Reliability and Validity of a New Test for Muscle Power Evaluation of Stroke Patients

Abstract

Abstract.[Purpose] The purpose of this study was to establish an optimal load setting method for a 9-second modified-Wingate Anaerobic Test (m-WAnT) and to examine the reliability and validity of the test.[Subjects] The subjects were 28 hemiplegic stroke patients and 18 of them were examined as to the test's validity.[Methods] The mWAnT was performed twice on two different days to calculate the Mean Power (MP). In order to derive an optimal load setting expression, multiple regression analysis was performed using the optimal load (a value roughly 10% higher than the torque value achieved at the time-point of 6 seconds) as the dependent variable and 6 items as the independent variables. The Five-Repetition Sit-to-Stand Test (FRSST) and Maximum Walking Speed (MWS) were measured and their correlations with were examined the MP.[Results] The ICC (1,1) of the MP of the first and second values of MP was 0.982 (95% CI, 0.961-0.991). The result of multiple regression analysis showed that the unaffected side and affected side LEPT were significantly related and the coefficient of determination (R 2 ) was 0.812. MP significantly correlated with FRSST and MWS of the 18 subjects. [Conclusion] This study confirmed the reliability and validity of m-WAnT and derived the optimal load setting equation as well.

Feasibility and Reliability of Quadriceps Muscle Power and Optimal Movement Velocity Measurements in Different Populations of Subjects

“…For a 9-second modified Wingate Anaerobic Test, the ICC of the first and second values of mean power was 0.982 in 28 hemiplegic stroke patients [ 34 ]. The ICC was 0.87–0.98 for isotonic quadriceps power measures, and the SEM was < 10% for average/peak power and peak velocity in patients with mild to very severe COPD [ 35 ].…”

Relationship between Lower Extremity Muscle Mass, Leg Extension Strength and Muscle Power of Hemiplegic Stroke Patients

“…For the lower extremity muscle power measurement, a modified-Wingate Anaerobic Test (m-WAnT) for hemiplegic stroke patients was performed with reference to a preceding study 10) . The load used for the m-WAnT was calculated with the following formula using the affected and unaffected LEPTs obtained in the leg extension strength measurement.…”

Anaerobic exercise testing in rehabilitation: A systematic review of available tests and protocols

“…Four different lower-body mWAnT protocols were found using a bicycle [3 protocols] (69-71) or recumbent cycle ergometer [1 protocol] (72). Three 30 s bicycle protocols were found in patients with CP and able-bodied wheelchair users (69-71), a 9 s recumbent test was performed in patients with CVA (72). Resistance in the 3 bicycle ergometer protocols was scaled to body mass (69)(70)(71), where resistance was set at 15% of the leg extension peak torque in the recumbent ergometer mWAnT.…”

“…Eleven protocols assessing anaerobic capacity in lower-body exercise were found (69)(70)(71)(72)(73)(74)(75). Three different tests can be identified; mWAnT, sprint tests and jump tests (Table II) using a variety of protocols (Table III).…”

“…In this review protocols that were shorter than 10 s or longer than 30 s were found. The main reason for shortening the protocol was the decreased physical capacity of patients (72). The FV-relationship test, performed on an ACE, consisted of 5-7 efforts each lasting 6-8 s. Moreover, mWAnT protocols lasting 5 or 8 s were found.…”