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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

- Muscle performance. Peak torque and muscle power of dorsiflexors andplantar flexors in the ankle and the knee flexors and extensors of both limbs(right and left). * = p≤0.05.
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f03: - Muscle performance. Peak torque and muscle power of dorsiflexors andplantar flexors in the ankle and the knee flexors and extensors of both limbs(right and left). * = p≤0.05.

Mentions: The ICG showed decreased levels in muscle strength and power output. The results werestatistically significant for the peak torque and muscle power in the right plantarflexors (p =0.036 and p =0.037) and left plantarflexors (p =0.008 and p =0.011), respectively, andmuscle power of the left dorsiflexors (p =0.025). The extensors andflexors of the knee, in turn, showed no significant differences in peak torque or musclepower, but lower values were observed in the ICG (Figure3).


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

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

- Muscle performance. Peak torque and muscle power of dorsiflexors andplantar flexors in the ankle and the knee flexors and extensors of both limbs(right and left). * = p≤0.05.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f03: - Muscle performance. Peak torque and muscle power of dorsiflexors andplantar flexors in the ankle and the knee flexors and extensors of both limbs(right and left). * = p≤0.05.
Mentions: The ICG showed decreased levels in muscle strength and power output. The results werestatistically significant for the peak torque and muscle power in the right plantarflexors (p =0.036 and p =0.037) and left plantarflexors (p =0.008 and p =0.011), respectively, andmuscle power of the left dorsiflexors (p =0.025). The extensors andflexors of the knee, in turn, showed no significant differences in peak torque or musclepower, but lower values were observed in the ICG (Figure3).

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