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An informal method to determine optimal exercise intensity is the talk test. It states that exercise intensity is “just about right”, when the subject can “just respond to conversation.” [5] The talk test results in similar exercise intensity as the ventilatory threshold and is suitable for exercise prescription. [6]
The Borg RPE scale is a numerical scale that ranges from 6 to 20, [8] where 6 means "no exertion at all" and 20 means "maximal exertion." When a measurement is taken, a number is chosen from the following scale by an individual that best describes their perceived level of exertion during physical activity.
The metabolic equivalent of task (MET) is the objective measure of the ratio of the rate at which a person expends energy, relative to the mass of that person, while performing some specific physical activity compared to a reference, currently set by convention at an absolute 3.5 mL of oxygen per kg per minute, which is the energy expended when sitting quietly by a reference individual, chosen ...
where I is the intensity or strength of the stimulus in physical units (energy, weight, pressure, mixture proportions, etc.), ψ(I) is the magnitude of the sensation evoked by the stimulus, a is an exponent that depends on the type of stimulation or sensory modality, and k is a proportionality constant that depends on the units used.
As the intensity level of the activity being performed increases, breathing becomes faster; more steadily first and then more rapid as the intensity increases. When breathing surpasses normal ventilation rate, one has reached ventilatory threshold. For most people this threshold lies at exercise intensities between 50% and 75% of VO 2 max. A ...
Then the intensity is raised if desired. [4] [5] [6] The exercise can be any activity that can be titrated, such as walking, jogging, swimming, using exercise machines, and these may be mixed to add variety. Increasing the intensity can be more challenging than increasing duration, and a heart rate monitor may be employed to track intensity.
High-intensity interval training (HIIT) is a training protocol alternating short periods of intense or explosive anaerobic exercise with brief recovery periods until the point of exhaustion. [1] HIIT involves exercises performed in repeated quick bursts at maximum or near maximal effort with periods of rest or low activity between bouts.
Incremental exercise is also a prominent method utilised in determining results of exercise intensity. A type of incremental exercise test that assists in determining the intensity of exercise includes the talk test (TT). The talk test is a sub-maximal, incremental exercise test which allows individuals to recognise their exercise training ...