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Strength training explained through strength, biomechanics, movement, and evidence for people who want to train better, understand their bodies, and build a sustainable fitness routine.

Mulher aparece em dois momentos de um agachamento com barra em uma academia, um na posição baixa e outro durante a subida.

Biomechanics & Technique28/09/2026

Strength training tempo: what changes when you slow the lowering or lifting phase

Slowing the eccentric or concentric phase changes time under tension, load, repetitions, and velocity. Evidence does not support the idea that slower is automatically better for st...

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Atleta realiza três profundidades de agachamento com barra em academia, com marcadores coloridos ao lado do quadril indicando diferentes faixas de movimento.

Biomechanics & Technique21/09/2026

Full or partial range of motion in strength training: when each approach makes sense

Full range is a solid foundation for strength and hypertrophy, while lengthened partials can have specific uses. Learn how to choose a range without turning ROM into a universal ru...

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Mulher treina em máquina de musculação enquanto homem executa levantamento com barra em área de pesos livres de uma academia.

Biomechanics & Technique21/09/2026

Machines or free weights? What really changes for strength, hypertrophy and stability

Learn where machines and free weights actually differ, why hypertrophy tends to be similar, and how specificity changes strength gains.

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Homem musculoso descansando em um banco de academia ao lado de uma barra carregada, com cronômetros marcando 60, 90 e 180 segundos ao fundo.

Training & Progression13/09/2026

Rest Between Sets: 60, 90, or 180 Seconds? What the Evidence Shows for Hypertrophy and Strength

Evidence does not support one universal interval: rests over 60 s may slightly favor hypertrophy, while heavy strength work often benefits from 2–5 minutes.

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Homem musculoso sentado em banco de academia entre uma barra muito carregada e outra mais leve, com toalha e itens de recuperação ao lado.

Preparation & Recovery13/09/2026

Deload in resistance training: does reducing volume help or hurt strength and hypertrophy?

Recent studies show important differences between reducing volume, stopping completely, and continuing normal training. Here is what the evidence says about strength, hypertrophy, ...

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Mulher sentada no chão de uma academia fazendo alongamento de perna ao lado de uma barra com anilhas e halteres.

Preparation & Recovery12/09/2026

Does static stretching before lifting reduce strength? Duration, intensity and timing matter

Stretching before lifting is not automatically harmful: duration, intensity, time to the set and the type of effort shape the risk of an acute strength drop.

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Mulher faz agachamento com barra em comparação lado a lado, com sobreposição anatômica das pernas, linhas de referência e ícones verde de confirmação e vermelho de erro.

Biomechanics & Technique11/09/2026

Can your knees go past your toes in a squat? What changes at the knee, hip and trunk when you restrict the motion

Letting the knee travel past the toes increases mechanical demand at the knee, while restricting that travel tends to shift more demand to the hip and trunk. That does not, by itse...

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Mulher fazendo remada com halter e homem treinando com barra em academia, ao lado de quadro visual sobre séries, frequência, carga e falha.

Training & Progression10/09/2026

ACSM 2026 and resistance training: what changes for sets, frequency, load and training to failure

The new ACSM guideline explains how to adjust resistance training for strength, hypertrophy and power — and why training to failure is not mandatory.

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Mulher realiza agachamento com barra carregada enquanto um treinador acompanha de perto em uma academia.

Training & Progression08/09/2026

Is RIR reliable? What 26 studies show about when estimates miss more

A systematic review of 26 studies suggests RIR is more accurate closer to failure and at higher relative loads, and less accurate in long, lighter sets.

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