Final answer:
The assertion that lower training intensity and volume decreases endurance and lactate threshold is false. Endurance training can lead to improved capillary density and mitochondrial function in muscles, while lactate accumulation is not the only factor contributing to fatigue. Individual genetics also play a significant role in determining endurance capacity.
Step-by-step explanation:
The statement is FALSE: lower training intensity and volume does not necessarily lead to decreased endurance exercise performance and reductions in lactate threshold. Rather, endurance training induces various physiological adaptations like increased capillary density and mitochondrial content in skeletal muscles. This is distinct from resistance training, which focuses more on muscle mass and strength by increasing connective tissue and strengthening tendons. Lactate, often associated with muscle fatigue, is a by-product of intense exercise, but its accumulation isn't solely responsible for fatigue. Different factors contribute to fatigue, and training can improve the efficiency of anaerobic activity.
It's also important to acknowledge that individual responses to aerobic exercise can vary significantly, with genetic factors influencing the proportion of slow-twitch and fast-twitch muscle fibers. People with a higher percentage of slow-twitch fibers, which are better equipped for oxygen transportation and prolonged aerobic activity, may exhibit greater endurance enhancement following aerobic exercise compared to those with more fast-twitch fibers.