Prática de Shadowing: Osteoporosis - Aprenda a falar inglês com vídeo

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The skeleton is made up of bones, which provide support and shape to the body.
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They protect soft internal organs, such as the brain and heart, from injury.
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Together with muscles, strong bones enable the body to move freely.
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Bones have a solid outer surface called compact bone.
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The inner bone is called spongy bone
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because it is less dense than compact bone and has many small holes like a sponge.
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Bones contain cells called osteoclasts that break down bone tissue.
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Other cells, called osteoblasts, make new bone tissue using minerals such as calcium and phosphate from the blood.
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Hormones such as estrogen, growth hormone,
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and testosterone help keep the number and activity of osteoblasts higher than osteoclasts so that more bone is made than removed.
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Physical forces and pressure during exercise also help bones to grow stronger and denser.
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These processes allow bones to grow strong in children and young adults.
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People have their strongest, most dense bones, called peak bone mass, in their 30s.
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After this age, osteoclasts gradually remove more bone than the osteoblasts make.
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Osteoporosis is a condition that leads to weakened bones, causing them to break more easily.
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Healthy bone is dense enough to support and protect the body, and to handle the stresses of movement and minor injuries.
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However, people with osteoporosis have abnormally thin bones with larger holes in the spongy bone.
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There are two types of osteoporosis.
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Primary osteoporosis is usually related to older age, as well as a reduced amount of estrogen in women.
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Secondary osteoporosis affects both children and adults.
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It is related to other diseases or conditions, such as cancer, hormone problems, or use of certain medications.
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A person has a greater risk for either type of osteoporosis
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if they don't develop enough bone mass when they're growing from childhood to adulthood.
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Risk factors that can lead to low peak bone mass include a family history of osteoporosis,
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being white or Asian, being female,
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a poor diet, certain medications such as steroids or certain seizure medicines,
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lack of physical activity and weight -bearing exercise, • And lifestyle behaviors, such as smoking and drinking too much alcohol.
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A person also has a greater risk for either type of osteoporosis
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if they have an abnormal amount of bone loss after age 30.
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Some bone loss is normal after this age.
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However, a person with the same risk factors for low peak bone mass can be more likely to get osteoporosis as they age.
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Increased bone loss is also common in women after the time of a woman's last period, called menopause.
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After menopause, a woman's ovaries stop making the hormone estrogen.
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With the drop in hormones, bone -removing cells, called osteoclasts, are more active than the bone -making cells, called osteoblasts.
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Bones may break or fracture easily because they're unable to withstand the physical strain and pressure from even normal activities.
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Common fracture locations in people with osteoporosis include the wrists, spine, and hips.
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Building strong,
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healthy bones through a diet rich in calcium and vitamins and getting regular exercise can help prevent as well as treat osteoporosis.
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Common medications for osteoporosis include biphosphonates,
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a medication called denosumab, Selective Estrogen Receptor Modulators, or CIRMs and calcitonin.
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In general, these medications act on bone -removing cells, called osteoclasts.
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Parathyroid hormone acts on bone -making cells, called osteoblasts.
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Food or supplements containing calcium and vitamin D are also recommended for osteoporosis.
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For more information, talk to a healthcare professional.

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Vocabulário e dicas de fala para esta lição

Esta aula de conversação usa o vídeo “Osteoporosis”. As palavras que mais se repetem: bone, osteoporosis, hormone, cells, osteoblasts. Este vídeo tem 35 frases e 578 palavras para praticar shadowing. A fala dura 5:05. O falante mantém um ritmo estável de cerca de 114 palavras por minuto, confortável para o shadowing. Apenas 73% das palavras estão entre as 3.000 mais comuns do inglês, por isso o vocabulário é exigente.

Vocabulário principal deste vídeo

15 palavras do vídeo que vale a pena aprender, com pronúncia e significado:

PalavraPronúnciaSignificado
bone substantivo/boʊn/osso
hormone substantivo/ˈhoɹmoʊn/hormônio, hormona
medication substantivo/mɛdɪˈkeɪʃən/medicamento, medicação
dense adjetivo/ˈdɛns/denso
calcium substantivo/ˈkælsi.əm/cálcio
tissue substantivo/ˈtɪʃ.(j)u/tecido
compact adjetivo/kəmˈpækt/compacto
vitamin substantivo/ˈvɪt.ə.mɪn/vitamina
fracture substantivo/ˈfɹæk.t͡ʃʰəː/fratura
thin adjetivo/ˈθɪn/fino
hip substantivo/hɪp/quadril, anca
muscle substantivo/ˈmʌs.əl/músculo
enable verbo/ɪˈneɪ.bəl/habilitar, possibilitar
lifestyle substantivo/ˈlaɪfˌstaɪl/estilo de vida
gradually advérbio/ˈɡɹæd͡ʒuəli/gradualmente, pouco a pouco

Pronúncia para ficar de olho

  • Os sons de “th”: thirty /ˈθɝti/, thin /ˈθɪn/, withstand /wɪðˈstænd/
  • Os sons de “sh” e “zh”: medication /mɛdɪˈkeɪʃən/, tissue /ˈtɪʃ.(j)u/, seizure /ˈsi.ʒɚ/
  • Palavras longas — acerte a sílaba tônica: medication /mɛdɪˈkeɪʃən/, testosterone /tɛˈstɑ.stəˌɹoʊn/, osteoporosis /ˌɒstiəʊpəˈɹəʊsɪs/, abnormally /æbˈnɔɹ.mə.li/, calcitonin /ˌkæl.sɪˈtoʊ.nɪn/

Sons difíceis para falantes de português:

  • Consoante final — sem acrescentar um “i” depois: compact /kəmˈpækt/, hip /hɪp/, supplement /ˈsʌp.lɪ.mənt/, wrist /ɹɪst/, withstand /wɪðˈstænd/
  • /l/ final — a língua toca o céu da boca, não vira “u”: muscle /ˈmʌs.əl/, enable /ɪˈneɪ.bəl/, lifestyle /ˈlaɪfˌstaɪl/, mineral /ˈmɪn.ə.ɹəl/
  • /h/ — um sopro suave, diferente do “r”: hormone /ˈhoɹmoʊn/, hip /hɪp/

Como praticar com este vídeo

  1. Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
  2. Faça shadowing frase por frase na velocidade normal, repetindo cada uma até o seu ritmo ficar igual ao do falante.
  3. Grave a sua voz e compare com o original, prestando atenção a palavras como bone, hormone, medication.

O que é a Técnica de Shadowing?

Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.

Técnica de shadowing: leia o guia completo passo a passo →