Dysmobility and Aging: From Clinical Dysmobility to the Movement-Time Theory

The objective of this chapter is to present the Movement-Time Theory (or Dysmobility Theory), a theory that seeks to explain the aging process. The ways in which stochastic and non-stochastic theories explain aging are reviewed, and the relationships between movement, movement disorders, and aging are analysed. Subsequently, the initial part of the Movement-Time Theory is presented: four foundations, a new definition of aging, and seven characteristics that circumscribe aging. Based on these characteristics, the questions ‘what is aging’, ‘when do we start to age’, ‘how do we age’, and ‘why do we age’ are addressed. Then, the final part of the theory is presented, explaining the associated concept of minimum necessary movement and the equation that summarises the theory. Finally, the question of how this new theory impacts clinical practice is considered.