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

16 Tips from 16 Years Sick

Fibromyalgia Fare Fit for All Seasons

New Study Shows Artificial Sweeteners Lead to Diabetes

Essential Oils — An Effective and Healthy Option to Treat Headaches

Higher vitamin D levels associated with less severe disease in NAFLD patients

Krill Oil: Make This Omega-3 Supplement Part of Your Health Regimen

How zinc helps fight esophageal cancer

Everything You Need to Know About Black Cohosh

Low vitamin D levels predict ED in diabetics

The Cellular Enzyme That Promotes Longevity And Reduces Fat Storage

 
Print Page
Email Article

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

  [ 38 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
FibroSleep™ Ultra ATP+, Double Strength Mitochondria Ignite™ with NT Factor®


Article Comments



Be the first to comment on this article!

Post a Comment


 
Optimized Curcumin Longvida with Omega-3

Featured Products

FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%

Natural Remedies

Irritable Bowel Syndrome: Unlocking the Secrets of Peppermint, Acacia and Fennel Irritable Bowel Syndrome: Unlocking the Secrets of Peppermint, Acacia and Fennel
Breaking Through the Mental Fog Breaking Through the Mental Fog
Vital Molecule Increases Cellular Energy and Improves Cognitive Function Vital Molecule Increases Cellular Energy and Improves Cognitive Function
Joint Aches May Have Met Their Match in Curcumin Joint Aches May Have Met Their Match in Curcumin
Dreaming of a Good Night's Sleep? Dreaming of a Good Night's Sleep?

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