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Titolo:
Electrophysiologic evaluation of muscle fatigue development and recovery in late polio
Autore:
Sunnerhagen, KS; Carlsson, U; Sandberg, A; Stalberg, E; Hedberg, M; Grimby, G;
Indirizzi:
Univ Gothenburg, Dept Rehabil Med, Gothenburg, Sweden Univ Gothenburg Gothenburg Sweden Dept Rehabil Med, Gothenburg, Sweden Uppsala Univ, Dept Clin Neurophysiol, Uppsala, Sweden Uppsala Univ Uppsala Sweden iv, Dept Clin Neurophysiol, Uppsala, Sweden
Titolo Testata:
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
fascicolo: 6, volume: 81, anno: 2000,
pagine: 770 - 776
SICI:
0003-9993(200006)81:6<770:EEOMFD>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
JUNCTION TRANSMISSION DEFECTS; PRIOR POLIOMYELITIS; POSTPOLIO PATIENTS; PERFORMANCE; CONTRACTION; RESONANCE; EXERCISE;
Keywords:
electromyography; muscle fatigue; postpoliomyelitis syndrome; rehabilitation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Sunnerhagen, KS Sahlgrens Univ Hosp, Dept Rehabil Med, Guldhedsgatan 19, S-41345 Gothenburg, Sweden Sahlgrens Univ Hosp Guldhedsgatan 19 Gothenburg Sweden S-41345
Citazione:
K.S. Sunnerhagen et al., "Electrophysiologic evaluation of muscle fatigue development and recovery in late polio", ARCH PHYS M, 81(6), 2000, pp. 770-776

Abstract

Objectives: To study aspects of fatigue in late-polio patients and healthycontrols. We hypothesized that late-polio subjects would develop more peripheral fatigue, assessed with surface electromyography (EMG), and that no major differences would exist between the two groups in neuromuscular junction transmission. Design: Case-control study. Setting: University hospital laboratory. Subjects: Ten patients with a history of polio (mean age, 54 yrs, SD = 5, mean time since polio onset, 49 yrs, SD = 7) and a matched control group (mean age, 52 yrs, SD = 8). Methods: A protocol with a stepwise force increase up to 80% of maximal voluntary contraction ending with an g-minute recovery period was performed twice, first with surface EMG and then with electrical stimulation and surface-recorded evoked M-response. Main Outcome Measures: Surface EMG analysis of voluntary activity and evoked M-response,Results: No significant differences existed between groups in the relativedecrease during the fatigue protocol. The recovery of force was slower in the late-polio subjects. A reduction in the root mean square (RMS) value during recovery was seen in the polio group, although a normalization of the mean power frequency (MPF) was seen in both groups. Conclusion: The weakness during the fatigue procedure was not caused by neuromuscular blockade, because electrical nerve stimulation evoked a normal response. The weakness after exercise was the result of a slow recovery that may reflect both central and peripheral fatigue.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/05/20 alle ore 13:31:00