PURPOSE: To assess the transverse relaxation time T(2) and diffusion coefficient D before and following exercise in the tibialis anterior muscle and determine whether T(2) and D values were correlated. METHODS: Measurements of T(2) and D were performed at 3 T within axial slices through the calf muscles of six healthy volunteers at 95 s intervals before and for 10-12 min after a dorsiflexion exercise to exhaustion. RESULTS: The mean +/- standard deviation (SD) of T(2) and D before exercise were 32 +/- 1.55 ms and 1.52 +/- 0.15 mum(2)/ms, and after exercise were 43 +/- 2.5 ms and 1.72 +/- 0.13 mum(2)/ms, respectively. The mean +/- SD inter-individual recovery times of the % change in T(2) and D after exercise were 7.9 +/- 4.2 and 10.9 +/- 7.0 min, respectively. The T(2) and D values showed a significant correlation throughout the experiments (r (2) = 0.45). CONCLUSIONS: The increase in T(2) of skeletal muscle after exercise is correlated with the increase of the diffusion coefficient D and the recovery times appear similar, indicating that any model used to explain T(2) increases with exercise must also account for increased diffusion coefficients.
PURPOSE: To assess the transverse relaxation time T(2) and diffusion coefficient D before and following exercise in the tibialis anterior muscle and determine whether T(2) and D values were correlated. METHODS: Measurements of T(2) and D were performed at 3 T within axial slices through the calf muscles of six healthy volunteers at 95 s intervals before and for 10-12 min after a dorsiflexion exercise to exhaustion. RESULTS: The mean +/- standard deviation (SD) of T(2) and D before exercise were 32 +/- 1.55 ms and 1.52 +/- 0.15 mum(2)/ms, and after exercise were 43 +/- 2.5 ms and 1.72 +/- 0.13 mum(2)/ms, respectively. The mean +/- SD inter-individual recovery times of the % change in T(2) and D after exercise were 7.9 +/- 4.2 and 10.9 +/- 7.0 min, respectively. The T(2) and D values showed a significant correlation throughout the experiments (r (2) = 0.45). CONCLUSIONS: The increase in T(2) of skeletal muscle after exercise is correlated with the increase of the diffusion coefficient D and the recovery times appear similar, indicating that any model used to explain T(2) increases with exercise must also account for increased diffusion coefficients.
Authors: Fábio Viadanna Serráo; Paula Regina Mendes da Silva Serráo; Bernd Foerster; Alberto Tannús; Vanessa Monteiro Pedro; Tania F Salvini Journal: J Sports Sci Med Date: 2007-03-01 Impact factor: 2.988
Authors: Donnie Cameron; Mustapha Bouhrara; David A Reiter; Kenneth W Fishbein; Seongjin Choi; Christopher M Bergeron; Luigi Ferrucci; Richard G Spencer Journal: NMR Biomed Date: 2017-04-06 Impact factor: 4.044
Authors: Eric E Sigmund; Dabang Sui; Obehi Ukpebor; Steven Baete; Els Fieremans; James S Babb; Michael Mechlin; Kecheng Liu; Jane Kwon; KellyAnne McGorty; Philip A Hodnett; Jenny Bencardino Journal: J Magn Reson Imaging Date: 2013-02-25 Impact factor: 4.813
Authors: E E Sigmund; S H Baete; T Luo; K Patel; D Wang; I Rossi; A Duarte; M Bruno; D Mossa; A Femia; S Ramachandran; D Stoffel; J S Babb; A G Franks; J Bencardino Journal: Eur Radiol Date: 2018-06-04 Impact factor: 5.315
Authors: Jasper M Morrow; Emma Matthews; Dipa L Raja Rayan; Arne Fischmann; Christopher D J Sinclair; Mary M Reilly; John S Thornton; Michael G Hanna; Tarek A Yousry Journal: Neuromuscul Disord Date: 2013-06-27 Impact factor: 4.296
Authors: Jasper M Morrow; Christopher D J Sinclair; Arne Fischmann; Mary M Reilly; Michael G Hanna; Tarek A Yousry; John S Thornton Journal: Eur Radiol Date: 2014-04-20 Impact factor: 5.315
Authors: Maria Psatha; Zhiqing Wu; Fiona Gammie; Aivaras Ratkevicius; Henning Wackerhage; Thomas W Redpath; Fiona J Gilbert; Judith R Meakin; Richard M Aspden Journal: BMJ Open Sport Exerc Med Date: 2017-07-20