ConsumersAdvocate.org has an article comparing and contrasting some of the available fitness trackers:
HOW WE FOUND THE BEST FITNESS TRACKERFEATURES
We checked for fitness trackers with diverse features that users could choose to best match their lifestyle and goals. This includes multiple health and activity monitoring options.
Many fitness trackers sync with smartphones or Bluetooth to receive calls, get message notifications, and send data to their corresponding fitness apps. We looked at trackers that were easy to connect.
Regular fitness trackers can range from $50 to $200, while hybrid smartwatches can cost over $400. We compared prices to special features to make sure consumers get the most out of their investment.
Fitness trackers should be durable, lightweight, and comfortable. We interviewed customers and read dozens of reviews and testimonies for thorough feedback on each product.
Didn’t we already know this? The study at hand involved 10 overweight young men.
Insulin is a blood-borne hormone that the pancreas gland secretes in order to keep blood sugar levels from getting too high. (Insulin does many other things, but table that for now.) Insulin triggers certain body cells to absorb glucose from the bloodstream. “Insulin resistance” means that these cells don’t respond to insulin as well as they should, so either the pancreas secretes even more insulin (hyperinsulinemia) or blood sugar levels rise. Insulin resistance is a harbinger of type 2 diabetes mellitus. Most overweight or obese type 2 diabetics have insulin resistance. Many experts think hyperinsulinemia causes disease by itself, regardless of blood sugar levels. So it may be best to avoid insulin resistance and hyperinsulinemia.
The aim of the study was to investigate the effects of 6 weeks of resistance exercise training, composed of one set of each exercise to voluntary failure, on insulin sensitivity and the time course of adaptations in muscle strength/mass. Ten overweight men (age 36 ± 8 years; height 175 ± 9 cm; weight 89 ± 14 kg; body mass index 29 ± 3 kg m−2) were recruited to the study. Resistance exercise training involved three sessions per week for 6 weeks. Each session involved one set of nine exercises, performed at 80% of one‐repetition maximum to volitional failure. Sessions lasted 15–20 min. Oral glucose tolerance tests were performed at baseline and post‐intervention. Vastus lateralis muscle thickness, knee‐extensor maximal isometric torque and rate of torque development (measured between 0 and 50, 0 and 100, 0 and 200, and 0 and 300 ms) were measured at baseline, each week of the intervention, and after the intervention. Resistance training resulted in a 16.3 ± 18.7% (P < 0.05) increase in insulin sensitivity (Cederholm index). Muscle thickness, maximal isometric torque and one‐repetition maximum increased with training, and at the end of the intervention were 10.3 ± 2.5, 26.9 ± 8.3, 18.3 ± 4.5% higher (P < 0.05 for both) than baseline, respectively. The rate of torque development at 50 and 100 ms, but not at 200 and 300 ms, increased (P < 0.05) over the intervention period. Six weeks of single‐set resistance exercise to failure results in improvements in insulin sensitivity and increases in muscle size and strength in young overweight men.
Posted onJanuary 21, 2020|Comments Off on Reduce Your Risk of Cancer By Up to 25%
This activity could increase your odds of accidental death by up to 100%
What I dislike about a phrase like “…up to 25%” is that it includes only 1%.
In findings published Thursday in the Journal of Clinical Oncology, researchers at the National Cancer Institute, the American Cancer Society, and the Harvard T.H. Chan School of Public Health report that people who engaged in physical activity as recommended by the National Institutes of Health were able to reduce their risk for seven different types of cancer by as much as 25 percent.
This included common—and deadly—forms of the disease like colon and breast cancers, as well as endometrial cancer, kidney cancer, myeloma, liver cancer, and non-Hodgkin lymphoma.
* * *
Updated federal guidelines for physical activity recommend that people should aim for two and a half to five hours per week of moderate-intensity activity or 75 to 150 minutes per week of “vigorous activity.”
Dementia is a devastating and expensive development for an individual and his family. Most dementias are progressive and incurable. If it can be prevented, it should be. Exercise is one preventative. But how much and what kind of exercise?
Nine percent of U.S. adults over 65 have dementia. That’s 3.650,000 folks.
From The Globe and Mail:
In 2017, a team led by the lab’s director, Jennifer Heisz, published a five-year study of more than 1,600 adults older than 65 that concluded that genetics and exercise habits contribute roughly equally to the risk of eventually developing dementia. Only one of those two factors is under your control, so researchers around the world have been striving to pin down exactly what sort of workout routine will best nourish your neurons.
Heisz’s latest study, published last month in the journal Applied Physiology, Nutrition, and Metabolism, offers a tentative answer to this much-debated question. Older adults who sweated through 12 weeks of high-intensity interval training improved their performance on a memory test by 30 per cent compared with those who did a more moderate exercise routine.
