"at least once per week" is grammatically correct and is commonly used in written English. It is used to express a minimum frequency or amount of something. For example: - "I try to exercise at least once per week." - "Our team meets at least once per week to discuss project progress." - "Please water the plants at least once per week to keep them healthy." - "Students are expected to complete at least one assignment per week."
In our study of participants in a Cooperative Group clinical trial, the use of supplements was much lower at baseline (20%% used vitamin C at least once per week, 15%% used vitamin E at least once per week) and particularly lower during the course of chemotherapy (12%% used vitamin C at least once per week, 8%% used vitamin E at least once per week).
Still, only 6% of the respondents removed faeces at least once per week, which is considerably lower than has been reported from the UK, where 49% of the respondents stated that they collected faeces at least once per week [ 13].
Subjects joined a Lifeball group with opportunity to play at least once per week.
To examine social and physical environmental correlates of cycling regularly (i.e. at least once per week) among school-aged children.
According to the DfT, 10% of adults in England now cycle at least once per week.
Sixty percent of respondents reported traveling to a restaurant at least once per week, and the majority of those trips were to nearby fast food restaurants.
People aged ≥60 years who rode a motorcycle at least once per week were eligible and were invited to participate in the study.
Refuse collection usually occurs at least once per week because of the rapid decomposition of food waste.
About 82% of those check e-mail at least once per week.
Participation in a sport organization at least once per week might help prevent falls in the community-dwelling older people.
Resolve to get together with others at least once per week.
I love the desktop app, it’s always running on my Mac. Ludwig is the best English buddy, it answers my 100 queries per day and stays cool.
Cristina Valenza
Retail Lead Linguist @ Apple Inc.