Patterns of leisure-time physical activity across pregnancy and adverse pregnancy outcomes

Table 1 Counts of most frequent activities reported by nuMoM2b study visit^a

Activity (METs)	Visit 1	Visit 2	Visit 3	Across visits
Activity (METs)	6 to < 14 wks (N = 10,016)	16 to < 22 wks (N = 9408)	22 to < 30 wks (N = 9215)	Across visits
Walking (3.5)^b	5364	5554	5390	16,308
Aerobics class/Exercise machines (5.5)	1393	1255	1107	3755
Yoga (3.0)	825	1098	1107	3030
Weight lifting (3.5)	651	624	497	1772
Running(8.0)^b	697	481	215	1393
Swimming (7.0)	383	350	390	1123
Cycling (7.5)^b	400	314	197	911
Calisthenics/Home or Gym Exercise (4.0)	277	264	212	753
Hiking/Backpacking (6.5)	154	132	102	388
Dancing (5.0)	148	125	77	350
Gardening (3.8)	117	76	61	254
Stair climbing (6.4)	48	58	52	158
Tennis (7.3)	37	26	11	74
Volleyball (4.0)	42	21	11	74
Judo/Karate/Tae Kwon Do (7.8)	26	21	22	69
Softball/baseball (5.0)	33	22	6	61
Basketball (6.5)	30	15	11	56
Sledding/Tobogganing (7.0)	29	24	2	55
Soccer/Badminton/Racquetball (7.0)	33	12	4	49

^aStudy visits occurred in time according to the gestational age of participants
^bFor walking, jogging, running, and cycling, METs were based on speed when distance and duration were provided. Assigned values are shown below
Walking
no speed (general) = 3.5 METs
< 2.0 mph = 2.0 METs
2.0–2.4 mph = 2.8 METs
2.5–2.7 mph = 3.0 METs
2.8–3.5 mph = 3.5 METs
3.6–4.2 mph = 5.0 METs
4.3–4.9 mph = 7.0 METs
≥ 5.0 mph = 8.3 METs
Jogging/Running
jogging no speed (general) = 7.0 METs
running no speed (general) = 8.0 METs
< 4.9 mph = 6.0 METs
5.0–5.9 mph = 9.0 METs
6.0–6.9 mph = 11 .0 METs
7.0–7.9 mph = 11.5 METs
8.0–8.9 mph = 12.0 METs
9.0–9.9 mph = 12.8 METs
≥ 10 mph = 15.0 METs
Cycling
no speed (general) = 7.5 METs
< 6.0 mph = 3.5 METs
6.0 - 9.9 mph = 5.0 METs
10.0 - 11.9 mph = 6.8 METs
12.0 - 13.9 mph = 8.0 METs
14.0 - 15.9 mph = 10.0 METs
16.0 - 19.9 mph= 12.0 METs
≥ 20.0 mph = 15.8 METs

ISSN: 1479-5868