Endurance training refers to exercising to increase stamina and endurance. The idea is to be able to perform the activity for extended periods of time. Exercises for endurance tend to be aerobic in nature versus anaerobic movements (i.e. resistance training or high intensity, short duration exercises like sprinting).
Distance walking is a great choice for endurance activity as it strengthens and elongates the muscles for extended periods and results in several positive physiological adaptations –including improved cardiovascular efficiency and metabolic processes.
Walking is also less stressful to the joints than running, making it an exercise option suitable for multiple fitness levels.
More Answers from Joan Roth , NASM Elite Trainer