Figure 4

Weight-bearing physical activities performed at worksite. Weight-bearing physical activity (hours/day) at worksite performed by Salvadorean women in each age group (25 – 35 years, n = 73; 36 – 49 years, n = 74; over 49 years, n = 50), subclassified by family history of osteoporosis (osteoporosis in family or no osteoporosis in family). Data are means ± SEM. Bars with distinct letters differ significantly (p < 0.05; Kruskal-Wallis' test followed by Dunn's test).