Which option lists factors affecting fatigue as given in the material?

Which option lists factors affecting fatigue as given in the material?

• A. VO2 max, anaerobic threshold, specificity, FITT
• B. Fuel, time, electrolytes, fluid, DOMS, OBLA
• C. Fatigue only depends on psychological factors
• D. The weather and temperature only

Answer: (B)

Fatigue during exercise comes from several interacting factors, not just one cause. The factors listed—fuel, time, electrolytes, fluid, DOMS, and OBLA—cover the main ways fatigue can develop: fuel refers to energy availability and stores in the body; time reflects the duration of activity; electrolytes and fluids relate to hydration and chemical balance important for nerve and muscle function; DOMS represents muscle soreness from prior or intense activity that can reduce force production; and OBLA marks the point where lactate buildup accelerates, leading to acidosis and a drop in performance. The other options either focus on training principles or on factors that don’t broadly describe fatigue per the material (for example, psychology alone or weather alone).

Fatigue during exercise comes from several interacting factors, not just one cause. The factors listed—fuel, time, electrolytes, fluid, DOMS, and OBLA—cover the main ways fatigue can develop: fuel refers to energy availability and stores in the body; time reflects the duration of activity; electrolytes and fluids relate to hydration and chemical balance important for nerve and muscle function; DOMS represents muscle soreness from prior or intense activity that can reduce force production; and OBLA marks the point where lactate buildup accelerates, leading to acidosis and a drop in performance. The other options either focus on training principles or on factors that don’t broadly describe fatigue per the material (for example, psychology alone or weather alone).