Tuesday, August 26, 2014

Being Fit Keeps You Mentally Ready For Work

We keep hearing about how obesity can be a dangerous risk to your physical health, but according to a study from Israel in the Journal of Applied Psychology, avoiding exercise can also take a toll on your mental health, leading to depression and greater burnout rates at work.

Researchers found that employees who engaged in physical activity were less likely to experience a deterioration of their mental health, including symptoms of burnout and depression. The best benefits were achieved among those exercising for four hours per week – they were approximately half as likely to experience deterioration in their mental state as those who did no physical activity.

Depression is a clinical mood disorder, and burnout is defined by physical, cognitive, and emotional exhaustion. Both contribute to a possible “spiral of loss” where the loss of one resource, such as a job, could have a domino effect and lead to the loss of other resources such as one’s home, marriage, or sense of self-worth.

The study was originally designed to examine the relationship between depression and burnout by assessing the personal, occupational, and psychological states of 1,632 healthy workers in both the private and public sectors. Participants completed questionnaires when they came to medical clinics for routine check-ups and had three follow-up appointments over a period of nine years.

The results indicate that an increase in depression predicts an increase in job burnout over time, and vice versa. But for the first time, the researchers also considered the participants’ levels of physical activity, defined as any activity that increases heart rate and makes you sweat. The participants were divided into four groups: one that did not engage in physical activity; a second that did 75 to 150 minutes of physical activity a week; a third that did 150 to 240 minutes a week; and a fourth that did more than 240 minutes a week.

Depression and burnout rates were clearly the highest among the group that did not participate in physical activity. The more physical activity that participants engaged in, the less likely they were to experience elevated depression and burnout levels during the next three years. The optimal amount of physical activity was a minimum of 150 minutes per week, where its benefits really started to take effect.  In those who engaged in 240 minutes of physical activity or more, the impact of burnout and depression was almost nonexistent. But even 150 minutes a week will have a positive impact.

Exercise and being fit helps people to deal with their workday, improving self-efficacy and self-esteem, and preventing the spiral of loss.  Most stress management programs focus on reducing stressful situations such as workload and the environment. However, as successful as these might be, life still throws us some stressful situations to deal with.  Being fit and exercising regularly is the best way to be prepared as the Scouts would say.

You can’t, and don’t want to, remove all stress from your life (only dead people have no stress), but being fit is your best defense against the negative effects of stress.

Wednesday, August 20, 2014

The Myth About the Fat-Burning Zone

The body does burn a higher percentage of calories from fat in the "fat burning zone" (60-65% of your maximum heart rate). However, at higher intensities (70-90% of your maximum heart rate), you burn a greater number of overall calories, which is what ultimately matters when it comes to losing weight. The chart below details the fat calories expended by a 130-pound woman during "cardio" exercise. 

As you can see, lower intensity workouts will burn half of the total calories from fat stores in your body, rather than from muscle or sugar.  However, high intensity workouts yield more calories burned per minute.  Additionally, the excessive post-exercise oxygen consumption (epoc) is higher after high-intensity workouts, leading to increased metabolism and prolonged breakdown of fat stores. 

So, even though it is harder to work out at higher intensitites, wouldn't you rather make every minute count AND increase your chance of prolonged fat breakdown?  Try it ... create the crave for harder workouts!

Low Intensity - 60-65% MHRHigh Intensity - 80-85% MHR
Total Calories expended per min.4.866.86
Fat Calories expended per min.2.432.7
Total Calories expended in 30 min.146206
Total Fat calories expended in 30 min.7382
Percentage of fat calories burned50%39.85%
Source: From The 24/5 Complete Personal Training Manual, 24 Hour Fitness, 2000

Tuesday, August 19, 2014

For those who say they don't believe:

Many of my clients, jokingly or not, say they don't believe that I was very overweight.  For those of you who have either said it to my face, behind my back or in your heads, here's proof.  I'm proud of the hard work and determination I have exhibited throughout my physical transformation.  I'm also blessed that I still feel like that happy, young mommy that I did 3 years ago.  I'm actually more complete of a person now, I think. I hope to portray that confidence, character, hopefulness and happiness to my clients, friends and family every day, no matter how I look on the outside.



 
Left: 168 lbs.          Right: 118 lbs
Body Fat %: 32       Body Fat %: 12