Physical Activity Versus Exercise: Is there a Difference?


Quite often a client will come into the gym discouraged with their exercise program. The common complaint being lack of results. They give a list of activities they are doing but still do not see any changes in physical appearance. Yes this can be attributed to many variables but one of the key elements to consider is intensity.

We need to ask, what constitutes exercise? Is all physical activity considered exercise? The answer is no. Unfortunately there is not a general number or percentage that can be given to state that an activity is exercise. Exercise should be defined as an activity that is harder than what you may do on a daily basis. And this definition is going to vary for all individuals. It will be specific to an individual's background, possible limitations and current fitness status. What may be considered an exercise for one person may not be for another. For instance if you usually go for a walk each night after dinner, then walking (at this pace) would be considered physical activity not exercise. If you ride your bike to work everyday, cycling (at this pace) is going to become physical activity for you and not exercise.

Let's explain.

When you first try an activity, it is new to you and your body feels challenged by this unknown stimulus. As you start performing this activity on a daily basis, your body starts to adapt and overtime it will become less challenging. The truth is that you are getting better at doing that activity and you don't need to work as hard. Yes, this is an indicator of some fitness improvement but soon those improvements will plateau. In other words, when this stimulus becomes familiar, the end result will be fewer calories burned and less stress on the body. In order for the body to alter its body composition and for you to see changes in your physical appearance, the body needs to be challenged. This is called the Overload Principle. This principle states that there needs to be a stimulus of higher intensity than usually performed to elicit any adaptations or changes. Without an overload or high enough intensity, the body is not going to change. If your body can get the job done in the status it is presently in, then it's not going to make extra effort to become stronger or leaner. Your body is concerned with survival not the latest bathing suit fashion.

So what do we prescribe for someone that is "working out" but not seeing the results they want?

First thing to suggest may be to change up their routine. It could be possible that they have been doing the same thing for so long that what was once a stimulus or exercise, no longer is. Instead of using the elliptical, why not try the treadmill, stationary bike or even roller blading? Instead of doing the same exercises like the seated chest press and cable row, why not do a cable chest fly or lat pulldown?

After changing the exercises you are performing, the next step is to appropriately progress the intensity. Your body will start to adapt to this new routine and we need to keep it guessing.

For aerobic training: A suggestion would be to work at an intensity that is challenging to you. When working aerobically an intensity closest to your anaerobic threshold will elicit the most adaptations. Try not to come into the gym and beeline to the elliptical day after day doing thirty minutes at level four. Your body will soon catch on to that intensity and you will end up burning less calories and causing minimal changes to your muscles. Those calorie counters on the machines should not be your guides. They are inaccurate and are used as a marketing tool to consumers. We all know someone or ourselves that stays on a machine until they burn a specific number of calories. That calorie counter is based on a 150 lb person with no consideration for their genetic makeup or current fitness status. Someone who is more fit will actually burn fewer calories! So lets use the talk test marker. You should be exercising to a point where you are struggling but an intensity where you can still have a winded conversation.

For anaerobic training:

Have you ever seen someone in the gym on the cable row doing repetition after repetition? They have probably completed about fifty and still do not look a bit fatigued. In order to see skeletal muscle changes we need to be working within the anaerobic energy system. In other words, working at a high enough intensity where your muscles fatigue.

The first step is to stay in the anaerobic energy system. A general rule would be completing a set between sixty and ninety seconds. If you were to perform the exercise for longer than ninety seconds, the anaerobic effect would be lost and minimal adaptations would occur. Most people are concerned with the number of repetitions that they are doing. What is most important is the time that the muscle is under tension.

The next step is the fatigue factor. Not only do we need to stay within a time limit, we also need to fatigue the muscle before the set is up. There are two options for fatigue: volitional or momentary muscular failure. Volitional fatigue, a fatigue more realistic for the general client, is a subjective fatigue where they chose to terminate the set when they feel they cannot perform another repetition. Momentary muscular failure, which elicits the most adaptations, is physical fatigue where the client cannot perform another repetition even if they tried.

