Data-collecting exercise device

1. An exercise device, comprising:

a rigid rod having a first end and a second end;

a plurality of light sources arranged in a row along at least a portion of an axis extending between the first end and the second end of the rigid rod;

at least one load sensor for detecting an applied longitudinal force, wherein the applied longitudinal force comprises (i) a compressive longitudinal force applied to the exercise device, (ii) an expansive longitudinal force applied to the exercise device, or (iii) both (i) and (ii); and

a processor coupled to the at least one load sensor and to the plurality of light sources, the processor configured to execute one or more machine-executable instructions that, when executed by the processor, cause the processor to:

obtain a signal indicating a magnitude of the applied longitudinal force, and

cause a subset of the plurality of light sources to emit light, wherein a ratio of a number of light sources in the subset to a total number of the plurality of light sources represents the magnitude of the applied longitudinal force relative to a reference longitudinal force value.

2. The exercise device recited in claim 1 , further comprising a communication interface communicatively coupled to the processor, and wherein, when executed by the processor, the one or more machine-executable instructions further cause the processor to obtain information about the reference longitudinal force value from an external device over a communication link established between the communication interface and the external device.

3. The exercise device recited in claim 2 , wherein the information about the reference longitudinal force value comprises a plurality of parameters defining a target force profile.

4. The exercise device recited in claim 3 , wherein the plurality of parameters comprises at least one of an amount of time, a time interval, or a force magnitude.

5. The exercise device recited in claim 2 , wherein the information about the reference longitudinal force value comprises a mathematical function defining a target force profile.

6. The exercise device recited in claim 1 , wherein the plurality of light sources resides in a cavity or in a hollow portion of the rigid rod, and wherein the rigid rod is at least partially transparent or translucent to allow the emitted light to emanate from the rigid rod.

7. The exercise device recited in claim 6 , wherein the rigid rod comprises polyvinyl chloride (PVC).

8. The exercise device recited in claim 6 , wherein the rigid rod comprises aluminum, plastic, metal, or carbon fiber.

9. The exercise device recited in claim 1 , wherein the reference longitudinal force value is a magnitude of a target longitudinal force.

10. The exercise device recited in claim 9 , wherein, when executed by the processor, the one or more machine-executable instructions further cause the processor to determine the reference longitudinal force value based on a force profile.

11. The exercise device recited in claim 1 , wherein an outer surface of the rigid rod includes a channel, and further comprising a strip disposed within the channel, and wherein:

the strip is transparent or translucent, and

the plurality of light sources resides within or under the strip.

12. The exercise device recited in claim 11 , wherein the rigid rod comprises aluminum, wood, plastic, metal, bamboo, or carbon fiber.

13. The exercise device recited in claim 1 , wherein the rigid rod is at least partially hollow, and further comprising:

a plug inside of and fixedly coupled to the rigid rod; and

a base at the first end of the rigid rod,

wherein the at least one load sensor is situated within the rigid rod between the plug and the base.

14. The exercise device recited in claim 13 , wherein the at least one load sensor comprises a first load sensor and a second load sensor arranged in a bridge configuration.

15. The exercise device recited in claim 1 , wherein, when executed by the processor, the one or more machine-executable instructions further cause the processor to modify the reference longitudinal force value based on the applied longitudinal force.

16. The exercise device recited in claim 1 , wherein a color of the emitted light is a first color for a first value of the reference longitudinal force value and a second color for a second value of the reference longitudinal force value.

17. The exercise device recited in claim 1 , wherein a color of the emitted light is dependent on the reference longitudinal force value.

18. The exercise device recited in claim 1 , further comprising a communication interface communicatively coupled to the processor, and wherein, when executed by the processor, the one or more machine-executable instructions further cause the processor to send information about the applied longitudinal force to an external device over a communication link established between the communication interface and the external device.

19. The exercise device recited in claim 1 , further comprising a display communicatively coupled to the processor, and wherein, when executed by the processor, the one or more machine-executable instructions further cause the processor to provide workout information through the display, wherein the workout information comprises: an indication of the magnitude of the applied longitudinal force, an indication of an amount of time during which the applied longitudinal force was applied to the exercise device, an indication of a time under tension, or an indication of a number of repetitions.

20. The exercise device recited in claim 1 , wherein the rigid rod includes at least one hole, transparent region, or translucent region through which the emitted light is visible.