Benjamin J Darter

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Computerized assessment of gait is commonly used in both research and clinical settings to quantify gait mechanics and detect change in performance. Minimal Detectable Change values have only recently been reported, are only available for patient populations, and in many cases exceed 10°. Twenty nine healthy individuals underwent two biomechanical gait(More)
PURPOSE This study examined how oxygen consumption, relative exercise intensity, vertical ground reaction forces (VGRF), and loading rate (LR) were affected while using a weighted vest (WV) during treadmill walking. METHODS A sample of 10 (aged 23.4 +/- 1.7 yr) subjects performed a standardized walking test (4-min stages at 0.89, 1.12, 1.34, 1.56, and(More)
BACKGROUND AND PURPOSE Gait training is an important component of rehabilitation after lower-extremity amputation. Abnormal gait performance often persists even for individuals who reacquire a high level of function. This case report describes the use of a virtual reality (VR)-based gait training program that provides real-time feedback in order to improve(More)
OBJECTIVE To investigate the effectiveness of a home-based multiple-speed treadmill training program to improve gait performance in persons with a transfemoral amputation (TFA). DESIGN Repeated measures. SETTING Research laboratory. PARTICIPANTS Individuals with a TFA (N=8) who had undergone a unilateral amputation at least 3 years prior as a result(More)
PURPOSE Oxygen consumption (VO2; mLO2/kg/min), gait efficiency (GE; mlO2/kg/m) and heart rate (HR; beats per minute) are measures of physiological gait performance. However, the collection device, procedures for data normalization, and biological factors can affect measurement variability. The purpose of this study was to determine the test-retest(More)
Few established measures allow effective quantification of physical performance in severely injured service members. We sought to establish preliminary normative data in 180 healthy, active-duty service members for physical performance measures that can be readily implemented in a clinical setting. Interrater and test-retest reliability and minimal(More)
Due to increased interest in treadmill gait training, recent research has focused on the similarities and differences between treadmill and overground walking. Most of these studies have tested healthy, young subjects rather than impaired populations that might benefit from such training. These studies also do not include optic flow, which may change how(More)
BACKGROUND Technological advances in prosthetic design include the use of microprocessors that adapt device performance based on user motion. The Proprio ankle unit prepositions the foot to adjust for walking on slopes and increases foot clearance during swing to minimize gait deviations. STUDY DESIGN Comparative analysis. OBJECTIVES To investigate the(More)
Preventing loss of balance in individuals with transtibial amputation is important, as they are susceptible to a high frequency of fall related injuries. In order to validate fall prevention and balance therapies, methods to assess gait stability must be developed. Kinematic, temporal-spatial, and center of mass data from six healthy young participants with(More)
BACKGROUND A new triaxial accelerometer (AMP 331) provides a novel approach to understanding free-living activity through its ability to measure real time speed, cadence, and step length. This study examined the reliability and accuracy of the AMP 331, along with construction of prediction equations for oxygen consumption and energy cost. METHODS Young(More)