Resource intensification and osteoarthritis patterns: changes in activity in the prehistoric Sacramento-San Joaquin Delta region.

摘要: Ethnohistoric accounts and archaeological research from Central California document a shift the use of lower-cost, high-ranked resources (e.g., large game) toward greater higher-cost, low-ranked acorns small seeds) during Late Holocene (4500-200 BP). The subsistence transition higher consumption game an increased reliance on was likely associated with increases in levels logistical mobility physical activity. This study predicts that overall workload patterns changed this to accommodate new food procurement strategies incorporate dietary California.Osteoarthritis prevalence scored shoulder, elbow, hip, knee adult individuals (n = 256) seven sites Sacramento-San Joaquin Delta region. Comparisons were made between osteoarthritis prevalence, sex, age-at-death, time period using ANCOVAs.The results indicate significant hip males females Period (1200-200 BP), even after correcting for cumulative effects age. No differences observed sexes or periods joints.The temporal increase supports hypothesis there increasing need over procure key away village sites. Additionally, lack sex may suggest performed similar activity these periods.