A study of life and health conditions of inhabitants of Manabe Island. Part 2. Physical load of fishermen and farmers.

Questionaires on subjective symptoms of fatigue and Donaffio reaction tests were conducted with fishermen and farmers. The results were as follows: 1. Of symptoms described on questionaires, eyestrain, wish to lie-down, loss of memory, and stiff-shoulder were higher in frequency among male fishermen, and stiff-shoulder was higher in frequency among female fishermen after work. Those having tired legs' wish to lie-down, and low back pain were of high frequency in both male and female farmers after work. Additionally in female farmers, stiff-shoulder was a frequent complaint. 2. Acute Donaggio values in urine showed a statistically significant increase in male fishermen. Actual Donaggio values and those values corrected for 1024 in urine showed statistically significant increases in female farmers.