Strength training benefits people of all ages. It has a slew of research-backed perks, including improved mental health, brain health, bone density, lower blood pressure, increased lean muscle mass, decreased visceral fat, and a lower risk of Type 2 diabetes. And it turns out, you don’t need to spend hours in the gym to see results, according to recent research.
A small study published in the journal Medicine & Science in Sports & Exercise in April found that people who lifted weights for just 30 minutes, twice a week (which is in line with U.S. Federal Physical Activity Guidelines) were able to increase their muscle mass. The 42 participants (34 men, 8 women) performed nine exercises targeting all major muscle groups for eight weeks.
They were divided into two groups: one completed the exercises until they couldn’t do any more repetitions with the right form (training to failure), and the other completed the exercises with two repetitions still left in the tank (reps in reserve).
Researchers found that all of the participants had meaningful muscle growth and improvements in their strength—even though the participants had previously strength trained, and the amount they were working out during the study was lower than some of their usual routines.
“This reinforces the veracity of the claim that a lack of time should not be a barrier to regular participation in [resistance training] programs, even for resistance-trained individuals,” the study authors wrote. “Our findings therefore indicate that resistance trained individuals not only can maintain muscular gains employing low set volumes, but potentially enhance adaptations at least over relatively short training periods.”
Here’s their workout routineResearch shows that over 70% of Americans aren’t hitting the current U.S. Federal Physical Activity Guidelines, which recommend that adults do muscle-strengthening activities of moderate- to vigorous-intensity that involve all major muscle groups on two or more days a week.
During the 8-week study, the participants completed the following exercises:
Front lat pull-down
Seated cable row
Shoulder press
Chest press
Cable triceps pushdown
Supinated dumbbell biceps curl
Smith machine squats
Leg press
Leg extension
If you’re new to resistance training, start at a lower weight or body weight only. Don’t push yourself too hard and risk injury, and slowly progress over several weeks.
In addition to strength training, the federal guidelines emphasize cardiovascular activity. Adults should aim for 150 to 300 minutes of moderate-intensity physical activity per week (like brisk walking or yard work), or 75 to 150 minutes a week of vigorous-intensity aerobic physical activity (like running or shoveling snow).
https://www.msn.com/en-au/health/other/the-exact-amount-of-time-you-need-to-lift... Without Fail: Muscular Adaptations in Single-Set Resistance Training Performed to Failure or with Repetitions-in-Reserve
Introduction/Purpose
This study compared the effects of single-set resistance training performed with maximal effort (failure) versus submaximal effort on muscular adaptations.
Results
Results indicated that both FAIL and 2-RIR elicited appreciable gains in most of the assessed outcomes. Several measures of hypertrophy tended to favor FAIL, although absolute differences between conditions were generally modest.
Conclusions
These findings suggest that single-set routines can be a time-efficient strategy for promoting muscular adaptations in resistance-trained individuals, even when transitioning from higher-volume programs.
https://journals.lww.com/acsm-msse/abstract/2025/09000/without_fail__muscular_ad... Nautilus machine training back in the 1980s worked on one set to failure with strong emphasis on negative contraction (lowering) i knew some people who worked out with that they had good muscle size and definition.
There are also studies that show once you have reached failure with doing more reps and have the burn (lactic acid) anything more doesn't add to stimulate muscle growth it just slows down recovery.
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