Team Sports Beat Solo Training for Kids' Mental Health—Data Says So

Here's a number that should stop you cold: in a study of over 11,000 U.S. children, kids who played team sports scored 19% lower on withdrawn/depressed scales, while those who stuck to individual sports showed 16% higher anxiety/depression scores (ABCD Study, National Institutes of Health). If you're a parent or coach pushing a kid into solo training—think swimming laps, track intervals, or solo tennis drills—you might be doing more harm than good. I'm not saying solo sports are useless, but the evidence is clear: when it comes to mental health, team sports are the heavyweights, and solo training is the underdog that often gets knocked out.

The Numbers Don't Lie: Team Sports Crush Solo Training on Mental Health

Let's lay out the facts. The ABCD Study, which followed over 11,000 kids, found that team sport participants had 19% lower withdrawn/depressed scores and 17% lower social problems scores. Meanwhile, individual sport participants showed 16% higher anxiety/depression scores. That's not a small gap—that's the difference between a kid who thrives and one who struggles. And it's not just about mood: a meta-analysis of 46 longitudinal studies found that youth sport participants had higher physical activity (d = 0.24), better health and wellbeing (d = 0.23), lower unhealthy body composition (d = -0.21), and fewer symptoms of anxiety, depression, and stress (d = -0.25) than nonparticipants (Int J Behavioral Nutrition & Physical Activity, 2025).

Why Team Sports Win: The Social Glue

Researchers attribute team sport benefits to belongingness, supportive peers, friendship formation, shared responsibility, and collaborative goals—factors less present in individual sports (ABCD Study). That's the secret sauce: a team gives a kid a built-in squad that has their back. In solo training, you're alone with your thoughts, which can spiral into anxiety. A Swedish study of nearly 16,400 children found that organized sports participation lowered first-time mental health problem risk by 23% for boys and 12% for girls (Lundgren et al., British Journal of Sports Medicine, 2025). And the depression numbers are even more striking: organized sports lowered depression risk by 35% for boys and 11% for girls, and anxiety risk by 21% and 14% respectively. That's not a gentle nudge—that's a full-on rescue.

Head-to-Head: Team Sports vs. Solo Training

Let's compare the two on the criteria that matter most for a young athlete's mental health.

On social connection, team sports are a no-brainer: you've got a squad that relies on you, and you rely on them. That shared responsibility is a powerful buffer against stress. Solo training, by contrast, is a lonely grind—it's just you and the clock, and if you're prone to negative self-talk, that's a dangerous loop.

Who Should Still Choose Solo Training? The Exceptions

Before you ditch the solo track, let's be fair. Solo training has its place. If a kid is intensely introverted, or has social anxiety that makes team settings overwhelming, solo sports can be a gentler entry point. But the data suggests that even then, team sports offer more psychological protection. The ABCD Study found that sustained team sport participation from adolescence was linked to lower stress, better coping, and lower likelihood of panic disorder symptoms. That's not just for the extroverted kid—it's for everyone. If your kid is struggling socially, don't shield them from team sports; that might be exactly what they need to break out of their shell. Start with a low-pressure rec league, and let the team do the heavy lifting.

The Reality Check: Costs and Participation Trends

Here's the rub: not every kid can afford to join a team. Youth sports costs have grown about 46% since 2019 (Aspen Institute Project Play, State of Play 2025), and significant access gaps remain between upper- and lower-income homes. The National Survey of Children's Health shows that in 2023, 55.4% of youth ages 6-17 played sports, up from 53.8% in 2022 (State of Play 2025). But that still leaves nearly half of kids on the sidelines. And the gender gap is real: boys' participation has dropped from 50% in 2013 to 41% in 2023, while girls ages 6-12 and 13-17 are at their highest participation rates since at least 2012 (State of Play 2024). If you're a parent, don't let cost be the excuse—look for community leagues, school teams, or even just organize pickup games at the park. The investment is worth it.

What I'd Actually Do

Here's my blunt advice: if your kid is between 6 and 17 and you want to protect their mental health, put them in a team sport. Period. The data is overwhelming. Team sports slash depression and anxiety risks by double digits, while solo training can actually increase anxiety. That's not a guess—that's what the ABCD Study and Lundgren et al. found. If you're worried about costs, look for subsidized programs or school teams. If your kid is shy, start with a recreational league where the pressure is low. But don't let them train alone in their room—get them on a team. The social glue of teammates is the best mental health booster we know. And if you're a coach or a trainer, push team-based activities in your programming. The kids will thank you.

Sources

• Int J Behavioral Nutrition & Physical Activity (2025) - https://pubmed.ncbi.nlm.nih.gov/40598359/
• ABCD Study (National Institutes of Health) - https://abcdstudy.org/
• Lundgren et al. (British Journal of Sports Medicine, 2025) - https://bjsm.bmj.com/
• Aspen Institute Project Play (State of Play 2024) - https://projectplay.org/state-of-play-2024
• Aspen Institute Project Play (State of Play 2025) - https://projectplay.org/state-of-play-2025