People who love to lift typically don’t look forward to cardio day. That’s also the trend among runners and cyclists on the days they set aside for strength training. A study from the University of Utah looks into this separation of performance traits using lab mice.
Researchers observed how effectively some mice protected their territory by fighting off other mice. They also measured the running efficiency of mice using a treadmill.
Rodents that were successful fighters burned more oxygen while running compared to less successful fighters. Although there weren’t significant differences in body mass between runners and fighters, scientists theorized there might be small physiological differences.
You might have heard that stretching can have a negative impact on physical performance. Does this happen with all types of stretching, and how long does the effect last? A study published in The Journal of Sports Medicine and Physical Fitness offers insight into these questions.
Over the course of 3 days, researchers had 12 male taekwondo athletes sprint 20 meters before and after 3 types of stretching exercises: static, ballistic and proprioceptive neuromuscular facilitation (PNF). Sprint times increased after all types of stretching, and the effect lasted for 15 to 20 minutes with static and PNF techniques. Sprint times recovered after only 5 minutes with ballistic stretching.
As a general rule, you should allow at least 48 hours for each muscle group to recover from weight training. Exercising different muscles on different days is one way to work around this schedule, but a study published in the Journal of Strength and Conditioning Research suggests super sets might require a different approach.
Twenty-five physically active men performed 5 sets of 8 to 10 reps max on 4 different exercises: 2 targeting the legs and 2 for the shoulders. Some did super sets while other subjects separated these exercises. Super sets generated higher muscle activity as well as markers of muscle damage. Researchers concluded that 5 days was not enough time for complete muscle recovery.
Powered by MuscleTech
Stretching after training is a great way to jump-start the recovery process and could actually speed your muscle growth. Right after training is an ideal time because your muscles are pumped, and manually stretching helps them expand the connective tissue and fascia that surrounds the muscle. This can also improve their shape and enhance muscle separation – here are some key stretches for all your muscle groups.
Trying to guess accurate portion sizes for different foods can lead to consistent underestimating, which can make weight loss or weight management more difficult. Here are some serving size measuring tips offered by the U.S. Centers for Disease Control and Prevention.
You’ll need a full set of measuring cups or spoons, ranging in size from half a teaspoon to 2 cups. Then get a food scale that includes a tray or cup. Start practicing on dry foods. Items like peanuts and cereal. Measure out exactly what an ounce or half a Cup looks like. Don’t forget about liquids. Most glassware holds a lot more than a standard 8-ounce (1 Cup) serving.
What does a 4-ounce serving of chicken breast look like? Use the scale. The more you practice, the easier it’ll be to divide typically larger restaurant servings into the portion sizes you’ve planned into your daily diet.
The phrase ‘working up an appetite’ can apply to manual labor as well as physical exercise. Overweight people wanting to get into shape and lose weight might worry that the work they put in at the gym might increase food cravings. A study published in the journal Medicine & Science in Sports & Exercise compares the effects of steady state and interval training on obese subjects.
Researchers assigned 46 inactive obese subjects (30 women and 16 men) to 12 weeks of moderate intensity continuous training or high intensity interval training. Both groups trained 3 times a week. Feelings of appetite and hunger hormones were measured before and after the exercise intervention, and also before and after a standard breakfast. Although feelings of hunger increased with exercise, there was no difference between steady state and HIIT groups.