Effects of physical training on the calf and thigh blood flows.

Saito, Mitsuru; Matsui, Hideji; Miyamura, Miharu

doi:10.2170/jjphysiol.30.955

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…Our findings stand in contrast to other studies of different training duration or muscle groups [1,11,15]. For example, Yasuda et al reported an increase in FBF in the ipsi-and contralateral arm following 6 weeks of HG exercise training [15] and attributed the improvements to changes in neurogenic balance [15].…”

Section: Discussioncontrasting

confidence: 99%

“…In contrast, other investigators report a reduction in limb blood flow following short-term training programs. Bond et al [1] attributed reductions in leg blood flow to an increase in muscle cross-sectional area without proportional changes in microvascular density, whereas Saito et al attributed the lower leg blood flow to a more effective metabolic process [11].…”

Section: Discussionmentioning

confidence: 99%

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Modification of Forearm Vascular Function Following Short-Term Handgrip Exercise Training

Alomari¹,

Welsch²,

Prisby³

et al. 2001

Int J Sports Med

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This study examined the effect of low (25% of maximum voluntary contraction) and high (75% of maximum voluntary contraction) intensity short-term handgrip exercise training on localized vascular function. Forearm blood flow was evaluated in twenty-eight healthy men (age: 23 +/- 4.3) pre- and post-training in both forearms at rest, following forearm occlusion and following forearm occlusion combined with handgrip exercise using strain gauge plethysmography. The 4-week program consisted of non-dominant handgrip exercise performed 5 d/wk for 20 min at either low or high intensity. Following training a significant increase in forearm blood flow was noted for the nondominant arm in both groups after forearm occlusion (low intensity group: 16.51%; high intensity group: 20.72%; p = 0.001) and forearm occlusion combined with handgrip exercise (low intensity group: 17.71%; high intensity group: 29.27%; p = 0.001). No significant group by test interaction (p = 0.632) was found. These data show improved unilateral vasodilatory responsiveness after short-term handgrip training. In addition, the degree of change is most notable following the greatest vasodilatory stimulus. Lastly, a lack of group by treatment interaction suggests the change may be independent of training stimulus.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Modification of Forearm Vascular Function Following Short-Term Handgrip Exercise Training

Alomari¹,

Welsch²,

Prisby³

et al. 2001

Int J Sports Med

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“…Although NIRS technique measured the muscle O 2 balance between supply and utilization, muscle deoxygenation after training in MI may be partly explained by the increase in muscle O 2 consumption of exercising muscle. Another possibility for enhanced muscle deoxygenation during submaximal exercise is reduced muscle blood flow caused by exercise training, as seen in previous studies of healthy subjects (Saito et al 1980 ) and post-MI patients (Clausen and Trap-Jensen 1970 ). However, VO 2 during submaximal exercise was significantly higher after training in this study (as described below).…”

Section: Discussionmentioning

confidence: 82%

Aerobic training enhances muscle deoxygenation in early post-myocardial infarction

et al. 2016

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PurposeExercise-induced skeletal muscle deoxygenation is startling by its absence in early post-myocardial infarction (MI) patients. Exercise training early post-MI is associated with reduced cardiovascular risk and increased aerobic capacity. We therefore investigated whether aerobic training could enhance the muscle deoxygenation in early post-MI patients.Methods21 ± 8 days after the first MI patients (n = 16) were divided into 12-week aerobic training (TR, n = 10) or non-training (CON, n = 6) groups. Before and after intervention, patients performed ramp bicycle exercise until exhaustion. Muscle deoxygenation was measured at vastus lateralis by near-infrared spectroscopy during exercise.ResultsAerobic training significantly increased peak oxygen uptake (VO2) (18.1 ± 3.0 vs. 22.9 ± 2.8 mL/kg/min), decreased the change in muscle oxygen saturation from rest to submaximal and peak exercise (∆SmO2; 2.4 ± 5.7 vs. −7.0 ± 3.4 %), and increased the relative change in deoxygenated hemoglobin/myoglobin concentration from rest to submaximal (−1.5 ± 2.3 vs. 3.0 ± 3.6 μmol/L) and peak exercise (1.1 ± 4.5 vs. 8.2 ± 3.5 μmol/L). Change in total hemoglobin/myoglobin concentration in muscle was not significantly affected by training. In CON, no significant alterations were found after 12 weeks in either muscle deoxygenation or peak VO2 (18.6 ± 3.8 vs. 18.9 ± 4.6 mL/kg/min). An increase in peak VO2 was significantly negatively correlated with change in ∆SmO2 (r = −0.65) and positively associated with change in ∆deoxy-Hb/Mb at peak exercise (r = 0.64) in TR.ConclusionsIn early post-MI patients, aerobic training enhanced skeletal muscle deoxygenation, and the enhancement was related to increased aerobic capacity.

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“…The lower blood flow during submaximal exercise or depressed post-exercise hyperemia was observed in the calf of trained subjects in comparison with untrained ones (ELSNER and CARLSON,1962;VARNAUSKAS et al, 1970;PHILIPPI et a!.,1973 ;SAITO et a!.,1980). These results suggest that training brings about a more effective utilization of the available leg blood flow for metabolic processes even at a lower flow.…”

Section: Discussionmentioning

confidence: 92%

Thigh and calf blood flows after isometric contraction in untrained and trained subjects.

et al. 1983

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The present study was undertaken to examine whether or not there were any differences between untrained and trained subjects in the changes of blood flow in the ipsilateral and contralateral lower limbs after isometric exercise. Blood flow of the thigh and calf in both right and left legs were measured simultaneously before and after isometric contraction with mercury-in-silastic strain gauge venous occlusion plethysmography. In the present study, the main pattern of blood flow responses in the active and non-active limbs was strikingly similar in all subjects : a significant fall in blood flow immediately after isometric contraction at a force of about 50 % of maximal muscle strength for 15 sec was observed in the non-active lower limbs. Peak blood flow of the exercised thigh in the trained group was significantly higher than that in the untrained ones. From these results, it was suggested that higher blood flow after isometric exercise in the trained subjects may be due to the improvement of degree of vasodilation in the lower limb as a result of physical training.

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Effects of physical training on the calf and thigh blood flows.

Cited by 7 publications

References 9 publications

Modification of Forearm Vascular Function Following Short-Term Handgrip Exercise Training

Modification of Forearm Vascular Function Following Short-Term Handgrip Exercise Training

Aerobic training enhances muscle deoxygenation in early post-myocardial infarction

Thigh and calf blood flows after isometric contraction in untrained and trained subjects.

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