top-ups

昨日取り上げたReader's Digest 7月号の記事 Feeding the Olympicsからの続きです。
Most cometitors eat more when they train than when they compete.
....
"Then on the competition day you eat to feel neither too hungry nor too full." Even so, he adds, "Food can have a distinct competitive effect on the day of an event. Marathon runners, for example, can only store so much carbohydrate in their muscles, so they need top-ups during the race.
"top-ups" はマラソン選手がレースの途中で補給しているエネルギーの事ですね。辞書での説明を見ます。
・Oxford English Dictionary: (British) An additional or extra amount or payment that restores something to the level that is required: they will miss out on hundreds of pounds worth of pension top-ups
・Collins Dictionary:
1. an amount added to something in order to raise it to or maintain it at a desired level ⇒ 10 treatments in a row and then a top-up every now and then
2. (British) an amount added to the level of a drink, usually bringing it to the brim of the container ⇒ Anyone ready for a top-up?, ⇒ Can I give you a top-up?
要するに追加ですね。日本人男が好んで相手のビールの注ぎ足しはまさに "top-up" です。