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Analysis of isokinetic muscle function and postural control in individuals with intermittent claudication.

Lanzarin M, Parizoto P, Santos GM - Braz J Phys Ther (2016)

Bottom Line: IC is manifested by a decrease in ambulatory function.There were no between-group differences during the SOT.The ICG showed decreased muscle strength and power in the plantar flexors compared to the CG.

View Article: PubMed Central - PubMed

Affiliation: Centro de Ciências da Saúde e Esportes, Universidade do Estado de Santa Catarina, Florianópolis, SC, Brasil.

ABSTRACT

Background: Intermittent claudication (IC) is a debilitating condition that mostly affects elderly people. IC is manifested by a decrease in ambulatory function. Individuals with IC present with motor and sensory nerve dysfunction in the lower extremities, which may lead to deficits in balance.

Objective: This study aimed to measure postural control and isokinetic muscle function in individuals with intermittent claudication.

Method: The study included 32 participants of both genders, 16 IC participants (mean age: 64 years, SD=6) and 16 healthy controls (mean age: 67 years, SD=5), which were allocated into two groups: intermittent claudication group (ICG) and control group (CG). Postural control was assessed using the displacement and velocity of the center of pressure (COP) during the sensory organization test (SOT) and the motor control test (MCT). Muscle function of the flexor and extensor muscles of the knee and ankle was measured by an isokinetic dynamometer. Independent t tests were used to calculate the between-group differences.

Results: The ICG presented greater displacement (p =0.027) and speed (p =0.033) of the COP in the anteroposterior direction (COPap) during the MCT, as well as longer latency (p =0.004). There were no between-group differences during the SOT. The ICG showed decreased muscle strength and power in the plantar flexors compared to the CG.

Conclusion: Subjects with IC have lower values of strength and muscle power of plantiflexores, as well as changes in postural control in dynamic conditions. These individuals may be more vulnerable to falls than healthy subjects.

No MeSH data available.


Related in: MedlinePlus

- Sensory Organization Test (SOT) - Range and Velocity of Center ofPressure (COP) in the anteroposterior and mediolateral directions. SOTconditions: (1) eyes open, fixed surface and visual surrounding; (2) eyesclosed and fixed surface; (3) eyes open, fixed surface and sway referencedvisual surrounding; (4) eyes open, sway referenced surface and fixed visualsurrounding; (5) eyes closed and sway referenced surface; and (6) eyes open,sway referenced surface and visual surrounding.
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f01: - Sensory Organization Test (SOT) - Range and Velocity of Center ofPressure (COP) in the anteroposterior and mediolateral directions. SOTconditions: (1) eyes open, fixed surface and visual surrounding; (2) eyesclosed and fixed surface; (3) eyes open, fixed surface and sway referencedvisual surrounding; (4) eyes open, sway referenced surface and fixed visualsurrounding; (5) eyes closed and sway referenced surface; and (6) eyes open,sway referenced surface and visual surrounding.

Mentions: The SOTs showed no evidence of statistically significant differences between groups inthe amplitude and average speed of the COP for the six test conditions, as shown inFigure 1. During the MCT, the two translations(anterior and posterior) were evaluated at two intensities (medium and large). Therewere significant differences in mean posterior translation condition with mediumintensity at ACOPap (p=0.027) and at ASap (p=0.033). Additionally, there weresignificant differences in latency time, it was higher in the ICG (156 ms, SD=17)compared to the CG (140 ms, DP=11) in posterior translation at the larger intensity(p=0.004), as shown in Figure 2.


Analysis of isokinetic muscle function and postural control in individuals with intermittent claudication.

Lanzarin M, Parizoto P, Santos GM - Braz J Phys Ther (2016)

- Sensory Organization Test (SOT) - Range and Velocity of Center ofPressure (COP) in the anteroposterior and mediolateral directions. SOTconditions: (1) eyes open, fixed surface and visual surrounding; (2) eyesclosed and fixed surface; (3) eyes open, fixed surface and sway referencedvisual surrounding; (4) eyes open, sway referenced surface and fixed visualsurrounding; (5) eyes closed and sway referenced surface; and (6) eyes open,sway referenced surface and visual surrounding.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4835164&req=5

f01: - Sensory Organization Test (SOT) - Range and Velocity of Center ofPressure (COP) in the anteroposterior and mediolateral directions. SOTconditions: (1) eyes open, fixed surface and visual surrounding; (2) eyesclosed and fixed surface; (3) eyes open, fixed surface and sway referencedvisual surrounding; (4) eyes open, sway referenced surface and fixed visualsurrounding; (5) eyes closed and sway referenced surface; and (6) eyes open,sway referenced surface and visual surrounding.
Mentions: The SOTs showed no evidence of statistically significant differences between groups inthe amplitude and average speed of the COP for the six test conditions, as shown inFigure 1. During the MCT, the two translations(anterior and posterior) were evaluated at two intensities (medium and large). Therewere significant differences in mean posterior translation condition with mediumintensity at ACOPap (p=0.027) and at ASap (p=0.033). Additionally, there weresignificant differences in latency time, it was higher in the ICG (156 ms, SD=17)compared to the CG (140 ms, DP=11) in posterior translation at the larger intensity(p=0.004), as shown in Figure 2.

Bottom Line: IC is manifested by a decrease in ambulatory function.There were no between-group differences during the SOT.The ICG showed decreased muscle strength and power in the plantar flexors compared to the CG.

View Article: PubMed Central - PubMed

Affiliation: Centro de Ciências da Saúde e Esportes, Universidade do Estado de Santa Catarina, Florianópolis, SC, Brasil.

ABSTRACT

Background: Intermittent claudication (IC) is a debilitating condition that mostly affects elderly people. IC is manifested by a decrease in ambulatory function. Individuals with IC present with motor and sensory nerve dysfunction in the lower extremities, which may lead to deficits in balance.

Objective: This study aimed to measure postural control and isokinetic muscle function in individuals with intermittent claudication.

Method: The study included 32 participants of both genders, 16 IC participants (mean age: 64 years, SD=6) and 16 healthy controls (mean age: 67 years, SD=5), which were allocated into two groups: intermittent claudication group (ICG) and control group (CG). Postural control was assessed using the displacement and velocity of the center of pressure (COP) during the sensory organization test (SOT) and the motor control test (MCT). Muscle function of the flexor and extensor muscles of the knee and ankle was measured by an isokinetic dynamometer. Independent t tests were used to calculate the between-group differences.

Results: The ICG presented greater displacement (p =0.027) and speed (p =0.033) of the COP in the anteroposterior direction (COPap) during the MCT, as well as longer latency (p =0.004). There were no between-group differences during the SOT. The ICG showed decreased muscle strength and power in the plantar flexors compared to the CG.

Conclusion: Subjects with IC have lower values of strength and muscle power of plantiflexores, as well as changes in postural control in dynamic conditions. These individuals may be more vulnerable to falls than healthy subjects.

No MeSH data available.


Related in: MedlinePlus