A 15-year-old Brisbane boy is in a critical condition after becoming trapped by heavy gym equipment during a workout.

Ben Shaw is believed to have been stuck for up to 30 minutes at around 8:30am this morning after a weight fell on his neck.

Staff at the Pine Rivers PCYC administered first aid to the boy before paramedics arrived and took him to Lady Cilento Hospital in a critical condition on Tuesday evening.

He is currently on life support with his family by his side.

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A 15-year-old Brisbane boy is in a critical condition after becoming trapped by gym equipment during a workout

Ben Shaw (pictured) is believed to have been stuck for up to 30 minutes at around 8:30am this morning before receiving help

Staff at the Pine Rivers PCYC (pictured) administered first aid to the boy before paramedics arrived and took him to Lady Cilento Hospital in a critical condition on Tuesday evening

The gym where he suffered the injuries has been closed since the discovery of the teenager.

The 15-year-old's neck was reportedly pinned by heavy equipment while he was working out.

Friends of Ben say he was a regular at the gym and had been competing in junior weightlifting competitions across the state.

The 15-year-old's neck was reportedly pinned by equipment while he was working out

'We are deeply saddened by this incident and are offering support to all PCYC Pine Rivers members and staff,' PCYC Queensland chief Phil Schultz said.

'We will also offer support to family and friends of the young man involved.'

Worksafe Queensland has launched an investigation and the Pine Rivers PCYC has been closed until further notice.

Counselling has been offered to the family.