Study Shows 80 Minutes of Weekly Exercise Eases Postpartum Blues - Video

Exercise-only programmes help cut the severity of the 'baby blues' and the risk of major clinical depression in new mums, finds a pooled data analysis of the available evidence, published in the British Journal of Sports Medicine.

But at least 80 weekly minutes of moderate intensity exercise, such as brisk walking, water aerobics, stationary cycling, and resistance training with bands, weights, or body weight are needed to achieve the effects, the findings show.

The researchers looked for relevant studies published up to January 2024 that compared various interventions, including nothing, education, and standard care with exercise to treat depression and anxiety, 12 weeks after, and within the first 12 months of, giving birth. In all, 35 unique studies out of an initial haul of 1152, involving 4072 participants from 14 countries, were included in the systematic review.

The frequency of exercise interventions ranged from 1 to 5 days a week, lasting anything from 15 up to 90 minutes a session. They included aerobic exercise, strength training, stretching, yoga as well as combinations of these. Pooled data analysis of the study results showed that compared with no exercise, exercise-only interventions were associated with less severe symptoms of depression and anxiety after giving birth and an almost halving in the odds (45%) of developing major postpartum depression. Starting the intervention before 12 weeks had elapsed after giving birth was associated with a greater reduction in depressive symptoms than starting it later.

And the greater the exercise volume the greater was the reduction in the severity of depressive symptoms. But the minimum threshold required for achieving a moderate reduction in symptom severity was clocking up at least 80 weekly minutes of moderate intensity exercise, on at least 4 days of the week. The researchers note the considerable variability among the tools used to assess depression and anxiety outcomes in the included studies, and the fact that most of them were carried out in high income countries. Depression and anxiety can also occur together, and it’s not clear how exercise affects this combination, they add.

Reference: Deprato A, Ruchat S, Ali MU, et al, Impact of postpartum physical activity on maternal depression and anxiety: a systematic review and meta-analysis, British Journal of Sports Medicine Published Online First: 05 November 2024. doi: 10.1136/bjsports-2024-108478