Abstract
Objective The aim of this study was to analyze statistically the number of single leg movements (LMs) forming bilateral LMs during sleep, along with their combined duration, to eventually provide evidence-based data for the adjustment of the current scoring rules defining bilateral LMs. Methods Polysomnographic recordings of 111 untreated patients with RLS with a median age of 56.0 years, along with 42 normal controls with a mean age of 60.0 years, were included. In each recording, we identified all LMs that were considered as bilateral when two or more LMs were overlapping or the onset of the following movement was <0.5 second after the offset of the preceding LM. The remaining LMs were classified as monolateral. A series of parameters were computed for both bilateral and monolateral LMs. Results The duration of monolateral LMs in RLS patients was significantly longer than that of normal controls. For bilateral LMs, the maximum number of single LMs forming a bilateral movement and the maximum duration were slightly higher in RLS patients; however, the distribution of the number of individual LMs forming a single bilateral LM was similar. Only 0.12% and 0.27% of bilateral LMs consisted of >4 individual movements, and only 0.16% and 1.90% of bilateral LMs were >15 seconds in RLS patients and healthy controls, respectively. Conclusion Our results strongly suggest that bilateral LMs during sleep should be constituted by no more than four individual LMs and should have a maximum duration of 15 seconds.
| Original language | English |
|---|---|
| Pages (from-to) | 10-15 |
| Number of pages | 6 |
| Journal | Sleep Medicine |
| Volume | 32 |
| DOIs | |
| Publication status | Accepted/In press - Jun 7 2016 |
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Keywords
- Bilateral leg movements
- Periodic leg movements during sleep
- PLMS
- Restless legs syndrome
- Sleep scoring
ASJC Scopus subject areas
- Medicine(all)
Cite this
Bilateral leg movements during sleep : detailing their structure and features in normal controls and in patients with restless legs syndrome. / Ferri, Raffaele; Manconi, Mauro; Rundo, Francesco; Aricò, Debora; Bruni, Oliviero; Cosentino, Filomena I I; Fulda, Stephany.
In: Sleep Medicine, Vol. 32, 07.06.2016, p. 10-15.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Bilateral leg movements during sleep
T2 - detailing their structure and features in normal controls and in patients with restless legs syndrome
AU - Ferri, Raffaele
AU - Manconi, Mauro
AU - Rundo, Francesco
AU - Aricò, Debora
AU - Bruni, Oliviero
AU - Cosentino, Filomena I I
AU - Fulda, Stephany
PY - 2016/6/7
Y1 - 2016/6/7
N2 - Objective The aim of this study was to analyze statistically the number of single leg movements (LMs) forming bilateral LMs during sleep, along with their combined duration, to eventually provide evidence-based data for the adjustment of the current scoring rules defining bilateral LMs. Methods Polysomnographic recordings of 111 untreated patients with RLS with a median age of 56.0 years, along with 42 normal controls with a mean age of 60.0 years, were included. In each recording, we identified all LMs that were considered as bilateral when two or more LMs were overlapping or the onset of the following movement was <0.5 second after the offset of the preceding LM. The remaining LMs were classified as monolateral. A series of parameters were computed for both bilateral and monolateral LMs. Results The duration of monolateral LMs in RLS patients was significantly longer than that of normal controls. For bilateral LMs, the maximum number of single LMs forming a bilateral movement and the maximum duration were slightly higher in RLS patients; however, the distribution of the number of individual LMs forming a single bilateral LM was similar. Only 0.12% and 0.27% of bilateral LMs consisted of >4 individual movements, and only 0.16% and 1.90% of bilateral LMs were >15 seconds in RLS patients and healthy controls, respectively. Conclusion Our results strongly suggest that bilateral LMs during sleep should be constituted by no more than four individual LMs and should have a maximum duration of 15 seconds.
AB - Objective The aim of this study was to analyze statistically the number of single leg movements (LMs) forming bilateral LMs during sleep, along with their combined duration, to eventually provide evidence-based data for the adjustment of the current scoring rules defining bilateral LMs. Methods Polysomnographic recordings of 111 untreated patients with RLS with a median age of 56.0 years, along with 42 normal controls with a mean age of 60.0 years, were included. In each recording, we identified all LMs that were considered as bilateral when two or more LMs were overlapping or the onset of the following movement was <0.5 second after the offset of the preceding LM. The remaining LMs were classified as monolateral. A series of parameters were computed for both bilateral and monolateral LMs. Results The duration of monolateral LMs in RLS patients was significantly longer than that of normal controls. For bilateral LMs, the maximum number of single LMs forming a bilateral movement and the maximum duration were slightly higher in RLS patients; however, the distribution of the number of individual LMs forming a single bilateral LM was similar. Only 0.12% and 0.27% of bilateral LMs consisted of >4 individual movements, and only 0.16% and 1.90% of bilateral LMs were >15 seconds in RLS patients and healthy controls, respectively. Conclusion Our results strongly suggest that bilateral LMs during sleep should be constituted by no more than four individual LMs and should have a maximum duration of 15 seconds.
KW - Bilateral leg movements
KW - Periodic leg movements during sleep
KW - PLMS
KW - Restless legs syndrome
KW - Sleep scoring
UR - http://www.scopus.com/inward/record.url?scp=85008883044&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85008883044&partnerID=8YFLogxK
U2 - 10.1016/j.sleep.2016.03.018
DO - 10.1016/j.sleep.2016.03.018
M3 - Article
AN - SCOPUS:85008883044
VL - 32
SP - 10
EP - 15
JO - Sleep Medicine
JF - Sleep Medicine
SN - 1389-9457
ER -