Stimulus Phase Duration on Discomfort and Electrically Induced Torque of Quadriceps Femoris

Universidade Cidade de Sao Paulo38 enrolled

Overview

This study aims to examine the variation in muscle torque and discomfort produced when electrically stimulating quadriceps femoris using pulsed current with three different phase durations in order to establish whether there are any advantages or disadvantages in varying the phase duration over the range examined.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Masking

SINGLE

Enrollment

Conditions

Torque Pain Perception

Interventions

400 microsecondsDEVICE

Neuromuscular electrical stimulation with stimulus phase duration of 400 microseconds

700 microsecondsDEVICE

Neuromuscular electrical stimulation with stimulus phase duration of 700 microseconds

1000 microsecondsDEVICE

Neuromuscular electrical stimulation with stimulus phase duration of 1000 microseconds

Eligibility

Sex: FEMALEMin age: 18 YearsMax age: 35 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * sedentary healthy university students. Exclusion Criteria: * history of knee surgery or injury, * musculoskeletal, cardiovascular or neurological disease including impaired sensation.

Locations (1)

Universidade Cidade de São Paulo

São Paulo, São Paulo, Brazil

Outcomes

Primary Outcomes

Torque

Torque will be measured using an isokinetic dynamometer. Torque will be registered in Newton meter \[N.m\]

Time frame: During 4 seconds of electrical stimulation

Secondary Outcomes

Discomfort

Discomfort will be measured using a 10 cm visual analogue scale (VAS) ranging from zero (no discomfort) to 10 (worst discomfort imaginable).

Time frame: During 6 seconds of electrical stimulation

Data from ClinicalTrials.gov

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