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Teenagers have long been told that being active and {#blank#}1{#/blank#}(take) part in sports is good for their
health. But new research suggests that too much sport for teenagers could
negatively affect their well-being just as much as too {#blank#}2{#/blank#} sport.
The US Department of Health and Human Services suggests that
young people {#blank#}3{#/blank#}(age) between 6 and 17 work{#blank#}4{#/blank#}at least 60 minutes a day, 7 hours a
week. But researchers from Switzerland say their study suggests that 14 hours
of physical activity a week is best for promoting good health in teenagers.
However, more than 14 hours {#blank#}5{#/blank#} (appear) to be harmful to their health. To
reach their findings, they had 1,245 teenagers {#blank#}6{#/blank#}(survey) in their research.
All participants (参与者) were required to answer questions
about height and weight, sports practice, sports {#blank#}7{#/blank#} (injure) and well-being. Their well-being was
measured using the Word Health Organization (WHO) Well-being Index, {#blank#}8{#/blank#} provides scores between 0 and 25. Of the
participants, 50.4% were male. Almost 9% of these males were overweight. The
overall {#blank#}9{#/blank#}well-being score for all participants
was 17.
The researchers divided sports
participants into low, average, {#blank#}10{#/blank#}, and very high. The researchers found
that participation in the low and very high activity groups were more likely {#blank#}11{#/blank#} (have) well-being scores below 13, compared
with participants in the average group. The researchers found that the highest
well-being scores were {#blank#}12{#/blank#} a by participants who carried out around 14
hours of physical activity a week, but beyond 14 hours resulted {#blank#}13{#/blank#} lower well-being scores.
The researchers suggest that doctors {#blank#}14{#/blank#} care for teenagers should check their level of
sports practice. Teenagers {#blank#}15{#/blank#} (probable) need a supportive and closer
follow-up of their health and well-being.