ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Vitamin D supplements, sleep could help manage pain

Bacopa: The Herb That May Increase Your Brain Power

Lilac Oil: More Than Just for Fragrance

Eat More Yogurt and Avoid Osteoporosis

Safflower: An Economically Important Herb That Can Benefit Humans and Animals Alike

What Is Bilberry Good For?

Coffee, herbal tea may help prevent liver fibrosis

Crafty Uses for Carrot Seed Oil

Resveratrol Improves Arteries

Higher omega 3 levels linked to improved brain blood flow

 
Print Page
Email Article

Muscle strength, voluntary activation, twitch properties, & endurance in patients with fibromyalgia (FM )

  [ 97 votes ]   [ Discuss This Article ]
www.ProHealth.com • September 3, 1994


Previous studies have shown decreased voluntary muscle strength and
endurance in patients with fibromyalgia. The aim of this study
was to determine to what extent this is due to lack of
exertion. The twitch interpolation technique was used to
determine the degree of central activation and estimate the
"true" quadriceps muscle strength in patients with
fibromyalgia and age and sex matched controls. Subjects
hereafter performed an endurance test consisting of repetitive
contractions at 50% of estimated "true" muscle strength of
four seconds duration followed by a six second rest until
exhaustion, or maximally for 40 minutes. Twitch decline and
increases in mean rectified EMG were used as objective markers
of fatigue. The estimated "true" muscle strength was 82 (SD
26) Nm in 20 patients with fibromyalgia compared with 133 Nm
(SD 28) Nm in the 21 controls (p < 0.001). The "true" muscle
strength per cm2 midthigh cross sectional area was lower 0.50
(SD 0.15) Nm/cm2 in the patients compared with 0.74 (SD 0.15)
Nm/cm2 in the controls (p < 0.001). The decline over time in
twitch sizes was similar in the two groups. The mean rectified
EMG signal at a fixed force level of 50% of "true" muscle
strength increased similarly in the two groups. Relaxation
rates and contraction rates also increased equally in the two
groups.
In conclusion, a reduction of the estimated muscle
strength per area unit of about 35% was found in the patients
with fibromyalgia. This might be secondary to physical
inactivity or neuroendocrine factors. No differences in
changes in the neurophysiological indices associated with
fatigue were found between the two groups.

Norregaard J, Bulow PM, Danneskiold-Samsoe B




Post a Comment

Featured Products From the ProHealth Store
Ultra ATP+, Double Strength Energy NADH™ 12.5mg Vitamin D3 Extreme™

Looking for Vitamins, Herbs and Supplements?
Search the ProHealth Store for Hundreds of Natural Health Products


Article Comments



Be the first to comment on this article!

Post a Comment


 
NAD+ Ignite with Niagen

Featured Products

FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Optimized Curcumin Longvida® Optimized Curcumin Longvida®
Supports Cognition, Memory & Overall Health
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium

Natural Remedies

Clinically Studied Joint Relief Product for FM & ME/CFS Clinically Studied Joint Relief Product for FM & ME/CFS
Joint Aches May Have Met Their Match in Curcumin Joint Aches May Have Met Their Match in Curcumin
Fight Inflammation and Promote Cognitive Health with High-OPC Grape Seed Fight Inflammation and Promote Cognitive Health with High-OPC Grape Seed
The Revolutionary 'Good Fat' That Promotes Heart, Brain, Bone and Joint Health The Revolutionary 'Good Fat' That Promotes Heart, Brain, Bone and Joint Health
Secret Nutrient for Radiant Skin Secret Nutrient for Radiant Skin

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE TO OUR NEWSLETTERS
Get the latest news about Fibromyalgia, M.E/Chronic Fatigue Syndrome, Lyme Disease and Natural Wellness

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2017 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map