Suspect charged after Vancouver car ramming leaves 11 dead    Suspect in killing of general claims he was paid by Ukraine    North Korea confirms troop deployment to Russia for first time    Rock & Roll Hall of Fame picks Outkast but not Oasis    400-800 year old giant coral colony discovered within AMAALA waters in the Red Sea    Makkah police arrest Yemeni and Egyptian suspects of fake Hajj campaign    Kafalah grants 1,900 loan guarantees worth over SR4.8 billion to SMEs during 1Q 2025    Council of Senior Scholars reaffirms performing Hajj without a permit is a sinful act    HR Ministry launches 'Ajeer Al-Hajj' service for seasonal work during Hajj 2025    stc reports strong first-quarter 2025 results with 11% rise in net profit    King and Crown Prince offer condolence to Iranian president over the deadly port explosion    Saudi Awwal Bank records SR2.1 billion net profit after zakat and income tax for 1Q25    Virgin Atlantic celebrates one month of nonstop service between London and Riyadh    Al Ahli cruise past Buriram into AFC Champions League Elite semi-finals    Duran leads Al Nassr past Yokohama Marinos into AFC Champions League Elite semi-finals    Saudi orchestra to perform at Sydney Opera House in May    Al Hilal thrash Gwangju to reach AFC Champions League Elite semi-finals    Saudi Theater Commission launches its Work and Learn Project in UK    The season has begun — and one comment shook us all    Average life expectancy in Saudi Arabia rises to78.8 years    Pakistani star's Bollywood return excites fans and riles far right    Veteran Bollywood actor Manoj Kumar dies at 87    Bollywood actress vindicated over boyfriend's death after media hounding    Grand Mufti rules against posting prayers and preaching in mosques on social media    Exotic Taif Roses Simulation Performed at Taif Rose Festival    Asian shares mixed Tuesday    Weather Forecast for Tuesday    Saudi Tourism Authority Participates in Arabian Travel Market Exhibition in Dubai    Minister of Industry Announces 50 Investment Opportunities Worth over SAR 96 Billion in Machinery, Equipment Sector    HRH Crown Prince Offers Condolences to Crown Prince of Kuwait on Death of Sheikh Fawaz Salman Abdullah Al-Ali Al-Malek Al-Sabah    HRH Crown Prince Congratulates Santiago Peña on Winning Presidential Election in Paraguay    SDAIA Launches 1st Phase of 'Elevate Program' to Train 1,000 Women on Data, AI    41 Saudi Citizens and 171 Others from Brotherly and Friendly Countries Arrive in Saudi Arabia from Sudan    Saudi Arabia Hosts 1st Meeting of Arab Authorities Controlling Medicines    General Directorate of Narcotics Control Foils Attempt to Smuggle over 5 Million Amphetamine Pills    NAVI Javelins Crowned as Champions of Women's Counter-Strike: Global Offensive (CS:GO) Competitions    Saudi Karate Team Wins Four Medals in World Youth League Championship    Third Edition of FIFA Forward Program Kicks off in Riyadh    Evacuated from Sudan, 187 Nationals from Several Countries Arrive in Jeddah    SPA Documents Thajjud Prayer at Prophet's Mosque in Madinah    SFDA Recommends to Test Blood Sugar at Home Two or Three Hours after Meals    SFDA Offers Various Recommendations for Safe Food Frying    SFDA Provides Five Tips for Using Home Blood Pressure Monitor    SFDA: Instant Soup Contains Large Amounts of Salt    Mawani: New shipping service to connect Jubail Commercial Port to 11 global ports    Custodian of the Two Holy Mosques Delivers Speech to Pilgrims, Citizens, Residents and Muslims around the World    Sheikh Al-Issa in Arafah's Sermon: Allaah Blessed You by Making It Easy for You to Carry out This Obligation. Thus, Ensure Following the Guidance of Your Prophet    Custodian of the Two Holy Mosques addresses citizens and all Muslims on the occasion of the Holy month of Ramadan    







Thank you for reporting!
This image will be automatically disabled when it gets reported by several people.



Workouts sculpt heart as well as muscles
Published in Saudi Press Agency on 07 - 05 - 2008


Exercise can cause structural
changes in the heart, and these changes vary depending on the
type of training an athlete is engaged in, new research shows, according to Reuters.
In a study, researchers found that endurance athletes
showed an increase in the size of both their left and right
ventricles after 90 days of team training, while athletes who
only did strength training had excessive growth in their left
ventricles, but no change in their right ventricle size.
And while the ability of the left ventricle to fully relax
between beats, or diastolic function, was enhanced in the
endurance athletes, it worsened in the strength trainers, Dr.
Aaron L. Baggish of Massachusetts General Hospital in Boston
and colleagues found.
Small studies have found that the left ventricle, the
heart's main pumping chamber, is larger in trained athletes,
although there has been no research on how exercise affects the
structure of the right ventricle. It is also unclear whether
exercise itself changes the structure of the heart or whether
individuals with unusually large left ventricles are more
likely to become athletes.
To investigate, Baggish and colleagues studied 40 endurance
athletes and 24 strength athletes, examining their hearts with
echocardiography before and after 90 days of team training. The
endurance group included male and female long-distance rowers,
while the strength group consisted of male football players.
While left ventricle mass increased in both groups, the
endurance athletes also showed better diastolic function in
their left ventricle, and enlargement and more efficient
contraction and relaxation in both of the lower chambers of the
heart, or atria.
But the strength-trained athletes actually had hypertrophy,
or excessive growth, in the muscle of the left ventricle, and
reduced diastolic function, but no other structural changes.
The findings "strongly refute" the idea that people are
able to become competitive athletes due to their heart
structure, and instead demonstrate that it is athletic training
itself that is largely responsible for "athlete's heart," the
investigators write.
The results could also point the way to making tailored
recommendations for rehabilitation and recreational exercise
for people with heart problems, they add.


Clic here to read the story from its source.