HIIT training is a type of interval training but more high-intensity, as the name implies. :) It entails getting your heart rate up close to its max, then briefly resting before doing it again. HIIT is well-known for being a very time efficient way of burning calories. Here’s an example, which you would do on a treadmill. Total workout time is five minutes:

The positive trend shown here is an encouraging result in this population in relation to the possibility of increasing their ability in performing daily activities, reducing the occurrence of falls and potential femoral fractures. Further research is needed to understand how to design a vigorous exercise protocol, which may focus not only on aerobics but also on the different skills assessed by the SFT and which may include specific training sessions to enhance those particular skills, such as 8-foot up and go test. To maximize the functional/physical capacities of those over 65, a close link between high-intensity exercise and functional exercises is required. A mixed circuit training program including both kinds of the aforementioned exercises and measurable by SFT should be followed.
The second aim of this study was to describe the isokinetic muscle fatigue induced by high intensity OLDE and its recovery. Firstly, the absence of isometric KF MVC torque decrease confirms that our exercise only solicits the knee extensors and does not involve the knee flexors. Secondly, EMG RMS measured during KE MVCs shortly after exhaustion and during the recovery period was not altered by high intensity OLDE, confirming the results of a previous study [8]. Therefore, as a decrease in knee extensors force production capacity can be observed without concomitant changes in EMG signal, our data combined with the data of a previous study [8] suggest that EMG signal cannot be used to investigate dynamic exercise-induced muscle fatigue. The lack of changes in EMG signal is likely to be caused by a potentiation of the maximal evoked muscular wave (M-wave) induced by high intensity OLDE [8]. Finally, according to our hypothesis, isokinetic KE MVC torque quickly recovered and plateaued after exhaustion (within ~ 30 s at 60 and 100 deg/s, and within ~ 50 s at 140 deg/s). This quick recovery in torque production capacity is likely to be associated with recovery in both central and peripheral fatigue. This assumption is supported by one previous study in our laboratory demonstrating that not only peripheral and central fatigue, but also cortical and spinal excitability recovered shortly after exhaustion [8]. Froyd et al. [32] also demonstrated a significant recovery in skeletal muscle function within 1–2 minutes after completion of a one-leg isokinetic time trial performed at high intensity. Taking all together, these results demonstrate that to fully appreciate the extent of neuromuscular alterations induced by high intensity dynamic exercise, assessment of muscle fatigue must be performed within 30 s of cessation of the exercise.
Summary of long-term adaptations to regular aerobic and anaerobic exercise. Aerobic exercise can cause several central cardiovascular adaptations, including an increase in stroke volume (SV)[102] and maximal aerobic capacity (VO2 max),[102][103] as well as a decrease in resting heart rate (RHR).[104][105][106] Long-term adaptations to resistance training, the most common form of anaerobic exercise, include muscular hypertrophy,[107][108] an increase in the physiological cross-sectional area (PCSA) of muscle(s), and an increase in neural drive,[109][110] both of which lead to increased muscular strength.[111] Neural adaptations begin more quickly and plateau prior to the hypertrophic response.[112][113]
Bettie Page Fitness is claiming to have created the first-ever "body-positive" fitness DVD, led by mind-body fitness expert Tori Rodriguez. The goal isn't to look like Page, but to embody the pin-up star's confidence, self-acceptance and strength. Each move in the 45-minute circuit-style strength and cardio workout is based on a photo of the Queen of Pinups, who was a fitness buff well before the idea of working out became popular. The total-body workout encourages viewers to challenge themselves while respecting their bodies' limits, with moves that emphasize the core strength, balance and posture that were hallmarks of Page's physique. Modifications and tips are offered to make the workout accessible and enjoyable for all levels.

15-Minute HIIT With Maggie Binkley. If you’re looking to get your heart-rate up, but are limited on time, this 15-minute video is for you. Maggie Binkley takes you through these short workouts each day of the week (Monday through Friday), focusing on specific areas on different days, and including a few full-body routines as well. Come Saturday, you’ll be ready to cheers to your accomplishments!
Aerobic exercise induces mitochondrial biogenesis and an increased capacity for oxidative phosphorylation in the mitochondria of skeletal muscle, which is one mechanism by which aerobic exercise enhances submaximal endurance performance.[98] [92][99] These effects occur via an exercise-induced increase in the intracellular AMP:ATP ratio, thereby triggering the activation of AMP-activated protein kinase (AMPK) which subsequently phosphorylates peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), the master regulator of mitochondrial biogenesis.[92][99][100]
Ever notice how dancers have killer abs, despite never hitting the floor for crunches? There’s a reason for that — every move a dancer makes engages their abs. This quick workout with Heather Graham of BeFit walks you through the moves you need to shake your body like a dancer while getting an effective core workout, not to mention your fair share of cardio. This is a low-impact routine perfect for those just getting back into exercise.
Alicia Marie, celebrity trainer, says you can change your core with plank twist corkscrews. “Hold in low plank position, keeping your core muscles tight and your forearms flat,” she says. “Slowly rotate your hips to one side, being sure not to drop them to the floor, then rotate your hips back to center. With your core muscles still engaged, rotate to the opposite side. Alternate back and forth slowly, completing five reps on each side for a total of four sets.”
In summary, Kuhn demonstrated substantial evidence in randomized clinical trials that exercise is effective for treating individuals with RCIS, thereby supporting its use in clinical practice. However, as Kuhn indicated, detail related to which specific exercises are best to prescribe is lacking. Thus, it might be premature to label this exercise protocol as a criterion standard based on current available evidence. In addition, the multifactored nature of RCIS indicates that individuals do not present with a homogeneous list of impairments. Therefore, we believe that using the same exercise program to treat everyone who has RCIS is inappropriate. An effective exercise program is derived not only from the pathoanatomic diagnosis but also from the synthesis of factors, such as pain, impairments, and functional limitations. Furthermore, we believe follow-up examinations might be necessary to modify and progress the individual's exercise program. Development of a classification-based treatment approach using evidence-based exercises with standardized exercise dosage and progression guidelines might optimize outcomes for individuals with RCIS.

