Responses of the musculoskeletal and energy systems to a single bout of exercise P1 The musculoskeletal system is two system combined. The first system is the skeletal system. The skeletal system consists of bones, ligaments and cartilage. When doing excercise,our body makes our joints move smoothly by Synovial fluid keeps your joints healthy by providing nourishment for the articular cartilage in your weight-bearing joints.
A regular weight bearing excerise routine for example running or resistance , stimulates bone-building cells called osteoblasts to lay down new bone material which make our bones stronger and more dense. The other system is the muscular system. Muscles respond to overload. By working your muscles greater than normal, they become stronger and more resistant to fatigue. exercise such as resistance training can increase the strengh of your muscles while aerobic excercise such as running can will improve muscular endurance.
Energy systems response to acute exercise happens when the exercise is a high intensity. The first response is to use the creatine phosphate energy system. This works in the fast-twitch muscle fibre of the muscles high energy creatine phosphate compounds which are able to break down extremely quickly to create large amounts of ATP. ATP is where we get the energy from to continue and this system only works for the first 10 to 20 seconds of exercise with 100% effort. lactic acid system would provide energy at the start of any activity, even if the intensity is not enough for the aerobic system.
If you go out on a jog, most of this is powered by the aerobic system, but the start of the jog is needs to create ATP so that the heart and lungs have enough oxygen and can saturate the blood before the aerobic system can kick in. When the heart and lungs have caught up with the movement of the activity and the intensity is low enough, then the aerobic energy system can fuel the body. In bas scenarios, such as an overweight person trying to walk up the stairs, the unfit person cannot supply enough oxygen to their body with the aerobic system.
This may require an extreme amount of effort for the individual, so they would have to use the anaerobic system without a choice. This would cause them high heart and breathing rates, they would have to take recovery periods and would produce lactic acid, as a part of anaerobic energy production. Cardiovascular and respiratory systems respond to a single bout of exercise. P2 The Cardio-respiratory system consists of your heart, lungs and blood vessels. These organs work together to ensure your muscles receive sufficient amounts of life-giving oxygen.
Exercise increases your need for oxygen so, while you exercise, the cardio-respiratory system must work harder than normal. Your heart rate, blood pressure and breathing rate all increase during exercise but return to normal when you stop. In the long term, your heart and respiratory muscles get stronger and your blood becomes better at carrying oxygen around your body. A repeated amount of exercise also causes your body to make new thread-like veins called capillaries so that more oxygen can be delivered to your working muscles. Regular exercise can also result in a significant drop in resting blood pressure aswell.