Abstract: Various implementations include a spotting device for supporting a barbell, the spotting device including a base and an arm. The base has a base body with first end and a second end, at least one foot coupled to the second end of the base body, and a base longitudinal axis. The arm has an arm body with a first end and a second end, a coupler coupled to the first end of the arm body, and an arm longitudinal axis. The coupler is couplable to a portion of a barbell. One of the first end of the base body and the second end of the arm body defines a body opening extending partially through the one of the base body or the arm body, and the other of the second end of the arm body and the first end of the base body is slidably disposed within the body opening.

Abstract: Methods and systems are provided for measuring anatomical dimensions from a single two-dimensional (2D) digital image. The digital image is taken from the front/anterior view using a mobile, handheld communication device. The linear measurements are used to estimate the body volume of the individual. Total body density is calculated from estimated body volume and body weight. Body composition (fat mass and fat-free mass) of the individual is derived from density using known mathematical conversion formulas. A method for estimating body composition analysis is provided. Systems and methods are provided that determine an individual's fitness by determining body composition of the individual using a picture of the individual, determining the individual's VO2 max based on the individual's movement (e.g., walking and/or running a measured distance over a measured amount of time), and determining the individual's fitness based on the body composition and the determined VO2 max.

Abstract: Various implementations include a spotting device for supporting a barbell, the spotting device including a base and an arm. The base has a base body with first end and a second end, at least one foot coupled to the second end of the base body, and a base longitudinal axis. The arm has an arm body with a first end and a second end, a coupler coupled to the first end of the arm body, and an arm longitudinal axis. The coupler is couplable to a portion of a barbell. One of the first end of the base body and the second end of the arm body defines a body opening extending partially through the one of the base body or the arm body, and the other of the second end of the arm body and the first end of the base body is slidably disposed within the body opening.