Physique and Effort Syndrome
1. An anthropometric investigation of 200 soldiers suffering from effort syndrome revealed that the group as a whole was significantly more leptosomatic in body-build than a comparable control group.

2. The proportion of leptosomes was significantly greater and the proportion of pyknics significantly smaller than in the normal group.

3. Comparison of the aetiological factors in the leptosomatic and pyknic effort syndrome groups showed striking differences, indicating marked constitutional predisposition in the leptosomatic group as shown by family history, long-standing symptoms of effort intolerance, vegetative disequilibrium, hypochondriasis and general neuroticism. The pyknic group on the other hand showed little evidence of constitutional predisposition; the illness was usually of comparatively short duration and mainly determined by exogenous factors.