Bolton Wanderers, Barts and The London NHS Trust joint statement: "Fabrice Muamba has had a comfortable night in the intensive care unit at The London Chest Hospital, where the medical team is continuing to monitor his progress.
"Fabrice's family has asked us to thank everyone again for their thoughts and prayers and for the continued messages of support, from which they draw great strength.
"To ensure the smooth running of the hospital for all patients - as well as Fabrice's need to concentrate on his recovery - they would request that he receive no more visitors for the moment, outside of immediate family and members of Bolton Wanderers Football Club."
Chief executive Richard Scudamore said the Premier League will review their medical procedures following Fabrice Muamba's collapse on Saturday.
Speaking at the Sport Industry Breakfast club in London this morning, Scudamore said: "Incidents and events shape policy, shape developments, shape progress.
"What we will certainly be doing is looking at every aspect of what happened and if there are ways and means of improving, if there are ways and means of making it better in the future...we will do everything to make sure we reduce to the point of elimination, if we possibly can, things like that.
"There are no guarantees but we will do whatever we can to improve."
Tottenham manager Harry Redknapp is confident his players will put aside the trauma of Fabrice Muamba's cardiac arrest tomorrow when they return to White Hart Lane for the first time since seeing the Bolton midfielder collapse.
Redknapp admitted last night that Saturday was a "horrendous" experience for all of his squad but while he is keen to see Muamba make a full recovery, he is mindful his players must concentrate on the key games they have coming up against Stoke tomorrow night and Chelsea on Saturday.
"It was traumatic for everyone, but the lads were back in training yesterday morning and we have a big week coming ahead now so we have to go again now," he said.
Footballer Fabrice Muamba can now "breathe independently" but remains in a serious condition, according to his club.
The 23-year-old is spending his fourth day in intensive care at the London Chest Hospital after collapsing during an FA Cup match on Saturday.
"Fabrice Muamba remains in intensive care at the London Chest Hospital. He is continuing to show signs of improvement this evening.
"He is currently able to breathe independently without the aid of a ventilator. He has also been able to recognise family members and respond to questions appropriately.
"These are all positive signs of progress. However, his condition remains serious and our medical staff in intensive care will continue to monitor and treat him.
"His family and club would like to thank the media for continuing to respect their privacy at this time."
Footballer Fabrice Muamba is able to "breathe independently" and has "been able to recognise family members and respond to questions", according to a statement released by his club Bolton Wanderers tonight.
The 23-year-old remains in intensive care at the London Chest Hospital after collapsing during an FA Cup match against Tottenham on Saturday.
Footballer Fabrice Muamba showed "signs of improvement" today after his heart started beating without the aid of medication.Read the full story ›
Doctors treating Bolton midfielder Fabrice Muamba have said he is "showing signs of improvement" and his heart is beating without the aid of medication.
Tottenham will play their next Premier League match against Stoke on Wednesday, despite their players seeing Fabrice Muamba's cardiac arrest on Saturday. The Spurs players were left shocked by the incident but manager Harry Redknapp said the team would "pull together and carry on with our season".