Concomitant changes in cross-sectional area and water content in skeletal muscle after resistance exercise
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Concomitant changes in cross-sectional area and water content in skeletal muscle after resistance exercise. / Kristiansen, M S; Uhrbrand, Anders; Hansen, M; Shiguetomi-Medina, J M; Vissing, Kristian; Stødkilde-Jørgensen, Hans; Langberg, Henning.
In: Scandinavian Journal of Medicine & Science in Sports, Vol. 24, No. 4, 2014, p. 260-268.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Concomitant changes in cross-sectional area and water content in skeletal muscle after resistance exercise
AU - Kristiansen, M S
AU - Uhrbrand, Anders
AU - Hansen, M
AU - Shiguetomi-Medina, J M
AU - Vissing, Kristian
AU - Stødkilde-Jørgensen, Hans
AU - Langberg, Henning
N1 - © 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
PY - 2014
Y1 - 2014
N2 - This study investigated how one bout (1EX) and three bouts (3EX) of strenuous resistance exercise affected the cross-sectional area (CSA) and water content (WC) of the quadriceps muscle and patella tendon (PT), 4 h and 52 h after the last exercise bout. Ten healthy untrained male subjects performed 1EX with one leg and 3EX with the other leg. CSA and WC were measured with magnetic resonance imaging 10, 20 and 30 cm proximal to the tibia plateau (TP) for the muscle, and at the proximal, central and distal site for the PT prior to exercise, and 4 h and 52 h after the last exercise bout. Ten centimeter above the TP, muscle CSA was significantly increased at 4 h (1EX: 13 ± 5%; 3EX: 13 ± 4%) and 52 h (1EX: 16 ± 5%; 3EX: 16 ± 5%) compared with baseline. Muscle WC was significantly increased at 4 h (1EX: 7 ± 1%; 3EX: 6 ± 2%) and 52 h (1EX: 8 ± 2%; 3EX: 8 ± 3%) compared to baseline. PT central CSA was significantly reduced at 52 h (3EX: 14 ± 2%) compared with baseline and (3EX: 13 ± 1%) compared with 4 h. Present data demonstrate that strenuous resistance exercise results in an acute increase in muscle WC and underlines the importance of ensuring sufficient time between the last exercise bout and the determination of anatomical dimensions in muscles.
AB - This study investigated how one bout (1EX) and three bouts (3EX) of strenuous resistance exercise affected the cross-sectional area (CSA) and water content (WC) of the quadriceps muscle and patella tendon (PT), 4 h and 52 h after the last exercise bout. Ten healthy untrained male subjects performed 1EX with one leg and 3EX with the other leg. CSA and WC were measured with magnetic resonance imaging 10, 20 and 30 cm proximal to the tibia plateau (TP) for the muscle, and at the proximal, central and distal site for the PT prior to exercise, and 4 h and 52 h after the last exercise bout. Ten centimeter above the TP, muscle CSA was significantly increased at 4 h (1EX: 13 ± 5%; 3EX: 13 ± 4%) and 52 h (1EX: 16 ± 5%; 3EX: 16 ± 5%) compared with baseline. Muscle WC was significantly increased at 4 h (1EX: 7 ± 1%; 3EX: 6 ± 2%) and 52 h (1EX: 8 ± 2%; 3EX: 8 ± 3%) compared to baseline. PT central CSA was significantly reduced at 52 h (3EX: 14 ± 2%) compared with baseline and (3EX: 13 ± 1%) compared with 4 h. Present data demonstrate that strenuous resistance exercise results in an acute increase in muscle WC and underlines the importance of ensuring sufficient time between the last exercise bout and the determination of anatomical dimensions in muscles.
U2 - 10.1111/sms.12160
DO - 10.1111/sms.12160
M3 - Journal article
C2 - 24330190
VL - 24
SP - 260
EP - 268
JO - Scandinavian Journal of Medicine & Science in Sports
JF - Scandinavian Journal of Medicine & Science in Sports
SN - 0905-7188
IS - 4
ER -
ID: 98569741