• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Home
  • About Us
  • STEPS Virtual
  • FAQ
  • Links
  • Contact Us
  • Facebook
  • Google+
  • LinkedIn
  • YouTube
  • 615.269.8844

STEPS Fitness

Nashville's Premier Personal Fitness Training Center

  • STEPS Virtual
  • Programs
    • STEPS Fitness Presents Events
    • DR. Irv’s Perfect Exercise Minute
    • Training Packages
    • Group Offerings
    • Corporate Wellness
    • Traveler’s Special
  • Personal Trainers
    • Dr. Irv Rubenstein
  • Testimonials
  • Fitness Blog
    • Dr Irv’s Fitness Blog
    • Exercise of the Month
  • Newsletters
    • Fit Happens
    • Real News Newsletter
  • Search

May 1, 2021 By Irv Rubenstein

REAL News – May 2021

Print Friendly, PDF & Email

REAL News March 2018

May 2021

Revisiting Sitting: Does Your Cardio Fitness Protect You? 

Sedentary living defines modern mankind. We have reviewed some of these effects here, here, here and here. And we now know that too much sitting kills by contributing to peripheral artery disease by impairing endothelial function (EF), that is, how our blood vessels respond to changes in activity. When you sit for long hours, blood flow slows and viscosity thickens…and fatty deposits form that may, down the road, cause clots to dislodge.

We also know that regular endurance training improves EF via increased nitric oxide (NO) availability which expands blood vessels. Japanese researchers wanted to know if the transient EF dysfunction from sitting is mitigated endurance training.

REAL-News --May-20211

Nine untrained college-age males and 10 collegiate cyclists sat still for 3 hours after having non-invasive vascular measurements of the popliteal artery behind the knee taken. Venous diameter and blood velocity, plus blood pressure were measured hourly and again at the end of the test period.

Surprise, surprise: the non-athletes demonstrated impaired EF but the endurance athletes did not.

Despite both groups having some reduction in microvascular blood flow and shear rate (an otherwise favorable process), the % reduction in the athletes did not meet the standard of impaired macrovascular function. 

Sadly, though, this was not the case from other studies that used lesser trained athletes. The ones in this study were pretty elite (60.8 ml/min/Kg max VO2) competitive jocks compared to another study which had recreational athletes averaging 50 ml/min/Kg VO2 max.

The take home message is, don’t sit still too long unless you’re in great cardio shape!                   

MSSE Aug. 2020

Daily Step Count Affects Post-Meal Fat Metabolism

While we’re on sitting around as we endure another snow-packed lockdown, let’s add one more anti-health effect from it: reduced post-meal plasma triglyceride response to a high-fat meal. Studies show that the exercise you do today improves that response and also increases fat oxidation the day after exercise. Two University of Texas – Austin researchers wanted to home in on how many daily steps were necessary to derive these benefits.

They had 10 recreationally-active young adults do three trials of eating a high-fat meal after a prescribed step-count the day before. The counts were 2500, 5000 and 8500 steps/day and on the day of the meal did a 1-hour run. Then they were tested on how well they oxidized carbs and fats as well as overall calories. 

REAL-News --May-20212

The subjects stuck pretty close to the prescribed number of steps. The LOW did, on average, 2675 while the LIMITED did 4759. Compared to the NORMAL group, who took 8431 steps, their whole- body fat oxidation and plasma triglyceride responses were “significantly impaired.” The LOW and LIMITED had a 14%-19% reduction in fat oxidation with a 22%-23% increase in triglycerides (not favorable results), respectively, compared to the HIGH step counts.

These deficiencies demonstrate that, despite the 1-hr run the same day, taking too few daily steps impairs metabolic function. The relatively-new concept of “exercise resistance” suggests that excessive sedentariness may not allow normal metabolism even in the face of an exercise bout. So, move more, daily!

