JONES AGAIN

The lactate responses to incremental exercise, particularly the lactate threshold (LT), correlate strongly with various types of endurance performance. LT, however, possesses some disadvantages, such as

• A scarce number of methods to identify LT

• The need for a "subjective" identification of LT

• The influence of external factors, such as CHO ingestion

• All options (combination of A, B, and C) are correct

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NGSS.HS-LS2-3

The relationship between power output and the time for which it can be sustained is better described by

• A hyperbolic curve

• A sigmoidal curve

• A parabolic curve

• An exponential curve

The amount of work that can be done during exercise above critical power is termed as

• W′

• D'

• CP

• All options (combination of A, B, and C) are correct

In an exercise intensity below the critical power, it could be expected

• Absence of an accentuated slow component of pulmonary oxygen uptake (VO2)

• Relatively stable blood lactate concentrations

• Relatively stable muscle phosphocreatine levels

• All options (combination of A, B, and C) are correct

In an exercise intensity above the critical power, it could be expected

• Presence of an accentuated slow component of pulmonary oxygen uptake (VO2)

• Relatively stable blood lactate concentrations

• Relatively stable muscle phosphocreatine levels

• All options (combination of A, B, and C) are correct

The power–time relationship is fundamental in exercise physiology because

• It offers a framework for exploring and understanding skeletal muscle bioenergetics and the metabolic and cardio-respiratory responses to exercise

• It provides a powerful tool for fitness diagnostics and monitoring the physical impact of different types of interventions

• It provides performance prediction in continuous high-intensity endurance exercise

• All options (combination of A, B, and C) are correct

The process of fatigue development during severe-intensity exercise may be linked to

• The reduced recruitment of type II muscle fibers

• The reduced muscle efficiency

• The increased concentration of blood lactate

• The stability of muscle substrates and metabolites

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NGSS.HS-LS2-3

According to Joyner's model, three main factors play a role in endurance performance. These factors are

• VO2max, "lactate threshold", and "efficiency"

• VO2max, "efficiency", and maximal speed

• "lactate threshold", "efficiency", and maximal speed

• "lactate threshold, "maximal speed, and anaerobic reserve

According to Joyner's model, "efficiency" interacts with the performance to establish

• The speed or power that can be generated at this oxygen consumption

• The speed or power that can be generated without any increase in blood lactate concentrations

• The oxygen consumption that can be sustained for a given period of time

• The oxygen consumption that can be sustained for an infinite time

The exercise intensity can influence the development of fatigue. During exercise at a severe domain, for example, a common responses is

• Loss of efficiency

• Reduced accumulation of fatigue-related metabolites

• Reduced glycogen depletion

• All options (combination of A, B, and C) are correct