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Dual task interference during gait in people with Parkinson disease: effects of motor versus cognitive secondary tasks.
Phys Ther. 2002 Sep; 82(9):888-97.PT

Abstract

BACKGROUND AND PURPOSE

Exacerbation of movement disorders while doing 2 tasks (dual task performance) is a characteristic feature of Parkinson disease (PD). The aim of this investigation was to identify whether the type of secondary task (motor or cognitive) determined the severity of dual task interference.

SUBJECTS AND METHODS

Footstep patterns for 15 people with PD and 15 comparison subjects without PD were compared when they walked: (1) at a self-selected speed, (2) while simultaneously performing a motor task (coin transference), and (3) while simultaneously performing a cognitive task (digit subtraction). Gait speed, stride length, cadence, and the percentage of the gait cycle in double-limb stance (DS) were examined with a computerized stride analyzer.

RESULTS

When there was no second task, the mean stride length was less in the group with PD (1.29 m) than in the comparison group (1.51 m), and the mean gait speed was less in the group with PD (71.47 m/min) than in the comparison group (87.29 m/min). The mean cadence was less in the group with PD (110.79 steps/min) than in the comparison group (115.81 steps/min). The percentage of the gait cycle in DS was greater in the group with PD (33.38%) than in the comparison group (31.21%). Both groups reduced their stride length and speed when they had to change from unitask performance to dual task performance and DS increased. For the group with PD, cadence also decreased. For both groups, the type of secondary task had a negligible effect on the performance decrement.

DISCUSSION AND CONCLUSION

Although the performance of simultaneous motor or cognitive tasks compromised gait in people with PD, the type of secondary task was not a major determinant of the severity of dual task interference.

Authors+Show Affiliations

Wodonga Regional Health Service, Wodonga, Victoria, Australia.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12201803

Citation

O'Shea, Simone, et al. "Dual Task Interference During Gait in People With Parkinson Disease: Effects of Motor Versus Cognitive Secondary Tasks." Physical Therapy, vol. 82, no. 9, 2002, pp. 888-97.
O'Shea S, Morris ME, Iansek R. Dual task interference during gait in people with Parkinson disease: effects of motor versus cognitive secondary tasks. Phys Ther. 2002;82(9):888-97.
O'Shea, S., Morris, M. E., & Iansek, R. (2002). Dual task interference during gait in people with Parkinson disease: effects of motor versus cognitive secondary tasks. Physical Therapy, 82(9), 888-97.
O'Shea S, Morris ME, Iansek R. Dual Task Interference During Gait in People With Parkinson Disease: Effects of Motor Versus Cognitive Secondary Tasks. Phys Ther. 2002;82(9):888-97. PubMed PMID: 12201803.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dual task interference during gait in people with Parkinson disease: effects of motor versus cognitive secondary tasks. AU - O'Shea,Simone, AU - Morris,Meg E, AU - Iansek,Robert, PY - 2002/8/31/pubmed PY - 2002/9/20/medline PY - 2002/8/31/entrez SP - 888 EP - 97 JF - Physical therapy JO - Phys Ther VL - 82 IS - 9 N2 - BACKGROUND AND PURPOSE: Exacerbation of movement disorders while doing 2 tasks (dual task performance) is a characteristic feature of Parkinson disease (PD). The aim of this investigation was to identify whether the type of secondary task (motor or cognitive) determined the severity of dual task interference. SUBJECTS AND METHODS: Footstep patterns for 15 people with PD and 15 comparison subjects without PD were compared when they walked: (1) at a self-selected speed, (2) while simultaneously performing a motor task (coin transference), and (3) while simultaneously performing a cognitive task (digit subtraction). Gait speed, stride length, cadence, and the percentage of the gait cycle in double-limb stance (DS) were examined with a computerized stride analyzer. RESULTS: When there was no second task, the mean stride length was less in the group with PD (1.29 m) than in the comparison group (1.51 m), and the mean gait speed was less in the group with PD (71.47 m/min) than in the comparison group (87.29 m/min). The mean cadence was less in the group with PD (110.79 steps/min) than in the comparison group (115.81 steps/min). The percentage of the gait cycle in DS was greater in the group with PD (33.38%) than in the comparison group (31.21%). Both groups reduced their stride length and speed when they had to change from unitask performance to dual task performance and DS increased. For the group with PD, cadence also decreased. For both groups, the type of secondary task had a negligible effect on the performance decrement. DISCUSSION AND CONCLUSION: Although the performance of simultaneous motor or cognitive tasks compromised gait in people with PD, the type of secondary task was not a major determinant of the severity of dual task interference. SN - 0031-9023 UR - https://www.unboundmedicine.com/medline/citation/12201803/Dual_task_interference_during_gait_in_people_with_Parkinson_disease:_effects_of_motor_versus_cognitive_secondary_tasks_ L2 - https://www.diseaseinfosearch.org/result/5603 DB - PRIME DP - Unbound Medicine ER -