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In Vivo Measurement...
In Vivo Measurements of Glucose Uptake in Human Achilles Tendon During Different Exercise Intensities
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Hannukainen, J (author)
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Kalliokosk, KK (author)
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Nuutila, P (author)
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Fujimoto, T (author)
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Kemppainen, J (author)
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Viljanen, T (author)
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- Laaksonen, Marko (author)
- Mittuniversitetet,Institutionen för hälsovetenskap (-2013)
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Parkkola, R (author)
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Knuut, J (author)
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Kjaer, M (author)
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(creator_code:org_t)
- Georg Thieme Verlag KG, 2005
- 2005
- English.
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In: International Journal of Sports Medicine. - : Georg Thieme Verlag KG. - 0172-4622 .- 1439-3964. ; 26, s. 727-731
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Muscular contraction and loading of adjacent tendons has been demonstrated to cause increased blood flow and metabolic activity in the peritendinous region. However, it is poorly known to what extent the human tendon itself takes up glucose during exercise. Thus, the purpose of this study was to measure tendon glucose uptake with increasing exercise intensity and to compare it to muscle glucose uptake at the same intensities. Eight young men were examined on three separate days during which they performed 35 min of cycling at 30, 55 and 75 % of VO2max, respectively. Glucose uptake was measured directly by positron emission tomography (PET) with 2-[ (18)F]fluoro-2-deoxyglucose ([18F]FDG). [18F]FDG was injected after 10 min of exercise that was continued for a further 25 min after the injection. PET scanning of the thigh and Achilles region was performed after the exercise. Glucose uptake of the Achilles tendon (AT) remained unchanged (7.1 +/- 1.5, 6.6 +/- 1.1, and 6.0 +/- 1.1 micromol.kg(-1).min(-1)) with the increasing workload, although the glucose uptake in m. quadriceps femoris simultaneously clearly increased (48 +/- 35, 120 +/- 35, and 152 +/- 74 micromol.kg(-1).min(-1), p < 0.05). In conclusion, the AT takes up glucose during exercise but in significantly smaller amounts than the skeletal muscle does. Furthermore, glucose uptake in the AT is not increased with the increasing exercise intensity. This may be partly explained by the cycle ergometry exercise used in the present study, which probably causes only a little increase in strain to the AT with increasing exercise intensity.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Keyword
- Connective tissue
- metabolism
- blood flow
- Idrottsvetenskap
- Sports
- Idrott
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Hannukainen, J
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Kalliokosk, KK
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Nuutila, P
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Fujimoto, T
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Kemppainen, J
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Viljanen, T
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show more...
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Laaksonen, Marko
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Parkkola, R
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Knuut, J
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Kjaer, M
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show less...
- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Health Sciences
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and Sport and Fitnes ...
- Articles in the publication
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International Jo ...
- By the university
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Mid Sweden University