Question

In order to study how fatigue affects our working capacity, Mosso designed

• A. Chronocyclegraph
• B. Electrocardiogram
• C. Finger ergograph
• D. Cyclegraph

Hint:

Ergonomic Instruments:
Mosso $\rightarrow$ Finger Ergograph (Fatigue).
Gilbreth $\rightarrow$ Cyclegraph Chronocyclegraph (Motion study).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Ergonomics and work physiology measure muscular fatigue and work performance capacity using specialized physiological recording instruments.

Step 2: Detailed Explanation:
In 1890, Italian physiologist Angelo Mosso designed the Mosso's Ergograph (Finger Ergograph):
- The instrument secures the forearm while the subject repeatedly contracts the middle finger against a specified weight attached to a pulley system.
- A writing stylus records each contraction height onto a rotating smoked drum kymograph, producing an 'ergogram' that graphically visualizes the onset, rate, and recovery curve of muscular fatigue.

Step 3: Final Answer:
Thus, Mosso designed the Finger ergograph, matching option (C).