Case Study: Muscular Fitness Assessment and Exercise Prescription is a 40-year-o
ID: 3513594 • Letter: C
Question
Case Study: Muscular Fitness Assessment and Exercise Prescription is a 40-year-old biology professor who teaches at the university and ld weighs 180 does research on cellular aging of skeletal muscle in dogs. Haro lb (81.6 k household or yard maintenance. chess, reading, and playing classical guitar. For physical exercise puts the garbage out on Monday, presses remote control buttons for the home entertainment center, swipes rides his bicycle to work (2 miles [3.2 km] round-trip) 5 days per week. His research on aging prompted concern about his own muscular fitness. He contacted you to assess his strength and to design a resistance training program to increase his strength in an attempt to retard the degeneration of his muscular system. The results of his strength assessment were as follows: 9). He recently purchased a new townhome that requires very little His primary recreation consists of playing he regularly through the screens on his smartphone, and Test item 1. Bench press 2. Arm curl 3. Lat pull-down 4. Leg press 5. Leg extension 6. Leg curl 1-RM 100 lb (45.4 kg) 60 lb (27.2 kg) 10 lb (49.9 kg) 300 lb (136 kg) 95 Ib (43 kg) 60 lb (27.2 kg)Explanation / Answer
1. Strength can be calculated using the formula
1-RM = (0.033 x repetitions x load) + load
Here, repetitions = 1 and the load calculated would be strength.
45.4 = (0.033 x 1 x load) + load
45.4 = 1.033 x load
Load = strength = 43.9496 Kg
27.2 = (0.033 x 1 x load) + load
27.2 = 1.033 x load
Load = strength = 26.331 Kg
49.9 = 1.033 x load
Load = strength = 48.3059 Kg
136 = 1.033 x load
Load = strength = 131.655 Kg
43 = 1.033 x load
Load = strength = 41.626 Kg
27.2 = 1.033 x load
Load = strength = 26.331 Kg
2. Overall strength can be calculated using
Sum of 1- RMs = (0.033 x 1 x load) + load
328.7 = 1.033 x load
Load = strength = 318.199 Kg
3. Weakest muscle groups are the ones that have the least 1- RM. Hence, the muscles involved in arm curl and leg curl are the weakest. The muscle groups include hamstrings, calves (for leg curl) and brachialis, deltoid muscle, wrist extensors, flexors (for leg curl) which are the weakest.
4. The strongest muscle group is the one which has the highest 1-RM. It includes muscles that are involved in leg press. The muscle group includes quadriceps, soleus and gastrocnemius, gluteus maximus, hip adductors which are the strongest.