyze  changes  in  the  intensity  of  the  calf  muscle  arterial  blood  flow  and  physical working capacity with and without 200 mm Hg pressure occlusion.   Research  methods.  were  dynamometry,  ergometry,  venous  occlusive  plethysmography.  The  control  group included six and experimental group – 12 male athletes in endurance sports. In both groups we recorded arterial blood flow at rest and after 75% of maximum voluntary contraction force (MVC) physical work lifting a weight until complete fatigue. Between the first and second physical workloads in the experimental group we applied 15 min occlusion with 40 mm wide cuff in the groin area.Research results. During the physical load in the control group, arterial blood flow significantly increased, and during recovery it did not reach to baseline. In the experimental group arterial blood flow significantly increased and during recovery it did not reach the baseline. Blood flow intensity both the first and the second physical loads altered analogically. Before the second physical load in the experimental group, 200 mm Hg occlusion had a negative effect on skeletal muscle working capacity compared with the passive rest in the control group.Discussion and conclusions. Occlusion of 200 mm Hg in the groin area reduces arterial blood flow intensity in calf skeletal muscles. Immediately after the removal of 200 mm Hg occlusion, arterial blood flow intensity increases and then decreases to its original value. 200 mm Hg occlusion pressure reduces blood flow intensity in the skeletal muscles.    Before  the  second  physical  load,  200  mm  Hg  occlusion  decreases  skeletal  muscle  working  capacity compared with passive rest in the control group.Keywords: occlusion, physical working capacity, arterial blood flow.

scholarly journals Regulation of ventilatory muscle blood flow

1996 ◽  
Vol 81 (4) ◽  
pp. 1455-1468 ◽  
Author(s):  
Sabah N. A. Hussain
Keyword(s):  
Blood Flow ◽  
Contractile Function ◽  
Muscle Blood Flow ◽  
High Energy ◽  
Arterial Blood Flow ◽  
Abdominal Muscles ◽  
Negative Effects ◽  
Inspiratory Muscles ◽  
Arterial Blood ◽  
Ventilatory Muscles

Hussain, Sabah N. A. Regulation of ventilatory muscle blood flow. J. Appl. Physiol. 81(4): 1455–1468, 1996.—The ventilatory muscles perform various functions such as ventilation of the lungs, postural stabilization, and expulsive maneuvers (e.g., coughing). They are classified in functional terms as inspiratory muscles, which include the diaphragm, parasternal intercostal, external intercostal, scalene, and sternocleidomastoid muscles; and expiratory muscles, which include the abdominal muscles, internal intercostal, and triangularis sterni. The ventilatory muscles require high-energy phosphate compounds such as ATP to fuel the biochemical and physical processes of contraction and relaxation. Maintaining adequate intracellular concentrations of these compounds depends on adequate intracellular substrate levels and delivery of these substrates by arterial blood flow. In addition to the delivery of substrates, blood flow influences muscle function through the removal of metabolic by-products, which, if accumulated, could exert negative effects on several excitatory and contractile processes. Skeletal muscle substrate utilization is also dependent on the ability to extract substrates from arterial blood, which, in turn, is accomplished by increasing the total number of perfused capillaries. It follows that matching perfusion to metabolic demands is critical for the maintenance of normal muscle contractile function. In this article, I review the factors that influence ventilatory muscle blood flow. Major emphasis is placed on the diaphragm because a large number of published reports deal with diaphragmatic blood flow. The second reason for focusing on the diaphragm is because it is the largest and most important inspiratory muscle.

Comparison of plethysmographic methods with pulsed Doppler blood flowmetry

1979 ◽  
Vol 236 (6) ◽  
pp. H899-H903 ◽  
Author(s):  
B. I. Levy ◽  
W. R. Valladares ◽  
A. Ghaem ◽  
J. P. Martineaud
Keyword(s):  
Blood Flow ◽  
Strain Gauge ◽  
Venous Occlusion ◽  
Arterial Blood Flow ◽  
Pulsed Doppler ◽  
Local Cooling ◽  
Doppler Flowmetry ◽  
Strain Gauge Plethysmography ◽  
Arterial Blood ◽  
Local Warming

Hand blood flow was measured at rest, with local warming, and with local cooling. Three methods were simultaneously used: water plethysmography (WP), mercury-in-rubber strain gauge plethysmography (SG), and pulsed Doppler flowmetry (D). Of these, water plethysmography is the most sensitive and accurate; strain gauge plethysmography is simpler but less accurate; and pulsed Doppler flowmetry precisely measures instantaneous arterial blood flow without venous occlusion.

