“…In one paper, there was a suggestion that PA intensity could be increased by encouraging more PA before pregnancy ( 40 ). Low education ( 32 , 35 , 36 , 43 , 46 , 54 ), first parity ( 29 , 36 , 43 ), lack of knowledge and skills ( 27 , 33 , 44–46 , 53 , 55 ), pregnancy symptoms ( 25 , 27 , 28 , 32 , 33 , 35 , 43 , 44 , 51–53 , 55 ), lack of time ( 25 , 27 , 33 , 39 , 44 , 53 ), low income ( 27 , 33 , 39 , 45 , 51 , 53 ), lack of motivation/goal ( 25 , 51 , 53 , 55 ), and safety concerns ( 25 , 27 , 29 , 31 , 33 , 34 , 44–46 , 49 , 51 , 53 , 55 ) were all identified by the researchers as barriers. The lack of time mainly came from family commitments ( 44 ), while low education, first parity, and lack of knowledge and skills were all related to safety concerns.…”