What is the recommended method to establish exercise intensity?

The recommended method to establish exercise intensity among the provided options is the BORG scale. The BORG scale, also known as the Rating of Perceived Exertion (RPE) scale, is widely recognized in the fitness and exercise science community for assessing how hard a person feels they are working during physical activity. It allows individuals to gauge their exertion levels based on personal perception, which can vary significantly from person to person.

Using the BORG scale is advantageous because it accounts for the subjective nature of exercise intensity, which can be influenced by various factors including fitness levels, fatigue, and environmental conditions. The scale usually ranges from 6 to 20, with lower numbers representing very light activity and higher numbers indicating maximum effort. This subjective measurement can help guide exercise intensity appropriately, taking into consideration the individual's current fitness level and overall health.

In contrast, heart rate monitoring, while also an effective method, can sometimes present challenges such as delayed response to intensity changes, individual variations such as medication effects, or errors from improper device use. Duration of exercise indicates time spent but does not directly provide insight into how intensely the body is being worked during that time. Body language interpretation lacks the objectivity and clarity that standardized scales provide, making it less reliable for