Apparel Having Sensor System

An athletic performance monitoring system comprising:

• an article of apparel configured to be worn on a body of a user, the article of apparel comprising a upper body portion configured to be worn on an upper body of the user and a lower body portion configured to be worn on a lower body of the user;
• a sensor system connected to the article of apparel and configured to sense a movement of the user, the sensor system comprising an upper body sensor connected to the upper body portion of the article of apparel, a lower body sensor connected to the lower body portion of the article of apparel, at least one port in communication with the upper body sensor and the lower body sensor, and a plurality of conductive leads connecting the upper body sensor and the lower body sensor to the at least one port, wherein the upper body sensor and the lower body sensor are stretch-based sensors configured to increase in resistance upon tensile deformation, and the conductive leads are configured to conduct electronic signals in any state of deformation;
• at least one electronic module configured for connection to the at least one port, wherein the at least one electronic module is configured for collecting movement data from the upper body sensor and the lower body sensor through the at least one port based on the movement of the user, and wherein the at least one electronic module is further configured for transmitting the movement data;
• and
• an external device configured for receiving the movement data from the at least one electronic module, the external device further configured for analyzing the movement data and providing real-time feedback to the user regarding the movement of the user, based on analysis of the movement data.