Lifting and Your Mood copertina

Lifting and Your Mood

Lifting and Your Mood

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 Nothing about your life changes during a workout. Same job, same inbox. And yet the person who walks out of the gym is frequently not the person who walked in. The easy explanation is relief: you're just glad it's over. The research points somewhere more interesting.A 2018 analysis of 33 randomized trials found that resistance training produced a moderate reduction in depressive symptoms. That part isn't shocking. What's strange is what didn't matter. People who got stronger didn't do better than people who didn't. Total training volume made no difference. Neither did whether participants were healthy or living with a diagnosed condition. Whatever lifting does for mood, it appears to run on a separate track from the muscle.Then there's the 2024 study that put exercise types head to head in more than 14,000 people with depression. Lifting did not win. Walking and jogging took the top spot, which is hard news for anyone who finds running unbearable. But strength training had its own finding worth hearing, and it has to do with who was still showing up at the end.This episode covers what those studies measured and what they didn't, the limits of the "endorphins" story, why a hard session seems to land differently than an easy one, how much of the effect might be the people in the room rather than the weight on the bar, and the case for a heavy set of squats as self-care. There's also a story about a teenager in a hoodie, and a Christmas gift from her mother that wasn't about the money.Lifting is something you add alongside treatment, not something you swap for it. If you're in crisis in the US, call or text 988.Links & NotesAssociation of Efficacy of Resistance Exercise Training With Depressive Symptoms: Meta-analysis and Meta-regression Analysis of Randomized Clinical Trials(Gordon et al., JAMA Psychiatry, 2018). The 2018 study Srdjan cites. 33 randomized trials, 1,877 participants. Resistance training reduced depressive symptoms with a moderate effect size (0.66). Strength improvement, total prescribed volume, and health status did not change the result. Trials with blinding showed smaller effects. The authors call it a possible "alternative and/or adjuvant therapy."Effect of exercise for depression: systematic review and network meta-analysis of randomised controlled trials(Noetel et al., BMJ, 2024). The 2024 study Pete cites. 218 studies, 14,170 participants with depression. Walking or jogging had the largest effect, then yoga, then strength training. Strength training and yoga had the lowest dropout. Vigorous activity showed a larger effect than light activity, with wide, overlapping intervals. The authors rate confidence in the evidence as low and suggest exercise "could be considered alongside psychotherapy and antidepressants."The Effects of Resistance Exercise Training on Anxiety: A Meta-Analysis and Meta-Regression Analysis of Randomized Controlled Trials(Gordon et al., Sports Medicine, 2017). Same research group, one year earlier, on anxiety. 16 studies, 922 people. Resistance training reduced anxiety symptoms, and the effect was larger in healthy participants than in those with an illness. Sex, age, frequency, intensity, program length, and strength improvement didn't change the result.Exercise-induced euphoria and anxiolysis do not depend on endogenous opioids in humans (Siebers et al., Psychoneuroendocrinology, 2021). The asterisk on "endorphins." 63 participants ran for 45 minutes after taking either naltrexone, which blocks opioid receptors, or a placebo. The blocker didn't prevent the euphoria or the drop in anxiety. Endocannabinoid levels rose either way.Physical activity and depression: Towards understanding the antidepressant mechanisms of physical activity(Kandola et al., Neuroscience & Biobehavioral Reviews, 2019). The menu of candidate mechanisms: neuroplasticity, inflammation, oxidative stress, and the endocrine system on the biological side; self-esteem, social support, and self-efficacy on the psychosocial side. The authors state plainly that none are yet established.988 Suicide & Crisis Lifeline. Call or text 988 in the US, 24/7.Episode 41: Lifting for Your Brain: What Resistance Training Does Above the Neck. The hardware episode. This one is about how you feel.Episode 39: Stress, Cortisol, and Your Gains. Stress regulation is one of the candidate pathways.Episode 42: Sleep Is the Workout. Sleep is probably part of the mood pathway too, and nobody has cleanly separated it out.Episode 30: Throw the Scale Away. The scale lies. This week: the bar might too.Episode 13: Why Strength Sticks When Goals Don't. The self-efficacy loop, from the habit side.Rest is Not One Thing. Rest is defined by how you recharge, not by pace.Work with Srdjan and the team at ELEV8 Fitness.Submit your questions to the show! Listener questions episode is coming up. Get them in.
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