Key concepts and definitions for the study questions
| Concept | Definition |
| Breastfeeding women | Breast feeding is when the child receives breastmilk directly from the breasts and the following types are considered: exclusive breast feeding, breast feeding in combination with fluids, complementary breast feeding (breast feeding in combination with solids or semisolid).26 |
| Sexuality | This included a broad perspective with some conceptual elements of the WHO definition.27 In which, biological and psychosocial aspects are considered. |
| Biological aspects | Consider the interaction of prolactin and oxytocin with female sex hormones including oestrogen and progesterone. |
| Psychosocial aspects of sexuality | It considers the intrapsychic and social aspects of the sexual response of women who breast feed, including depression, body image, fatigue, sleep deprivation and parental tasks. |
| Female sexual performance | It is a component of sexual behaviour that is a consequence of the relationship between hormonal actions in the brain, sexual arousal and expectations of sexual competence that results in the performance of the individual.28 |
| Sexual dysfunction | Involves a group of disorders that are typically characterised by clinically significant disorders in a person’s ability to respond sexually or experience sexual pleasure.1 These disorders affect the dimensions of desire, excitement, lubrication, orgasm, satisfaction and pain.29 |