This was a small study, only about 20 sedentary participants (all over 60 years old) subjected to one of three protocols for twelve weeks, exercising thrice weekly:
Four-minute bouts of vigorous treadmill walking at 90-95% of maximum heart rate, repeated four times, with three minutes easy walking between the high-intensity spells intervals (HIIT)
Walking at 70-75% of max heart rate for 47 minutes (burning the same number of calories as group #1
Thirty minutes of relaxed stretching
Alex Hutchinson’s full article is well worth a couple minutes of your time if you want to avoid dementia.
Posted onJuly 22, 2019|Comments Off on Training for Fitness In Midlife and Beyond
You won’t see her at your home gym
From American Partisan:
If you have chronic pain or have been out of the gym a long time, build up volume (number of sets x number of reps x weight) slowly. Pick weights you can lift without pain and increase weight and volume in pain-free steps. The great thing about weight training is it allows you to easily control training variables in a safe, measurable, and repeatable manner while building work capacity and strength. If one exercise hurts, substitute for another. For example, if it hurts to back squat, substitute for a front squat….Right now, for example, I’ve built up a bit of pain in my biceps so I’ve substitute pull-ups for chin-ups which seem to take the stress off my biceps due to the weird angle between my upper and lower arms.
Cardio is built-up in a similar manner. If one thing hurts, do something else or do it only within a pain-free time-interval and intensity to prevent pain flare-ups. Develop a large variety of ways of doing cardio rather than do the same thing every day since training benefits heavily from novelty. For example, you can use the assault bike one day, the agility ladder the next, barbell complexes a third day, and agility ladders a fourth day. If you’re very overweight, start with walking.
The article recommends a book by Bill Hartman called All Gain No Pain. The numerous five-star reviews (and very few with lesser stars) at Amazon.com seem a bit fishy to me due to over-the-top praise and few details. Do you have an opinion on the book?
Check out the quality of Amazon.com book reviews at ReviewMeta.com.
Posted onJune 5, 2019|Comments Off on Burn More Fat With Interval Training Versus Continuous Exercise
From JAMA Network:
Exercisers can burn slightly more body fat with interval training than moderate-intensity continuous training, according to a recent systematic review and meta-analysis in the British Journal of Sports Medicine. Although the differences in fat loss weren’t huge, the interval workouts were shorter, which could make it easier for people to adhere to them.
Posted onApril 29, 2019|Comments Off on How to Strengthen Your Core Without Injuring Your Back
A position you’ll see in the Five Tibetan Rituals for prevention and treatment of back pain
Fanatic Cook posted some (potentially) myth-busting videos featuring Dr Stuart McGill that may challenge your preconceptions about core exercises.
He [Dr McGill] says that a flexible back or a strong back are not protective of back injury. In fact, they are associated with more injury. The muscles of the back are meant to stabilize, to prevent movement. This is true for abdominal muscles and others of the core or torso. However, since back and stomach muscles are in constant use, they need to be maintained to provide endurance.
Now I don’t feel so bad about not being able to touch my toes by bending over at the waist. I regained the ability to do that eight years ago by following the Core Performance program. But that regimen took about five hours a week—more than I wanted to invest long-term
Posted onFebruary 14, 2019|Comments Off on Exercise Training Adds Heart and Metabolic Benefits to a Paleolithic Diet in Type 2 Diabetes Mellitus
The accumulation of myocardial triglycerides and remodeling of the left ventricle are common features in type 2 diabetes mellitus and represent potential risk factors for the development of diastolic and systolic dysfunction. A few studies have investigated the separate effects of diet and exercise training on cardiac function, but none have investigated myocardial changes in response to a combined diet and exercise intervention. This 12-week randomized study assessed the effects of a Paleolithic diet, with and without additional supervised exercise training, on cardiac fat, structure, and function.
Methods and Results
Twenty-two overweight and obese subjects with type 2 diabetes mellitus were randomized to either a Paleolithic diet and standard-care exercise recommendations ( PD ) or to a Paleolithic diet plus supervised exercise training 3 hours per week ( PD – EX ). This study includes secondary end points related to cardiac structure and function, ie, myocardial triglycerides levels, cardiac morphology, and strain were measured using cardiovascular magnetic resonance, including proton spectroscopy, at baseline and after 12 weeks. Both groups showed major favorable metabolic changes. The PD – EX group showed significant decreases in myocardial triglycerides levels (-45%, P=0.038) and left ventricle mass to end-diastolic volume ratio (-13%, P=0.008) while the left ventricle end-diastolic volume and stroke volume increased significantly (+14%, P=0.004 and +17%, P=0.008, respectively). These variables were unchanged in the PD group.
Exercise training plus a Paleolithic diet reduced myocardial triglycerides levels and improved left ventricle remodeling in overweight/obese subjects with type 2 diabetes mellitus.