France also enjoyed a superb final day of competition with two victories in the Hong Kong velodrome.

Barker finished on top after a thrilling battle with American rival Sarah Hammer in the 100-lap women's points race.

The 22-year-old Olympic team pursuit champion teamed up with Hammer to gain a lap on the rest of the field midway through.

Hammer then gained a second lap to secure another 20 points only for Barker to respond in kind late on.

The Briton's sprinting points gave her a slender advantage and her final haul of 59 proved enough for gold after her rival proved too tired to contest the final sprint.

"I'm incredibly happy," she said. 

"Until the last lap it was looking like another silver, I'm so happy it was a gold."

Hammer took silver with 51 while The Netherlands' Kirsten Wild managed 35 for a distant bronze.

Two-time Olympic champion Vogel added the keirin crown to the title she had already secured this week in her favoured sprint event.

The German edged out Colombian rival Martha Bayona Pineda by just 0.0613 seconds in the six-woman final.

Nicky Degrendele of Belgium finished 0.1304 behind the winner in third.

It marked a triumphant return for Vogel in this event after finishing sixth in last year's Olympic final.

François Pervis gained a seventh world title and a fourth victory in the one kilometre time trial elsewhere today.

The Frenchman clocked 1:00.714 to snatch victory by 0.0034.

Not even thousandths of a second would split second and third as Czech Republic's Tomas Babek and another Frenchman in Quentin Lafargue shared silver after each clocking 1:01.048.

A second French victory came courtesy of Morgan Kneisky and Benjamin Thomas in the men's madison.

They accrued 45 points to finish four clear of Australian pair Cameron Meyer and Callum Scotson.

Moreno De Pauw and Kenny De Ketele of Belgium scored 32 for bronze.

France climbed to second place on the medals table after being one of three countries to claim a golden treble.

Australia finished top after also claiming five silvers and three bronze.

France also took a silver and a bronze while Russia finished third with a solitary third place in addition to their three victories.

Germany and Great Britain shared fourth place with two golds, two silvers and one bronze.