The key to continual success with an exercise program is strategic variation along with the proper progression of intensity and exercises. Try to recognize what is considered physical activity and exercise in your program. There is a difference and will be reflective in your end results.

References:

Gardiner, P.. Neuromuscular Aspects of Physical Activity. Human Kinetics. 2001.

Katch F.I., V. L. Katch, W. McCardle. Exercise Physiology: Energy, Nutrition and Human Performance. Lippincott, Williams and Wilkins. Fourth Edition, 1993.

Teri Mosey is an Exercise Physiologist and Instructor for Health and Fitness Certifications.

Peak Performance Fitness
http://www.peakptfit.com







Related News



Fire training exercise held in Missoula - Montana's News Station

Fire training exercise held in Missoula
Montana's News Station, MT -1 hour ago
The owner of the house offered it to Missoula City Fire Department for training purposes and firefighters say the exercise is all part of an effort to ...
Walnut Ridge FD Getting Ready For Air Force MissionsKAIT
all 3 news articles

An exercise in damage limitation - guardian.co.uk

An exercise in damage limitation
guardian.co.uk, UK -17 hours ago
Today's success by Max Mosley in his privacy action against the News of the World represents the culmination of nearly a decade of steady development of ...

Sober days: Exercise is good way to manage stress, anxiety - The Desert Sun

Sober days: Exercise is good way to manage stress, anxiety
The Desert Sun, CA -Jul 24, 2008
I would like to start an exercise program now. Can you tell me how to go about this the right way? Answer: Starting a regular exercise program can be one of ...

The Fat of the Land - Wall Street Journal

Wall Street Journal

The Fat of the Land
Wall Street Journal -11 hours ago
The reason for all this is sad but true -- Australians eat too much and do not do enough exercise. For a country that produces such good quality food, ...

Exercise keeps heart young - Study - HealthJockey.com

HealthJockey.com

Exercise keeps heart young - Study
HealthJockey.com, India -Jul 24, 2008
A study conducted by the University in St. Louis revealed that endurance exercises can give one much younger hearts. “We know that the heart deteriorates as ...

Western Wind Energy Corp. announces filing of final short form ... - MarketWatch

Western Wind Energy Corp. announces filing of final short form ...
MarketWatch -1 hour ago
The Brokers' Warrants will be issued upon deemed exercise of special brokers' warrants (the "Special Brokers' Warrants"), which were issued as part of the ...

ASEAN forum endorses disaster relief exercise - Radio Australia

Boston Globe

ASEAN forum endorses disaster relief exercise
Radio Australia, Australia -Jul 24, 2008
Asia's top security forum has endorsed an American proposal for a region-wide disaster relief exercise. Disaster preparedness has risen high on the regional ...
Regional exercise to prepare for disastersStraits Times
Asian Nations To Pool ResourcesWall Street Journal
Asia-Pacific powers finalize ambitious plan to coordinate disaster ...International Herald Tribune
The Associated Press - Daily Times
all 146 news articles

The second X-Files movie is a strangely lifeless exercise - CBC.ca

CBC.ca

The second X-Files movie is a strangely lifeless exercise
CBC.ca, Canada -7 hours ago
By Jason Anderson, CBC News Fox Mulder (David Duchovny, left) and Dana Scully (Gillian Anderson) return to the big screen to investigate paranormal ...
Video: Duchovny, Anderson Believe in New X-Files FlickAssociatedPress
all 1,372 news articles

Dataline Announces Participation in Operation Golden Phoenix - MarketWatch

Dataline Announces Participation in Operation Golden Phoenix
MarketWatch -4 hours ago
Dataline is providing a vital, ad-hoc, secure mobile communications infrastructure for medical use during the exercise. NORFOLK, Va., July 25, ...

McCain Campaign, a Fact Checking Exercise - BuzzFlash

McCain Campaign, a Fact Checking Exercise
BuzzFlash, IL -6 hours ago
Senator McCain seems completely unaware that dozens, perhaps hundreds, of reporters and bloggers can check the accuracy of his statements in a matter of ...