Final answer:
To apply the principle of progression, Jose should gradually increase the duration and possibly the intensity of his walking sessions each week, eventually moving toward daily walks and adding exercises that build endurance and strength.
Step-by-step explanation:
The principle of progression in fitness entails gradually increasing the intensity or duration of physical activity to improve fitness levels without incurring injury. For Jose, who walks briskly for at least 15 minutes, four days a week and is preparing for daily three to four-hour marching band practices, the best way to apply the principle of progression would be to incrementally increase both the duration and perhaps the intensity of his walking sessions over the six weeks leading up to his band practices.
Starting with his current routine, he might add an additional five minutes to his walk each week and include one more day of walking, progressing to daily walks. As time goes on, he could introduce variations to his routine such as walking at a faster pace, incorporating interval training, or adding resistance exercises. This approach will allow his body to adapt to the increased demands of the upcoming marching band practices and improve his endurance, strength, and overall fitness.
Consistency and gradual increases are key to effectively implementing the principle of progression in his fitness plan.