fitness (also related to sufferance, resilience, constitution, fortitude, and hardiness) is the ability of an organism to exert itself and remain active for a long period of time, as well as its ability to resist, withstand, recover from, and have immunity to trauma, wounds, or fatigue. It is usually used in aerobic or anaerobic exercise. The definition of 'long' varies according to the type of exertion – minutes for high intensity anaerobic exercise, hours or days for low intensity aerobic exercise. Training for endurance can have a negative impact on the ability to exert strength unless an individual also undertakes resistance training to counteract this effect.
Many personnel consider endurance to be an indicator of progress, when strength and cardio training. A person is able to accomplish or withstand a higher amount of effort than their original capabilities means their endurance is increasing expressing improvement. In looking to improve ones endurance they may slowly increase the amount of repetitions or time spent, if higher repetitions are taken rapidly muscle strength improves while less endurance is gained. Increasing endurance has been proven to release endorphins resulting in a positive mind. The act of gaining endurance through physical activity has been shown to decrease anxiety, depression, and stress, or any chronic disease in total. Although a greater endurance can assist the cardiovascular system it does not imply that any cardiovascular disease can be guaranteed to improve. "The major metabolic consequences of the adaptations of muscle to endurance exercise are a slower utilization of muscle glycogen and blood glucose, a greater reliance on fat oxidation, and less lactate production during exercise of a given intensity."
The term stamina is sometimes used synonymously and interchangeably with endurance.
Endurance may also refer to an ability to keep going through a tough situation involving hardship, stress, etc. (see patience)
- Adventure Racing
- Endurance training
- Long-distance running
- Physical activity
- Health and fitness
- Cardiovascular fitness
- Hickson, RC (1980). "Interference of strength development by simultaneously training for strength and endurance over a long period". European Journal of Applied Physiology and Occupational Physiology (Springer Verlag) 45 (2-3): 255–63. doi:10.1007/BF00421333. PMID 7193134.
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- "Tips on increasing stamina", Active.