0162 Activity restriction (AR) during bed rest (BR) has been shown to have numerous physiological side effects in the non-pregnant population. However, to date there has been no research investigating the physiological characteristics of activity-restricted women with high-risk pregnancies who are bed-rested in hospital. PURPOSE: The purpose was to provide descriptive data regarding activity level, energy intake, capillary glucose, and ketones in AR hospitalized high-risk pregnant women. METHODS: Pedometer step count, energy intake, fasting (F) and 1-h post-prandial (PP) capillary glucose (G) and ketones (K) were evaluated over 7 d in high-risk pregnant women in hospital (n = 16). All subjects were in the 3rd trimester (30.8±4.5 rd weeks; mean±SD), and had been BR for at least 3 d (21.7±19.3 d). RESULTS: Daily step total (ST) was 1579±936 steps (mean±SD). ST ranged from a minimum of 309±94 to 3725±1141 steps per d, and was divided into time periods: Bed-8am (109±83 steps), 8am-12pm (458±362 steps), 12pm-5pm (612±382 steps), and 5pm-Bed (393±343 steps). Daily FG and PPG were 5.20±1.79mmol/L, and 7.36±1.68mmol/L respectively. Excluding women with gestational diabetes (GDM), FG and PPG values were 4.64±0.46mmol/L, and 7.10±0.95mmol/L respectively (n = 14). Values for FG and PPG in women with GDM were 7.15±3.83mmol/L, and 8.02±3.47mmol/L respectively (n = 2). The mean FK value was 0.06±0.19mmol/L. Daily energy intake was 2501±585kcal. CONCLUSION: AR pregnant women in hospital are less active compared to the recommended 10,000 steps a day for health benefits (Hatano, 1997), and have energy intakes similar to the recommendations for third trimester women (2500kcal) (Am. Diet. Assoc., 2000). However, AR in hospitalized pregnant women without GDM does not appear to increase the risk of hyperglycemia.