Journal article
Different Effects of Transcranial Direct Current Stimulation on Leg Muscle Glucose Uptake Asymmetry in Two Women with Multiple Sclerosis
Brain sciences, Vol.10(8), pp.1-17
08/01/2020
DOI: 10.3390/brainsci10080549
PMCID: PMC7465960
PMID: 32823504
Abstract
Asymmetrical lower limb strength is a significant contributor to impaired walking abilities in people with multiple sclerosis (PwMS). Transcranial direct current stimulation (tDCS) may be an effective technique to enhance cortical excitability and increase neural drive to more-affected lower limbs. A sham-controlled, randomized, cross-over design was employed. Two women with MS underwent two 20 min sessions of either 3 mA tDCS or Sham before 20 min of treadmill walking at a self-selected speed. During walking, the participants were injected with the glucose analogue, [F-18] fluorodeoxyglucose (FDG). Participants were then imaged to examine glucose metabolism and uptake asymmetries in the legs. Standardized uptake values (SUVs) were compared between the legs and asymmetry indices were calculated. Subject 2 was considered physically active (self-reported participating in at least 30 min of moderate-intensity physical activity on at least three days of the week for the last three months), while Subject 1 was physically inactive. In Subject 1, there was a decrease in SUVs at the left knee flexors, left upper leg, left and right plantar flexors, and left and right lower legs and SUVs in the knee extensors and dorsiflexors were considered symmetric after tDCS compared to Sham. Subject 2 showed an increase in SUVs at the left and right upper legs, right plantar flexors, and right lower leg with no muscle group changing asymmetry status. This study demonstrates that tDCS may increase neural drive to leg muscles and decrease glucose uptake during walking in PwMS with low physical activity levels.
Details
- Title: Subtitle
- Different Effects of Transcranial Direct Current Stimulation on Leg Muscle Glucose Uptake Asymmetry in Two Women with Multiple Sclerosis
- Creators
- Alexandra C. Fietsam - University of IowaCraig D. Workman - University of IowaLaura L. Boles Ponto - University of Iowa Hospitals and ClinicsJohn Kamholz - University of Iowa Hospitals and ClinicsThorsten Rudroff - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Brain sciences, Vol.10(8), pp.1-17
- Publisher
- Mdpi
- DOI
- 10.3390/brainsci10080549
- PMID
- 32823504
- PMCID
- PMC7465960
- ISSN
- 2076-3425
- eISSN
- 2076-3425
- Number of pages
- 17
- Language
- English
- Date published
- 08/01/2020
- Academic Unit
- Neurology; Radiology; Psychiatry; Health and Human Physiology
- Record Identifier
- 9984259650002771
Metrics
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