# US 8,052,584 B2 · System and method for determining a resistance level for training a muscle group for maximum power generation

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- Number: US 8,052,584 B2
- Document ID: US8052584B2
- Status: Granted
- Kind: B2
- Application number: 11/025,575
- Filed: 2004-12-29
- Published: 2005-10-27
- Granted: 2011-11-08
- Earliest claimed: 2004-04-22
- Assignees: Keiser Corporation
- Inventors: Dennis L. Keiser
- Web page: https://patentgrep.com/patent/US8052584B2

## CPC

- A63B 24/00: Electric or electronic controls for exercising apparatus of preceding groups; {Controlling or monitoring of exercises, sportive games, training or athletic performances}
- A63B 21/00069: {Setting or adjusting the resistance level; Compensating for a preload prior to use, e.g. changing length of resistance or adjusting a valve}
- A63B 21/00072: {by changing the length of a lever}
- A63B 21/0087: {of the piston-cylinder type (using hydraulic piston-cylinder type force resistors A63B21/0083)}
- A63B 21/4047: {Pivoting movement (weight pivoting A63B21/0615)}
- A63B 23/03533: {With separate means driven by each limb, i.e. performing different movements}
- A63B 23/1254: {Rotation about an axis parallel to the longitudinal axis of the body, e.g. butterfly-type exercises}
- A63B 21/005: using electromagnetic or electric force-resisters
- A63B 21/0083: {of the piston-cylinder type (using pneumatic piston-cylinder type force resistors A63B21/0087)}
- A63B 2220/13: Relative positions
- A63B 2220/17: Counting, e.g. counting periodical movements, revolutions or cycles, or including further data processing to determine distances or speed
- A63B 2225/096: automatically adjusted according to anthropometric data of the user
- A63B 2225/15: with identification means that can be read by electronic means
- A63B 2225/20: with means for remote communication, e.g. internet or the like
- A63B 2225/50: Wireless data transmission, e.g. by radio transmitters or telemetry
- A63B 2230/00: Measuring physiological parameters of the user
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

An apparatus and method evaluate the power of a muscle group of a user by measuring velocities of an engagement assembly coupled to a resistance element and moved by the user at a highest achievable velocity through a selected number of exercise strokes at each of two resistance levels. A first velocity is determined at a first resistance level. A second velocity is determined at a second resistance level. The first and second velocities are used in combination with the two resistance levels to determine a relationship between the velocity and the resistance level for a particular user. The resistance level where the resistance level and the velocity correspond to an overall maximum power is determined and is displayed for the user so that the user may use the optimum resistance level for training for maximum power generation.

## Claims

### Claim 1

A method for selecting a resistance level to use to train a muscle group for maximum power generation on an exercise apparatus having a controller, an engagement assembly movable against a resistance element by the muscle group of a user and having a monitoring system that measures a velocity of movement of the engagement assembly, the method comprising:
providing a controller;
adjusting the resistance element via the controller to a first resistance level (R1), the first resistance level (R1) selected to be a low level;
monitoring the movement of the engagement assembly against the first resistance level (R1) to determine a first velocity (V1) of movement of the engagement assembly;
adjusting the resistance element via the controller to a second resistance level (R2) different from the first resistance level (R1);
monitoring the movement of the engagement assembly against the second resistance level (R2) to determine a second velocity (V2) of movement of the engagement assembly;
using at least the equation P=R×V to determine a relationship between the resistance level and the velocity of movement of the engagement assembly based on the first and second resistance levels (R1, R2), the first and second velocities of movement (V1, V2), and a predetermined relationship between resistance levels and velocities, the determined relationship defining a plurality of power values (P1, P2, P3) including an overall maximum power (P3) generated by the user; and
using the determined relationship to determine a resistance level (R3) that corresponds to the overall maximum power (P3) as the resistance level to use for training the muscle group for maximum power.

### Claim 2 (depends on 1)

The method as defined in claim 1, wherein monitoring the movement of the engagement assembly against the first resistance level (R1) comprises monitoring a plurality of repetitions of the movement of the engagement assembly and selecting as the first velocity (V1) a maximum velocity achieved in the plurality of movements.

### Claim 3 (depends on 2)

The method as defined in claim 2, wherein the monitoring system monitors a maximum number of repetitions before selecting the first velocity (V1), and wherein adjusting the first resistance level (R1) of the resistance element to an adjusted first resistance level resets the repetitions such that the first velocity (V1) is selected only after the maximum number of repetitions are performed at the adjusted first resistance level.

### Claim 4 (depends on 2)

The method as defined in claim 2, wherein the monitoring system displays a number representing the power generated during each repetition to provide the user with an incentive to increase the power on a subsequent repetition.

### Claim 5 (depends on 1)

The method as defined in claim 1, wherein monitoring the movement of the engagement assembly against the second resistance level (R2) comprises monitoring a plurality of repetitions of the movement of the engagement assembly and selecting as the second velocity (V2) a maximum velocity achieved in the plurality of movements.

### Claim 6 (depends on 5)

The method as defined in claim 5, wherein the monitoring system monitors a maximum number of repetitions before selecting the second velocity (V2), and wherein adjusting the second resistance level (R2) of the resistance element to an adjusted second resistance level resets the repetitions such that the second velocity (V2) is selected only after the maximum number of repetitions are performed at the adjusted second resistance level.

### Claim 7 (depends on 5)

The method as defined in claim 5, wherein the monitoring system displays a number representing the power generated during each repetition at the second resistance level (R2) to provide the user with an incentive to increase the power on a subsequent repetition.

### Claim 8 (depends on 1)

The method as defined in claim 1 further comprising receiving a signal at the controller that is indicative of a position of an actuator button.

### Claim 9 (depends on 1)

The method as defined in claim 1 further comprising receiving a signal at the controller that is indicative of a position of a foot pedal.

### Claim 10 (depends on 1)

The method as defined in claim 1, wherein the determined resistance level (R3) is different than the first and second resistance levels (R1, R2).

### Claim 11 (depends on 1)

The method as defined in claim 1, wherein the determined resistance level (R3) is then displayed.

### Claim 12 (depends on 1)

The method as defined in claim 1, wherein the predetermined relationship is a linear relationship.

### Claim 13 (depends on 12)

The method as defined in claim 12, wherein the linear relationship between resistance levels (R) and velocities (V) is V=((V2−V1)/(R2−R1))×R+V1−((V2−V1)/(R2−R1))×R1.