MSSE  Feb. 2021

Tid Bits

A  24-week study comparing yin yoga and a circuit resistance training + functional impact exercises (RT) on breast cancer survivors found that both improved lower body strength but neither reduced body fat or increased bone mineral density, as desired. RT improved upper body strength and was well tolerated by participants but the authors suspect that the group format was not challenging enough to build bone and lose fat.                                                                  MSSE Jan. 2021

 

We’re down to 12 minute vigorous workouts to yield heart health benefits. In the 70s and 80s, it was 30-60 minutes. In the 90s and aughts, when high intensity exercise made its name, we went to 20-30 minutes. Now a study of 411 middle age adults in the Framingham Heart Study found that a mere 12 minutes of hard exercise produced favorable changes in 80% of the 588 metabolites linked to metabolic and heart health. It lowered those associated with insulin resistance (a precursor to diabetes), lipolysis (breakdown of fats), inflammation and blood vessel integrity.   Harvard Health Letter Feb 2021

 

Shoulder pain is a real challenge. A European study hypothesized that, since subacromial pain syndrome (where soft tissue is compressed between two bones) is characterized by reduced blood flow and therefore reduced oxygenation of the muscles and tendons, an exercise routine that focuses on high levels of endurance might help. They had 2 groups of patients do either HIIT or usual therapy for 8 weeks. The HIIT group did supraspinatus and scapular stability exercises to exhaustion – 3 sets of 4 min. intervals with 3 min. rest periods! Not only did their rotator cuff muscles improve endurance by 136%, but also their max work rate increased by 167% vs 26% for the controls. Tendon blood flow rates were similar between groups but vascularity improved more in the HIIT group than the controls.                                                                                     MSSE Jan. 2021

Related Posts:

  • REAL-News --May-2024
    REAL News - June 2023
  • REAL News - November 2022
    REAL News - November 2022
  • Fit-Happens - -Spring -2025
    REAL News - August 2022
  • REAL-News--February-20251
    REAL News - May 2023
  • Part-1:-GLP-1-Receptor-Agonists:-The-New,-Improved,-and-Not-Fully-Understood-Weight-Loss-Drugs
    Part 1: GLP-1 Receptor Agonists: The New, Improved,…
  • REAL-News--April-2024
    REAL News - April 2024
  • REAL News – December 2024
    REAL News - December 2024
  • Part 1: GLP-1 Receptor Agonists: The New, Improved, and Not-Fully-Understood Weight Loss Drugs
    REAL News - November 2023

Comments

comments

Filed Under: Real News Tagged With: breast cancer, daily steps, endothelial function, sedentariness, shoulder rehab

sidebar

Blog Sidebar

FREE Consultation!

  • This field is for validation purposes and should be left unchanged.

Categories

  • Exercise of the Month
  • Fit Happens
  • Fitness Blog
  • General News
  • Newsletters
  • Real News
  • Trainers

Tags

achieve well-being aging Alzheimer's disease barefoot running body fat bone density burn off excess weight calories cardio cardiovascular childhood obesity covid diabetes diet dieting eating disorders Exercise exercise intensity field of health or exercise science fitness flexibility functional fitness health Heart Health higher risk of obesity lose weight low back pain mental health musculoskeletal improvements obesity osteoarthritis physical activity physically active protein reduce your risk of falling resistance training running Senior Training slows cognitive decline strength training Stretching training weight loss Weight loss vs Exercise gain weight management

Recent News

May 01

REAL News – May 2025

Apr 01

REAL News – April 2025

Mar 18

Fit Happens – Spring 2025

Mar 01

REAL News – March 2025

Feb 01

REAL News – February 2025

Reviews

Search Our Directory

Footer Widget Header

Affiliations

  • american-college-of-sports-medicine
  • american-council-on-exercise
  • biometrics
  • exercise-etc-inc
  • national-strength-and-conditioning-association
  • renewed-support

STEPS Fitness | 2424 21st Ave. S. Suite #100 | Nashville, TN 37212 | 615.269.8844 p

© 2025 Nashville's Premier Personal Fitness Training Center | Designed by Ponder Consulting ®

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.Ok