Standardized intermittent static exercise increases peritendinous blood flow in human leg
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Standardized intermittent static exercise increases peritendinous blood flow in human leg. / Langberg, Henning; Bülow, J; Kjaer, M.
In: Clinical physiology (Oxford, England), Vol. 19, No. 1, 1999, p. 89-93.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Standardized intermittent static exercise increases peritendinous blood flow in human leg
AU - Langberg, Henning
AU - Bülow, J
AU - Kjaer, M
PY - 1999
Y1 - 1999
N2 - Alteration in tendinous and peritendinous blood flow during and after exercise is suggested to contribute to the development of Achilles tendon injury and inflammation. In the present study a method for evaluating the influence of standardized workload on peritendinous flow is presented. The radioactive isotope xenon-133 was injected just ventrally to the Achilles tendon 5 cm proximal to the tendon's insertion on the calcaneous. The disappearance of 133Xe was used to determine blood flow during intermittent static exercise of the calf muscle (1.5 s exercise/1.5 s rest) for 30 min at a workload equivalent to individual body weight (1 BW) in six healthy volunteers around both Achilles tendons (n = 12). During intermittent static exercise, blood flow was increased from 1.8 +/- 0.3 ml 100 g tissue-1 min-1 (mean value and SEM) (rest) to 6.1 +/- 1.3 ml 100 g tissue-1 min-1 (exercise) (P <0.05). The exercise induced an average increase in blood flow (3.4-fold) equivalent to results previously obtained during regular dynamic heel raises (P > 0.05). It is concluded that the method is well suited to study the influence of standardized workload on the physiology and pathophysiology of the tissue around the Achilles tendon in humans.
AB - Alteration in tendinous and peritendinous blood flow during and after exercise is suggested to contribute to the development of Achilles tendon injury and inflammation. In the present study a method for evaluating the influence of standardized workload on peritendinous flow is presented. The radioactive isotope xenon-133 was injected just ventrally to the Achilles tendon 5 cm proximal to the tendon's insertion on the calcaneous. The disappearance of 133Xe was used to determine blood flow during intermittent static exercise of the calf muscle (1.5 s exercise/1.5 s rest) for 30 min at a workload equivalent to individual body weight (1 BW) in six healthy volunteers around both Achilles tendons (n = 12). During intermittent static exercise, blood flow was increased from 1.8 +/- 0.3 ml 100 g tissue-1 min-1 (mean value and SEM) (rest) to 6.1 +/- 1.3 ml 100 g tissue-1 min-1 (exercise) (P <0.05). The exercise induced an average increase in blood flow (3.4-fold) equivalent to results previously obtained during regular dynamic heel raises (P > 0.05). It is concluded that the method is well suited to study the influence of standardized workload on the physiology and pathophysiology of the tissue around the Achilles tendon in humans.
KW - Achilles Tendon
KW - Adult
KW - Exercise
KW - Female
KW - Humans
KW - Male
KW - Regional Blood Flow
KW - Xenon Radioisotopes
M3 - Journal article
C2 - 10068871
VL - 19
SP - 89
EP - 93
JO - Clinical Physiology
JF - Clinical Physiology
SN - 0144-5979
IS - 1
ER -
ID: 38368540