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Gym exercises by muscle group

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Browse our exercise library organized by muscle group. Each exercise includes correct technique, muscles worked, recommended sets and reps, and alternatives, whether with free weights, machines, cables or your own bodyweight.

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Abs

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Hamstrings

Lower back

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Chest

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Triceps

Multi-joint or isolation exercises? What a ten-week trial measured

When choosing gym exercises for a routine, the same blunt advice always appears: only the multi-joint basics count and isolation exercises are filler. That is a claim that can be measured, and someone measured it.

Gentil, Soares and Bottaro published a ten-week trial with untrained young men in the Asian Journal of Sports Medicine in 2015. One group trained only with the lat pulldown, a multi-joint exercise in which the elbow flexors work alongside the back; the other only with the biceps curl, which isolates them. They measured precisely those elbow flexors.

Results after ten weeks in the trial by Gentil et al. (2015), measured in the elbow flexors of untrained young men.
GroupExerciseMuscle thicknessPeak torque
Multi-jointLat pulldownAround +6%Between +10% and +12%
Single-jointBiceps curlAround +6%Between +10% and +12%

Both groups finished almost exactly the same, and the authors concluded that both exercise types are equally effective for gaining upper-body strength and size in beginners, recommending a choice based on available equipment, preference and time.

The limits are clear and should not be stretched: untrained men, a single muscle group and ten weeks. It does not say multi-joint exercises are unnecessary — they work several muscles at once, which saves time in any routine — it says isolation is not filler. That is why the library below mixes free weights, machines and cables, and also has a separate list of bodyweight exercises for anyone training without equipment.

References
  1. Gentil P, Soares S, Bottaro M. Single vs. multi-joint resistance exercises: effects on muscle strength and hypertrophy. Asian Journal of Sports Medicine. 2015;6(2):e24057.

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