dc.contributor.author | Manickaraj, Nagarajan | |
dc.contributor.author | Bisset, Leanne M | |
dc.contributor.author | Ryan, Michael | |
dc.contributor.author | Kavanagh, Justin J | |
dc.date.accessioned | 2018-07-24T02:23:51Z | |
dc.date.available | 2018-07-24T02:23:51Z | |
dc.date.issued | 2016 | |
dc.identifier.issn | 0195-9131 | |
dc.identifier.doi | 10.1249/MSS.0000000000000815 | |
dc.identifier.uri | http://hdl.handle.net/10072/101791 | |
dc.description.abstract | Background: Individuals with lateral epicondylalgia
(LE) have delayed upper limb reaction time (RT); however, it is unknown if the mechanisms of this dysfunction are related to neural
processing or the affected forearm muscles. The aim of this study was to examine the timing of processes that occur before and after
forearm muscles are activated during the RT task. Methods: Eleven LE (42 T 11 yr) and 11 healthy controls (42 T 11 yr) performed rapid
wrist extension in response to an audio cue. Intramuscular EMG was obtained from extensor carpi radialis brevis (ECRB), extensor
digitorum communis (EDC), extensor carpi ulnaris (ECU), and anconeus. Premotor time (PMT) was the duration from an audio cue to
the onset of muscle activity, and motor time (MT) was the onset of muscle activity to the onset of wrist extension. Standard clinical
assessments of LE were also performed. Results: RT was significantly slower (33; 95% CI, 1–66 ms) in the LE group. There were no group
differences in PMT and the order of muscle activation. Instead, the MT of ECRB (18; 95% CI, 6–31 ms), EDC (12; 95% CI, 1–23 ms), ECU
(28; 95% CI, 9–46 ms), and anconeus (33; 95% CI, 11–56 ms) showed significant delay in LE group. Regression analyses revealed that the
duration of LE could predict RT, ECRB, and anconeus PMT, whereas cold pain threshold predicted ECRB MT. Conclusions: Delayed RT
in LE was predominantly caused by deficits in ECRB and EDC MT. This study provides preliminary evidence that in the people with longer
LE symptoms, duration appeared to have faster RT, although confirmation of this finding is required before firm conclusions can be drawn. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Lippincott Williams & Wilkins | |
dc.relation.ispartofpagefrom | 599 | |
dc.relation.ispartofpageto | 606 | |
dc.relation.ispartofissue | 4 | |
dc.relation.ispartofjournal | Medicine and Science in Sports and Exercise | |
dc.relation.ispartofvolume | 48 | |
dc.subject.fieldofresearch | Sports science and exercise | |
dc.subject.fieldofresearch | Sports science and exercise not elsewhere classified | |
dc.subject.fieldofresearch | Medical physiology | |
dc.subject.fieldofresearch | Health services and systems | |
dc.subject.fieldofresearch | Public health | |
dc.subject.fieldofresearch | Clinical sciences | |
dc.subject.fieldofresearchcode | 4207 | |
dc.subject.fieldofresearchcode | 420799 | |
dc.subject.fieldofresearchcode | 3208 | |
dc.subject.fieldofresearchcode | 4203 | |
dc.subject.fieldofresearchcode | 4206 | |
dc.subject.fieldofresearchcode | 3202 | |
dc.title | Muscle Activity during Rapid Wrist Extension in People with Lateral Epicondylalgia | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
gro.faculty | Griffith Health, School of Allied Health Sciences | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Kavanagh, Justin J. | |
gro.griffith.author | Bisset, Leanne M. | |