Functional capacity assessment system and method
First Claim
1. A method of objectively testing the consistency of effort of a patient undergoing a functional capacity assessment by performing a selected exercise protocol over a range of motion and a limited resistance, the method comprising:
- applying a selected number of indicators at selected points with respect to the patient;
directing the patient through the exercise protocol;
capturing the patient'"'"'s movements on a video record;
digitizing the video record to obtain a digitized video record including the position of the indicators during the exercise protocol in at least a first direction;
tracking the motion of the indicators in the digitized video record in at least the first direction over time;
developing a patient data set including numerical performance parameters based, at least in part, on the position and the time of each indicator during the exercise protocol;
comparing the numerical performance parameters of the patient data set to at least a first range and a second range of a base data set, wherein the base data set comprises numerical ranges of performance parameters for subjects undergoing the exercise protocol, wherein the first range corresponds to the subjects exerting a true effort and wherein the second range corresponds to the subjects exerting a faked effort; and
determining the consistency of effort of the patient based, at least in part, on the comparison of the patient data set with the base data set, wherein an effort is consistent if the numerical performance parameters of the patient data set fall within the first range and wherein an effort is inconsistent if the numerical performance parameters of the patient data set fall within the second range.
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Abstract
A system and method of objectively testing the functional capacity of a patient over a range of motion and with a limited resistance are provided. A selected number of visual indicators are applied and maintained at selected points with respect to the patient. The patient is directed through a series of exercise movements. The patient'"'"'s movements are captured on a video record. This video record is digitized. The motion of the indicators is tracked in the digitized video record. A patient data set is developed including performance parameters based, at least in part, on the position and the time of each indicator during the movements. The patient data set is compared to a base data set. If the patient'"'"'s performance parameters fall within certain ranges, it can be determined that the patient is or is not exerting a true effort. The functional capacity of the patient is determined based, at least in part, on the comparison of the patient data set with the base data set.
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Citations
25 Claims
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1. A method of objectively testing the consistency of effort of a patient undergoing a functional capacity assessment by performing a selected exercise protocol over a range of motion and a limited resistance, the method comprising:
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applying a selected number of indicators at selected points with respect to the patient; directing the patient through the exercise protocol; capturing the patient'"'"'s movements on a video record; digitizing the video record to obtain a digitized video record including the position of the indicators during the exercise protocol in at least a first direction; tracking the motion of the indicators in the digitized video record in at least the first direction over time; developing a patient data set including numerical performance parameters based, at least in part, on the position and the time of each indicator during the exercise protocol; comparing the numerical performance parameters of the patient data set to at least a first range and a second range of a base data set, wherein the base data set comprises numerical ranges of performance parameters for subjects undergoing the exercise protocol, wherein the first range corresponds to the subjects exerting a true effort and wherein the second range corresponds to the subjects exerting a faked effort; and determining the consistency of effort of the patient based, at least in part, on the comparison of the patient data set with the base data set, wherein an effort is consistent if the numerical performance parameters of the patient data set fall within the first range and wherein an effort is inconsistent if the numerical performance parameters of the patient data set fall within the second range. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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2. A method of objectively testing the functional capacity of a patient over a range of motion and a limited resistance, the method comprising:
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applying a selected number of indicators at selected points with respect to the patient wherein at least one indicator is on a lifting platform; directing the patient through a series of exercise movements which include lifting the lifting platform; capturing the patient'"'"'s movements on a video record; digitizing the video record; tracking the motion of the indicators in the digitized video record; developing a patient data set including performance parameters based, at least in part, on the position and the time of each indicator during the movements; comparing the patient data set to a base data set; and determining the functional capacity of the patient based, at least in part, on the comparison of the patient data set with the base data set. - View Dependent Claims (3, 4, 5)
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20. A method for assessing the functional capacity of a a patient by moving a lifting platform over a predetermined series of exercise movements, the method comprising:
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moving by the patient of the lifting platform from a first level to a second level; adding a selected resistance to the lifting platform; moving by the patient of the lifting platform from the first level to the second level against the selected resistance; recording the motion of the lifting platform during the moving by the patient on a motion record; creating a patient data set including selected performance parameters corresponding, at least in part, to the position of the lifting platform over time during the moving by the patient; comparing the data set with a standard data set; determining the functional capacity of the patient based at least in part, on the comparison of the patient data set with the standard data set; wherein the motion of the lifting platform is recorded as pictures by a video tape camera, the method further comprising digitizing the pictures into digitized information, and storing the digitized information in a computer memory; wherein creating the patient data set includes determining the speed of the lifting platform in a vertical direction; further comprising creating the standard data set including; directing a limited group of people to exert a true effort; lifting by the limited group of the lifting platform from the first level to the second level; and determining ranges of performance parameters indicative of a true effort to a selected level of statistical confidence; wherein creating the standard data set further comprises; directing a limited group of people to exert a false effort; lifting by a limited group of the lifting platform from a first level to a second level; and determining ranges of performance parameters indicative of a false effort to a selected level of statistical confidence. - View Dependent Claims (21, 22)
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23. A method of objectively testing the functional capacity of a patient over a range of motion and a limited resistance, the method comprising:
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directing the patient through a series of exercise movements; capturing the patient'"'"'s movements on a video record; digitizing the video record; tracking the motion of a point with respect to the patient in the digitized video record; developing a patient data set including performance parameters based, at least in part, on the position and the time of the point during the movements; comparing the patient data set to a first base data set and a second base data set; and determining the functional capacity of the patient based, at least in part, on the comparison of the patient data set with the first base data set and the second base data set; wherein the first base data set comprises performance parameters of healthy patients exerting a true effort directed through the exercise movements; and wherein the second base data set comprises performance parameters of healthy patients exerting a faked effort directed through the exercise movements. - View Dependent Claims (24, 25)
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Specification