EFFECT OF VENOUS OCCLUSION ON PERIPHERAL ARTERIAL BLOOD-FLOW

The Lancet ◽  
1951 ◽  
Vol 257 (6651) ◽  
pp. 380-382 ◽  
Author(s):  
JesseE. Thompson ◽  
JohnR. Vane
Keyword(s):  
Blood Flow ◽  
Venous Occlusion ◽  
Arterial Blood Flow ◽  
Arterial Blood ◽  
Peripheral Arterial

Cardiac output and redistribution of organ blood flow in hypermetabolic sepsis

1984 ◽  
Vol 246 (3) ◽  
pp. R331-R337 ◽  
Author(s):  
C. H. Lang ◽  
G. J. Bagby ◽  
J. L. Ferguson ◽  
J. J. Spitzer
Keyword(s):  
Blood Flow ◽  
Cardiac Output ◽  
Muscle Blood Flow ◽  
Intraperitoneal Administration ◽  
Peripheral Resistance ◽  
Arterial Blood Flow ◽  
Tissue Blood Flow ◽  
Organ Blood Flow ◽  
Arterial Blood ◽  
Over Time

Cardiac output (CO) and the distribution of blood flow were studied in chronically catheterized conscious rats during sustained (4 days) sepsis. Septicemia was induced by intraperitoneal administration of a pooled fecal inoculum, and tissue blood flow and CO were determined daily with 15-micron radioactive microspheres. Mean arterial blood pressure (MABP, 113 +/- 2 mmHg), CO (244.5 +/- 11.4 ml X min-1 X kg-1), and total peripheral resistance (TPR, 1.36 +/- 0.07 mmHg X ml-1 X min) were stable in control rats over the 4 days postinoculation. Septic animals showed a consistent tachycardia with MABP significantly reduced only on days 3 and 4 (86 +/- 4 mmHg). A hyperdynamic response to sepsis was indicated by an elevated CO (27%) and similarly reduced TPR on day 2. The calculated stroke volume averaged 0.22 +/- 0.01 ml/beat and did not vary over time or between the two groups. There was a 40-70% increase in blood flow to the heart, spleen, adrenal glands, and small intestine, and a greater than sixfold increase in hepatic arterial blood flow. The sustained elevation of coronary blood flow, observed in septic animals, was independent of myocardial work and is consistent with impaired myocardial function. Pancreas, stomach, and skeletal muscle blood flow was consistently compromised (24, 39, and 52%, respectively) during sepsis. Blood flow in other organs remained unchanged over time. Sepsis-induced changes in the fractional distribution of blood flow to various organs were similar to those described for absolute flow. (ABSTRACT TRUNCATED AT 250 WORDS)

scholarly journals The Effect of Muscle Exercise on Perforators Flow: A Prospective Cohort Study

Medicina ◽  
2020 ◽  
Vol 56 (7) ◽  
pp. 338
Author(s):  
Francesco Amendola ◽  
Luca Vaienti ◽  
Giuseppe Cottone ◽  
Giovanna Zaccaria ◽  
Zvi Steinberger ◽  
...  
Keyword(s):  
Blood Flow ◽  
Muscle Blood Flow ◽  
Arterial Blood Flow ◽  
Anterior Tibial Artery ◽  
Healthy Population ◽  
Tibial Artery ◽  
Arterial Blood ◽  
Anterior Tibial ◽  
Basal Flow ◽  
Flow Velocities

Background and objectives: The metabolic response after exercise causes a significant increase in the muscle blood flow. While these effects are demonstrated for intra-muscular vessels, there is no evidence about the inter-muscular vessels, such as the septocutaneous perforators supplying the skin after they branch out from the deep source artery. The aim of our prospective study was to quantify the changes in the anterior tibial artery perforators arterial blood flow after mild isotonic exercise in a young and healthy population. Material and Methods: We performed a prospective analysis of 34 patients who were admitted to the Plastic Surgery Department from December 2019 to April 2020. Flow velocities of two previously identified anterior tibial artery perforators were recorded both before and after 10 complete flexion-extensions of the foot. The time to revert to basal flow was measured. We further classified the overmentioned patients based on their level of physical activity. Results: We registered a significant increase in systolic, diastolic and mean blood flow velocities both in proximal and distal anterior tibial artery perforators after exercise. Fitter patients exhibited a higher increase in proximal leg perforators than those who did less than three aerobic workouts a week. The time to return to basal flow ranged from 60 to 90 s. Conclusions: This was the first study to describe the effect of muscular activity on perforators blood flow. Even mild exercise significantly increases the perforator flow. Waiting at least two minutes at rest before performing the Doppler study, thus avoiding involved muscle activation, can notably improve the reliability of the pre-operative planning.

