The pandemic caused by the coronavirus disease, caused changes in the population in relation to the habits of physical activity and sports practice. If to this we add the work situation and the care or not of children during the lockdown, the routines of sport practice can be reduced, with the risk that this entails to health. This study analyzed motivation, commitment and self-efficacy in relation to sport practice as well as the differences depending on the employment situation and the care or not of children, during the lockdown. The study sample was conformed of 179 subjects (90 men and 89 women) between 18 and 65 years of age (M = 28.64; SD = 10.28). The Behavioral Regulation in Sport Questionnaire (BRSQ), the Psychological Need Satisfaction in Exercise Scale (PNSE), the Physical Activity Self-Efficacy scale and the Sport Commitment scale, were applied. The most relevant results have showed significant differences in favor of the population that studies and works in terms of levels of autonomous motivation and amotivation, as well as higher levels of self-efficacy, basic psychological need of competence and commitment to sport practice. However, no significant differences were found depending on the care or not of children. It is interesting that the people who study and work were the most involved with the sport practice during the lockdown. Therefore, the results will be discussed in relation to how, the basic psychological need of competence, should be fostered in order to increase the levels of self-determined motivation, self-efficacy and commitment to sports practice of the entire population.