Progressive strength baseline

Abstract

Controlling weight during a movement includes receiving a set of parameters comprising a nominal weight. It further includes detecting speed during a concentric phase. It further includes progressively adjusting weight during the concentric phase based on the detected speed and the nominal weight.

1 . (canceled) 
     
     
         2 . A system, comprising:
 a motor, wherein a cable is coupled between an actuator and the motor; and   a controller configured to control torque of the motor to progressively adjust an amount of resistance provided during a concentric phase of a repetition of a movement according to a rate of weight change that is determined based at least in part on:
 a first value comprising a fixed rate of weight change that is based at least in part on whether a detected cable speed is above or below a target speed; and 
 a second value that is proportional to a difference between the detected cable speed and the target speed. 
   
     
     
         3 . The system of  claim 2 , wherein the rate of weight change comprises an amount of weight to add or reduce per unit time. 
     
     
         4 . The system of  claim 2 , wherein the target speed is determined based at least in part on at least one of historical data associated with a user, or demographic data associated with the user. 
     
     
         5 . The system of  claim 2 , wherein the detected speed is based at least in part on measuring a change in position of the cable over time. 
     
     
         6 . The system of  claim 2 , wherein progressively adjusting the amount of resistance provided is based at least in part on a count of the repetition. 
     
     
         7 . The system of  claim 2 , further comprising one or more processors configured to determine an N-rep max, and wherein N is greater than one. 
     
     
         8 . The system of  claim 7 , wherein the N-rep max is used to determine a suggested weight for a subsequent set of the movement. 
     
     
         9 . The system of  claim 2 , wherein the repetition is included in a calibration set. 
     
     
         10 . The system of  claim 9 , wherein the calibration set is included in a workout in response to an indication that calibration should be performed. 
     
     
         11 . The system of  claim 10 , wherein the calibration set is included in the workout based at least in part on at least one of a period of user inactivity or an injury status of a user. 
     
     
         12 . A method, comprising:
 controlling torque of a motor to progressively adjust an amount of resistance provided during a concentric phase of a repetition of a movement according to a rate of weight change that is determined based at least in part on:
 a first value comprising a fixed rate of weight change that is based at least in part on whether a detected cable speed is above or below a target speed, wherein a cable is coupled between an actuator and the motor; and 
 a second value that is proportional to a difference between the detected cable speed and the target speed. 
   
     
     
         13 . The method of  claim 12 , wherein the rate of weight change comprises an amount of weight to add or reduce per unit time. 
     
     
         14 . The method of  claim 12 , wherein the target speed is determined based at least in part on at least one of historical data associated with a user, or demographic data associated with the user. 
     
     
         15 . The method of  claim 12 , wherein the detected speed is based at least in part on measuring a change in position of the cable over time. 
     
     
         16 . The method of  claim 12 , wherein progressively adjusting the amount of resistance provided is based at least in part on a count of the repetition. 
     
     
         17 . The method of  claim 12 , further comprising determining an N-rep max, and wherein N is greater than one. 
     
     
         18 . The method of  claim 17 , wherein the N-rep max is used to determine a suggested weight for a subsequent set of the movement. 
     
     
         19 . The method of  claim 12 , wherein the repetition is included in a calibration set. 
     
     
         20 . The method of  claim 19 , wherein the calibration set is included in a workout in response to an indication that calibration should be performed. 
     
     
         21 . The method of  claim 20 , wherein the calibration set is included in the workout based at least in part on at least one of a period of user inactivity or an injury status of a user.