Skeletal muscle as the major site of nonshivering thermogenesis in cold-acclimated ducklings

1993 ◽  
Vol 265 (5) ◽  
pp. R1076-R1083 ◽  
Author(s):  
C. Duchamp ◽  
H. Barre
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
Cold Exposure ◽  
Muscle Blood Flow ◽  
Arterial Blood Flow ◽  
O2 Consumption ◽  
Nonshivering Thermogenesis ◽  
Arterial Blood ◽  
Brown Adipose ◽  
Leg Muscle

Despite their lack of brown adipose tissue, 6-wk-old cold-acclimated muscovy ducklings (4 degrees C; CA) exhibit nonshivering thermogenesis (NST) in the cold. To determine the site of this NST, the regional distribution of blood flow was measured by the microsphere method in the thermoneutral zone (25 degrees C) and during acute exposure to cold (8 degrees C). Ducklings reared at thermal neutrality (TN), which use shivering to produce extra heat in the cold, were compared with CA ducklings, which substitute NST for shivering. Further, the contribution of skeletal muscle thermogenesis to the increased heat production in the cold was estimated by measuring leg muscle blood flow and arteriovenous difference in oxygen content [(a-v)O2] across the leg, enabling an estimation of muscle O2 consumption. During cold exposure, a similar increase in total leg muscle blood flow occurred in TN and CA ducklings (+127 and +130% respectively), while hepatic arterial blood flow increased less (+56 to +37%, respectively). This rise in blood flow was accounted for by an increase in cardiac output, which was smaller in CA than in TN ducklings, and in both groups by a redistribution of blood flow to the most thermogenic organs (skeletal muscles and liver). The (a-v)O2 across the leg was not changed by cold exposure, indicating that the increase in leg muscle O2 consumption resulted mainly from the increase in blood flow.(ABSTRACT TRUNCATED AT 250 WORDS)

Hand arterial blood flow responses to local venous congestion

1981 ◽  
Vol 240 (6) ◽  
pp. H980-H983
Author(s):  
B. I. Levy ◽  
Y. Oliva ◽  
J. P. Martineaud
Keyword(s):  
Blood Flow ◽  
Venous Occlusion ◽  
Middle Part ◽  
Venous Congestion ◽  
Arterial Blood Flow ◽  
Cuff Inflation ◽  
Blood Flows ◽  
Arterial Blood ◽  
Hand Control ◽  
Occlusion Cuff

Hand and forearm blood flows were measured in 12 subjects by means of a range-gated Doppler velocimeter, in basal conditions and after inflation (30, 50, 60, 70, and 90 mmHg) of a venous occlusion cuff on the middle part of the forearm. In basal conditions, there were significant decreases in radial, ulnar, and brachial blood flow after cuff inflation (up to -78, -69, and -31%, respectively). Minimal values were reached in less than 7 s. After occlusion of the circulation of the hand, control brachial blood flow was lowered but not significantly affected by venous distension. The results must be considered and accounted where venous occlusion plethysmography is used to measure segmental blood flow.

scholarly journals Laser Doppler Flowmetry to Differentiate Arterial From Venous Occlusion in Free Tissue Transfer

2019 ◽  
Vol 27 (4) ◽  
pp. 297-304
Author(s):  
Emre Gazyakan ◽  
Huang-Kai Kao ◽  
Ming-Huei Cheng ◽  
Holger Engel
Keyword(s):  
Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Free Tissue Transfer ◽  
Venous Occlusion ◽  
Laser Doppler ◽  
Arterial Blood Flow ◽  
Probe Laser ◽  
Doppler Flowmetry ◽  
Arterial Blood ◽  
Tissue Transfer

Purpose: The differentiation of arterial versus venous occlusion in free tissue transfers has rarely been described. This study investigated changes in blood flow caused by arterial and venous occlusion and the potential for laser Doppler flowmetry to distinguish between these 2 conditions for better clinical assessment and management of free tissue transfer. Methods: Six patients with a mean age of 43.5 years underwent microsurgical free tissue transfer. The venous and arterial blood flow of the vessels and skin flap were monitored using laser Doppler flowmetry with high-frequency pulsed Doppler transducers for vessels and skin before, during, and after clamping the vessels for 10 minutes. Results: The average decreases in blood flow in the artery and vein caused by clamping were 94.4% and 93.8%, respectively. On average, arterial occlusion demonstrated a sudden drop of 67.7% and venous occlusion caused a decrease of 26.6% on laser Doppler flowmetry in free tissue skin. Conclusion: Using a vessel-holding probe, laser Doppler flowmetry could be used to differentiate between arterial and venous occlusion in free tissue transfer, thereby aiding decision-making for better clinical management.

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