Work/rest cycle design... Using the heart rate data you collected and the resources on this page, address the following questions: a. How much rest allowance would be recommended after working for 2 hrs? Is a standard 10 minute rest enough? Work/Rest Cycles VO, Design work/rest cycles to counteract fatigue Rest portion of cycle provides opportunity to repay oxygen debt TABLE 7.7 Severity of Work in Terms of Vo, Heart Rate, and Energy Expenditure Heart Rate Energy Expenditure Work Severity beat min mins Baxal metabolism 0.25 Light work cos 10.5 Moderate werk 05.10 0-110 0521 Heavy work 10-15 110-110 23 Very heavy work 15.20 130-150 150 Extremely hey work 150-170 One method for calculating rest allowance: Rest allowance = w (b-sy/(br) Worth Soun: Modified from Asrand, PO and Rodahl K. 1977. Tubool Mew Hill New York Estimated value - where: wwlength of work period .boxygen uptake for job sustnd uptake for continuous work; 0.8-1 L/min, 4-5 kcal/min . r-resting uptake; 0.3 l/min, 1.5 kcal/min From Bridger, 4th edition (your textbook) Make this assessment for a standard' worker, rather than considering age, gender, or weight of the worker. Show your work. Your textbook provides an equation for estimating 'time to exhaustion' while a person is working and expending energy at a given relative level of energy expenditure (e.g. 20% of maximum oxygen consumption, or 45%, or...). b. What is the value of assessing this? Would you ever want to work someone to the point of exhaustion? Enter your response to 3b in this space Work/Rest Cycles Design work/rest cycles to counteract fatigue Rest portion of cycle provides opportunity to repay oxygen debt One method for calculating rest allowance: Rest allowance = w (b-s)/(b-r) - where: w=length of work period b=oxygen uptake for job sustnd uptake for continuous work; 0.8-1 L/min, 4-5 kcal/min r=resting uptake; 0.3 L/min, 1.5 kcal/min vo, TABLE 7.7 Severity of Work in Terms of Voy, Heart Rate, and Energy Expenditure Heart Rate Energy Expenditure Work Severity (l/min) beats/min) (kJ/min) Basal metabolism 025 Light work 105 Moderate work 0510 90-110 Heavy work 110-130 21-315 Very heavy work 1510 120-150 31542 Extremely heavy work 150-170 >42 10.5-21 Source: Modified from Astrand, P.O. and Rodahl, K. 1977. Textbook of Work Physiolog MeGraw-Hill, New York, Estimated value From Bridger, 4th edition (your textbook) t of the Work/rest cycle design... Using the heart rate data you collected and the resources on this page, address the following questions: a. How much rest allowance would be recommended after working for 2 hrs? Is a standard 10 minute rest enough? Work/Rest Cycles VO, Design work/rest cycles to counteract fatigue Rest portion of cycle provides opportunity to repay oxygen debt TABLE 7.7 Severity of Work in Terms of Vo, Heart Rate, and Energy Expenditure Heart Rate Energy Expenditure Work Severity beat min mins Baxal metabolism 0.25 Light work cos 10.5 Moderate werk 05.10 0-110 0521 Heavy work 10-15 110-110 23 Very heavy work 15.20 130-150 150 Extremely hey work 150-170 One method for calculating rest allowance: Rest allowance = w (b-sy/(br) Worth Soun: Modified from Asrand, PO and Rodahl K. 1977. Tubool Mew Hill New York Estimated value - where: wwlength of work period .boxygen uptake for job sustnd uptake for continuous work; 0.8-1 L/min, 4-5 kcal/min . r-resting uptake; 0.3 l/min, 1.5 kcal/min From Bridger, 4th edition (your textbook) Make this assessment for a standard' worker, rather than considering age, gender, or weight of the worker. Show your work. Your textbook provides an equation for estimating 'time to exhaustion' while a person is working and expending energy at a given relative level of energy expenditure (e.g. 20% of maximum oxygen consumption, or 45%, or...). b. What is the value of assessing this? Would you ever want to work someone to the point of exhaustion? Enter your response to 3b in this space Work/Rest Cycles Design work/rest cycles to counteract fatigue Rest portion of cycle provides opportunity to repay oxygen debt One method for calculating rest allowance: Rest allowance = w (b-s)/(b-r) - where: w=length of work period b=oxygen uptake for job sustnd uptake for continuous work; 0.8-1 L/min, 4-5 kcal/min r=resting uptake; 0.3 L/min, 1.5 kcal/min vo, TABLE 7.7 Severity of Work in Terms of Voy, Heart Rate, and Energy Expenditure Heart Rate Energy Expenditure Work Severity (l/min) beats/min) (kJ/min) Basal metabolism 025 Light work 105 Moderate work 0510 90-110 Heavy work 110-130 21-315 Very heavy work 1510 120-150 31542 Extremely heavy work 150-170 >42 10.5-21 Source: Modified from Astrand, P.O. and Rodahl, K. 1977. Textbook of Work Physiolog MeGraw-Hill, New York, Estimated value From Bridger, 4th edition (your textbook) t of the