FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2312912156> ?p ?o ?g. }

• W2312912156 endingPage "614" @default.
• W2312912156 startingPage "614" @default.
• W2312912156 abstract "Two variables known to influence the integration of synaptic inputs and thereby modulate the discharge characteristics of motor units are the age of the individual and the compliance of the load supported by a limb. PURPOSE: To compare the influence of load compliance on the discharge characteristics of biceps brachii motor units at recruitment in young (Y) and old (O) humans. METHODS: The discharge times of single motor units were recorded from the biceps brachii in 16 Y adults (28 ± 4 yr) and 14 O adults (75 ± 4 yr). Two sustained contractions were performed with the elbow flexors using loads set at either small (11.7 ± 4.4) or large (17.8 ± 6.5% maximum) differences below the motor unit recruitment threshold. The task required subjects to maintain elbow angle at 1.57 rad. Motor unit activity was compared with data from Y and O adults who performed a similar protocol with the wrist fixed in a rigid restraint. RESULTS: Twenty motor units were recorded for each group of subjects. The average recruitment threshold forces did not differ between groups (Y: 25.9 ± 12.6%; O: 30.0 ± 10.9% maximum, p = 0.07). Y adults had a greater number of motor units that discharged action potentials intermittently at recruitment (small: 60%, large: 75% of tasks) than O adults (small: 20%, large: 20% of tasks). The time to recruitment for both Y and O was longer for the large difference (187 ± 227 s vs. 23 ± 46 s, p < 0.001). Discharge rate was similar for the two target-force differences in O (9.13 ± 2.9 vs. 9.29 ± 4.8 pps), but was less in Y for the large difference (8.57 ± 2.5 vs. 10.9 ± 3.3 pps, p = 0.04). The coefficient of variation for interspike interval was similar between target-force differences for Y and O (p = 0.43), but was less in O (22.4 ± 9.4% vs. 27.6 ± 12.3%, p = 0.07). Discharge rate did not differ between small and large differences in either Y or O for either load condition (p = 0.06). However, discharge variability was greater for the large target-force difference in Y when performing the rigid-restraint tasks (p = 0.002) and did not differ in O. CONCLUSION: Discharge rate and discharge variability at recruitment did not differ for either load for the old adults, suggesting that the integration of synaptic input differs between young and old adults. Supported by AG-09000 to RME." @default.
• W2312912156 created "2016-06-24" @default.
• W2312912156 creator A5050274704 @default.
• W2312912156 creator A5064227498 @default.
• W2312912156 creator A5080302483 @default.
• W2312912156 date "2011-05-01" @default.
• W2312912156 modified "2023-10-08" @default.
• W2312912156 title "Motor Unit Activity at Recruitment When Young and Old Adults Support Compliant Loads" @default.
• W2312912156 doi "https://doi.org/10.1249/01.mss.0000401695.70048.d7" @default.
• W2312912156 hasPublicationYear "2011" @default.
• W2312912156 type Work @default.
• W2312912156 sameAs 2312912156 @default.
• W2312912156 citedByCount "0" @default.
• W2312912156 crossrefType "journal-article" @default.
• W2312912156 hasAuthorship W2312912156A5050274704 @default.
• W2312912156 hasAuthorship W2312912156A5064227498 @default.
• W2312912156 hasAuthorship W2312912156A5080302483 @default.
• W2312912156 hasBestOaLocation W23129121561 @default.
• W2312912156 hasConcept C105702510 @default.
• W2312912156 hasConcept C15744967 @default.
• W2312912156 hasConcept C173172909 @default.
• W2312912156 hasConcept C1862650 @default.
• W2312912156 hasConcept C2777515770 @default.
• W2312912156 hasConcept C2778216619 @default.
• W2312912156 hasConcept C2781184374 @default.
• W2312912156 hasConcept C2781425072 @default.
• W2312912156 hasConcept C2781425419 @default.
• W2312912156 hasConcept C3019131375 @default.
• W2312912156 hasConcept C71924100 @default.
• W2312912156 hasConcept C99508421 @default.
• W2312912156 hasConceptScore W2312912156C105702510 @default.
• W2312912156 hasConceptScore W2312912156C15744967 @default.
• W2312912156 hasConceptScore W2312912156C173172909 @default.
• W2312912156 hasConceptScore W2312912156C1862650 @default.
• W2312912156 hasConceptScore W2312912156C2777515770 @default.
• W2312912156 hasConceptScore W2312912156C2778216619 @default.
• W2312912156 hasConceptScore W2312912156C2781184374 @default.
• W2312912156 hasConceptScore W2312912156C2781425072 @default.
• W2312912156 hasConceptScore W2312912156C2781425419 @default.
• W2312912156 hasConceptScore W2312912156C3019131375 @default.
• W2312912156 hasConceptScore W2312912156C71924100 @default.
• W2312912156 hasConceptScore W2312912156C99508421 @default.
• W2312912156 hasIssue "5" @default.
• W2312912156 hasLocation W23129121561 @default.
• W2312912156 hasOpenAccess W2312912156 @default.
• W2312912156 hasPrimaryLocation W23129121561 @default.
• W2312912156 hasRelatedWork W1809394698 @default.
• W2312912156 hasRelatedWork W1969346511 @default.
• W2312912156 hasRelatedWork W1997804671 @default.
• W2312912156 hasRelatedWork W2018883686 @default.
• W2312912156 hasRelatedWork W2039315390 @default.
• W2312912156 hasRelatedWork W2041378983 @default.
• W2312912156 hasRelatedWork W2071371958 @default.
• W2312912156 hasRelatedWork W2394665089 @default.
• W2312912156 hasRelatedWork W2409613471 @default.
• W2312912156 hasRelatedWork W4380577168 @default.
• W2312912156 hasVolume "43" @default.
• W2312912156 isParatext "false" @default.
• W2312912156 isRetracted "false" @default.
• W2312912156 magId "2312912156" @default.
• W2312912156 workType "article" @default.