362 CONARD ACCOMMODATION 1959 VISUAL AEUITY : EXPOSED ' * © UNEXPOSED 2» MEAN BOTH GROUPS | Obs mb ces ee +12 30 -% 40°- 62 60 oO —_ -3 : 2 30 . . . 40 SO ecm 60 AGE - YRS Figure &. mero 7a - 70 ARTERIOSCLEROSIS RETINA 100 -- . “20/40 & ~20/80 cu & t > noe 20 30 of: 40 30 wre 60 8 70 7207200 80 . Figure 11. ~ 1959 » EXPOSED —4 o . 20—f— Lae 239, ‘28,. 30S wy ywt3 30° | . z * % Loy <2 30 . | ee , | @ , 4190 ; | | | 50 60 AGE - YRS Figure 9. 90 23 APRCUS SENILIS Ee I 1 -. 90 — 79 ' 69 59 — 49 a5- 20 “ ae ne 2 meee n 1989 . 49 50 60 AGE - YRS © # EYPOSED * © UNEXPOSED 7 | ade | we BLOOD PRESSURE -SYSTOLIC ae ! 338 100 - - > FEXPOSED « sUNEXPOSED t 2 sMEAN BOTH GROUPS! : . 4230 > g0-80°- 70. . ' | 195 , . . -* MEAN BOTH GROUPS I ' {mm) — 160 4125 , | oe "4 le eww ett a gt ee ge ~ “Reeves” ~ ™ _. Figure 10. J 80 a Figure 12. ys oe a 3% 3 Sg , | 8 - . gO 7O 100 ~ 429 0 a 4 ‘19 a ° gO - -O 0 7 7. 7O-- ai ! 5 ONexbos ® ® UNEXPOSED @ «MEAN BOTH GROUPS * ���. 60 1989 HEARING LOSS IO 5, —3+ 40 a AGE - YRS 80 - > MEAN BOTH GROUPS 30 wl ! ‘ ? + » UNEXPOSED 20 li ~20n00 5 a0 90° : 2 420/20 Z ~230 2 50 —- 100 — 00 — . 20/10 8 loporno ST imi aS 20- se ~Q 2 w w oo. ‘ expose ie e 2 IMRANBOTHGROUPS. ' Hand strength was measured by a Smedly hand dynamometer.* The spring tension of the hand grip was measured in kilograms. The maximum squeeze strength in the dominant handin three tries was recorded. Due to sex differences, the following criteria described above were evaluated separately for the two sexes: baldness, neuromuscular func- tion. and handstrength. *C. H. Stoelting Company, Chicago, I. . 25 30 40 30 60 AGE = YRS 70 oo4 | 1990 60 Figure 13. In order that the estimated and measured data could be compared and combined, both types of data were converted to a percentage scale. The estimated values of 0, 1+, 2+, 3+, and 4+ were thus presented also as 0, 25, 50, 75 and 100%, respectively. The measured data were similarly handled. Thus the values associated with least aging were chosen as 0% (sometimes the highest reading, as with hand strength; sometimes the lowest, as with hear-

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