@book{oai:chikyu.repo.nii.ac.jp:00000560,
 author = {Yamauchi, T and Onishi, H and Phonepadith, X and VANHAMANI, Monely},
 month = {Sep},
 note = {application/pdf, Objective: To estimate the daily physical activity level (PAL) of traditional rice farmers in rural Lao PDR during a post-harvest season.

Design: Cross-sectional study.

Setting: A rice-farming village in Savannakhet Province, Lao PDR.

Subjects: 12 husband/wife pairs.

Interventions: Resting energy expenditure (REE) while sitting was measured by indirect calorimetry, and anthropometric indices were recorded. The total daily energy expenditure (TEE) and daily step frequency (STP) were estimated by accelerometry. PAL values were derived from TEE and REE values.

Results: The mean REE (kcal/day) was significantly (P < 0.0001) higher for men (1,899 ± 227) than for women (1496 ± 139). The difference between men and women was reduced when adjusted for body weight by an analysis of covariance and became non-significant after adjustment for fat-free mass. The mean PAL values of the subjects were relatively low (1.77 and 1.71 for men and women, respectively) compared with those of ricefarming populations observed during intensive agricultural seasons. A significant negative relationship was found between the physical activity indices (TEE and STP) and the percentage of body fat, but not between these indices and the body mass index (BMI).

Conclusions: PAL values of Lao rice farmers were relatively low during the post-harvest season. A better understanding of their behavioral and energetic adaptations will require estimates of both time allocation and energy expenditure. Maximization of food security will require surveys of physical activity, diet, and nutritional status during intensive agricultural seasons, which are associated with high PAL values and a negative energy balance.},
 publisher = {総合地球環境学研究所　研究プロジェクト4-2},
 title = {Resting energy expenditure and physical activity level of rice farmers in Lao PDR during the post-harvest season},
 year = {2006}
}