Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/25954
Title: Is the impact of fatigue related to walking capacity and perceived ability in persons with multiple sclerosis? A multicenter study
Authors: Dalgas, Ulrik
Langeskov-Christensen, Martin
Skjerbæk, Anders Guldhammer
Jensen, E.
BAERT, Ilse 
Romberg, A.
Santoyo Medina, C.
GEBARA, Benoit 
Maertens de Noordhout, B.
Knuts, K.
Béthoux, F.
Rasova, K.
SEVERIJNS, Deborah 
Bibby, B.M.
Kalron, A.
Norman, B.
VAN GEEL, Fanny 
WENS, Inez 
FEYS, Peter 
Issue Date: 2018
Source: Journal of the neurological sciences, 387, p. 179-186
Abstract: Background The relationship between fatigue impact and walking capacity and perceived ability in patients with multiple sclerosis (MS) is inconclusive in the existing literature. A better understanding might guide new treatment avenues for fatigue and/or walking capacity in patients with MS. Objective To investigate the relationship between the subjective impact of fatigue and objective walking capacity as well as subjective walking ability in MS patients. Methods A cross-sectional multicenter study design was applied. Ambulatory MS patients (n = 189, age: 47.6 ± 10.5 years; gender: 115/74 women/men; Expanded Disability Status Scale (EDSS): 4.1 ± 1.8 [range: 0–6.5]) were tested at 11 sites. Objective tests of walking capacity included short walking tests (Timed 25-Foot Walk (T25FW), 10-Metre Walk Test (10mWT) at usual and fastest speed and the timed up and go (TUG)), and long walking tests (2- and 6-Minute Walk Tests (MWT). Subjective walking ability was tested applying the Multiple Sclerosis Walking Scale-12 (MSWS-12). Fatigue impact was measured by the self-reported modified fatigue impact scale (MFIS) consisting of a total score (MFIStotal) and three subscales (MFISphysical, MFIScognitive and MFISpsychosocial). Uni- and multivariate regression analysis were performed to evaluate the relation between walking and fatigue impact. Results MFIStotal was negatively related with long (6MWT, r = −0.14, p = 0.05) and short composite (TUG, r = −0.22, p = 0.003) walking measures. MFISphysical showed a significant albeit weak relationship to walking speed in all walking capacity tests (r = −0.22 to −0.33, p < .0001), which persisted in the multivariate linear regression analysis. Subjective walking ability (MSWS-12) was related to MFIStotal (r = 0.49, p < 0.0001), as well as to all other subscales of MFIS (r = 0.24–0.63, p < 0.001), showing stronger relationships than objective measures of walking. Conclusions The physical impact of fatigue is weakly related to objective walking capacity, while general, physical, cognitive and psychosocial fatigue impact are weakly to moderately related to subjective walking ability, when analysed in a large heterogeneous sample of MS patients.
Notes: Dalgas, U (reprint author), Aarhus Univ, Dept Publ Hlth, Sect Sport Sci, Aarhus, Denmark. dalgas@ph.au.dk
Keywords: Fatigue; Walking capacity; Multiple sclerosis
Document URI: http://hdl.handle.net/1942/25954
ISSN: 0022-510X
e-ISSN: 1878-5883
DOI: 10.1016/j.jns.2018.02.026
ISI #: 000430775700034
Category: A1
Type: Journal Contribution
Validations: ecoom 2019
Appears in Collections:Research publications

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