The question echoes among runners: “This can’t happen to fit people, can it?” The tragic death of 25-year-old Jesper Nijkamp, an Omroep Gelderland journalist, after collapsing from heatstroke following a half marathon last year, has forced a reckoning within the running community. Now, his colleagues at Omroep Gelderland have released a powerful documentary, Oververhit (Overheated), aiming to raise awareness and prevent future tragedies.
Nijkamp’s death, a stark reminder that even well-trained athletes are vulnerable, spurred a deep dive into the often-underestimated risks of heatstroke. The documentary, born from shock and grief, has evolved into an intensive journalistic project, seeking to understand the factors that contribute to this potentially fatal condition and how to mitigate them.
A Question That Lingered
For Freke Remmers, a documentary maker with Omroep Gelderland, the moment she learned the cause of Jesper’s death remains vividly etched in her memory. “From the moment you hear that Jesper died of heatstroke, you immediately think: what *is* heatstroke, and why had none of us heard about it?” she recounts.
That initial bewilderment quickly spread throughout the newsroom. Running is widely perceived as a healthy, accessible, and safe activity, particularly for those who maintain a good level of fitness. “Even colleagues who are runners themselves were asking: how can this happen? You’re exercising, you’re fit. This shouldn’t happen,” Remmers explained.
These questions became the foundation of the documentary, driven not by sensationalism, but by a genuine need to understand and, crucially, to prevent similar incidents from occurring.
Not a Tearjerker, But a Call for Awareness
Throughout the production process, close communication with Jesper’s family was paramount. They were actively involved, reviewing both the rough and final cuts of the documentary. “We did everything in consultation with the family. They were able to view both the raw and edited versions,” Remmers stated.
A private screening for family, Jesper’s girlfriend Denise, friends, and colleagues revealed the sensitivity surrounding the topic. “His friends found it confronting, but also appreciated that the story was being told. And colleagues said it was made with respect,” Remmers noted.
That respect was a deliberate choice. “We didn’t want to create a tearjerker about Jesper, and that’s what the family wanted as well. The primary goal was to inform: what is it, and who is affected?”
Balancing Emotion and Journalism
Remmers navigated a delicate balance between personal connection and journalistic objectivity throughout the documentary’s creation. While driven by a professional commitment to asking questions, conducting research, and uncovering facts – including a survey of runners and organizations to gauge awareness of heatstroke – the emotional weight of the story was inescapable.
“You can switch into a journalistic mode and focus on the work, but there were moments when that wall came down. When you see something related to Jesper, we’d just be openly crying in the newsroom,” she admitted. This combination of distance and proximity intensified the project, but also provided a clear sense of purpose: to increase knowledge and prevent future tragedies.
The Risk Isn’t Limited to the Unprepared
One of the most significant insights Remmers gained was that heatstroke doesn’t exclusively affect novice runners. “It’s often well-trained runners who fall into this trap,” she emphasized. This is linked to the complex interplay between the body and the mind during exertion. “The signals of heatstroke are very similar to the feeling of pushing through intense effort. Experienced runners might think, ‘I can do this, so I’ll keep going.’”
While a less experienced runner might be more likely to stop, a seasoned athlete is accustomed to pushing through pain and fatigue. “They push on and reach a body temperature that can be fatal.” This realization is particularly unsettling for those who believe they have the most control over their bodies.
A Shift in Perspective
Working on the documentary also altered Remmers’ own perspective on sports and performance. “I have to admit, I sometimes wondered why people do this,” she said. However, she also recognized the same mechanisms within herself, drawing on her own experience as a volleyball player. “You have those thoughts of: I don’t feel well, but it’s an important match, so I’ll push through.”
This realization became particularly poignant during filming at the Amsterdam Marathon. Remmers recalled a moment when a runner visibly struggled, while the crowd cheered him on. “There’s constant cheering and applause, but the sound changed. It was a different kind of cheer. And the man almost ran into the barriers. I thought: this isn’t good.”
Before intervention was possible, the runner disappeared into the crowd. “You’ve trained for so long, so at that moment you want to keep going. But not at all costs. If the alternative is not surviving, you would make a very different choice.”
Running Safely: Knowledge is Key
These new insights have stayed with Remmers, even outside of work. When she stood along the course of the Stevensloop in Nijmegen in mid-March, she noticed her perspective had shifted. “You look at a race with different eyes because you know so much more.”
However, she stresses that the message isn’t to stop running. “The message is that running is healthy and you should continue to do it. But with more knowledge and awareness.”
“A Documentary We Never Wanted to Make”
one sentence encapsulates the significance of this project for Remmers and her colleagues: “It’s a documentary we never wanted to make.”
But it was a necessary one, given the lack of awareness surrounding the issue and the potentially devastating consequences. As the documentary demonstrates, a shared responsibility rests with runners, organizers, and spectators. Sometimes, the difference between pushing through and stopping is greater than one might think.
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