This gymnastics move is for the advanced CrossFitter. Hailing from gymnastics, the ring muscle-up is one of the hardest moves a CrossFitter can complete. HOW TO DO IT: Start with either a false grip or regular grip. For the false grip, hook your wrists into the ring. This position, while uncomfortable, shortens the lever of the arm, creating less distance for you to travel. Most CrossFitters kip this move because of its degree of difficulty, but it can be done strict as well. Swing your body back to gain momentum and thrust your hips into the air while pulling with all your upper body strength (similar to a pull-up) so that the body raises to ring height or above. Always keep the rings as close to your body as possible to have the most control and strength on the rings. Once you are at ring height, quickly push your head and chest through the rings into a dip position. Then push up out of the dip position with a kip from the legs or from strict strength. MUSCLES USED: Back, shoulders, core and triceps.
An essential move to any workout. Keep in mind that if doing a push-up on your toes is too tough, you can always start on your knees. It’s still a very effective strengthening move. HOW TO DO IT: Begin the push-up in a plank position with your hands on the ground under your shoulders and with your feet together, toes driving into the ground. Your body should be in one straight line with your core locked. Slowly lower yourself down to the ground so that your chest touches the ground, then push yourself back up to the starting position without collapsing your lower back. MUSCLES USED: Shoulders, triceps, biceps and core.
Jump up ^ Rao AK, Chou A, Bursley B, Smulofsky J, Jezequel J (January 2014). "Systematic review of the effects of exercise on activities of daily living in people with Alzheimer's disease". Am J Occup Ther. 68 (1): 50–56. doi:10.5014/ajot.2014.009035. PMC 5360200. PMID 24367955. Alzheimer’s disease (AD) is a progressive neurological disorder characterized by loss in cognitive function, abnormal behavior, and decreased ability to perform basic activities of daily living [(ADLs)] ... All studies included people with AD who completed an exercise program consisting of aerobic, strength, or balance training or any combination of the three. The length of the exercise programs varied from 12 weeks to 12 months. ... Six studies involving 446 participants tested the effect of exercise on ADL performance ... exercise had a large and significant effect on ADL performance (z = 4.07, p < .0001; average effect size = 0.80). ... These positive effects were apparent with programs ranging in length from 12 wk (Santana-Sosa et al., 2008; Teri et al., 2003) and intermediate length of 16 wk (Roach et al., 2011; Vreugdenhil et al., 2012) to 6 mo (Venturelli et al., 2011) and 12 mo (Rolland et al., 2007). Furthermore, the positive effects of a 3-mo intervention lasted 24 mo (Teri et al., 2003). ... No adverse effects of exercise on ADL performance were noted. ... The study with the largest effect size implemented a walking and aerobic program of only 30 min four times a week (Venturelli et al., 2011).
The express route to a two-piece starts here: Bikini Body: Absolution. The pair of 20-minute workouts take the burn-and-firm approach to cinching with a cardio-focused session of jumps, squats, lunges and planks, then a toning series of what a reviewer described as "new-to-me ab exercises that kick the typical crunch's booty." Get ready for the wood-chopping arabesque move, one tester jokingly warned. So sore but so sleek!

Vinylcise has been historically neglected, and probably for good reason: it's terrible, and not very effective—at least not since we've had visual media alternatives. Can you imagine trying to follow along to an audio-only workout? At any rate, these workout records first appeared in the early 1920s, and were usually accompanied by a paper foldout with exercise diagrams (see the image). The earliest of these records appear to be the set of five Wallace Reducing Records released in 1920-1922 by the Wallace Institute of Chicago and pressed by Columbia Records. These records were marketed towards women, aiming to help them "get thin to music." Other exercise records of the 1920s included Victor Records for Health Exercises, released in 1922, the Battle Creek Sanitarium Health Ladder, directed by John Harvey Kellogg and released by Columbia Records in 1923, and Walter Camp's Daily Dozen, released in 1924.
Sample characteristics are presented as mean ± standard deviation for continuous variables and proportions for categorical variables. Pearson Chi-square test and independent samples t-test were used to assess potential sex differences. For BMI and weight, a non-parametric test (Mann-Whitney U) was conducted due to the lack of normal distribution. Data from the exercise logs are presented as proportions of the total number of exercise logs. Pearson Chi-square tests were run to assess the associations between frequency, intensity, type, location and social setting of exercise with sex and training group. The results were considered statistically significant if the p-value was less than 0.05. All statistical analyses were performed with SPSS 22 (Statistical Package for Social Science, Chicago, IL, USA).

Brovold et al. [7] supposed the importance of an exercise is based on a high-intensity and continuous monitoring model because in their research a nonmonitored home-based group did not improve their physical fitness as much as the monitored group that accomplished a high-intensity aerobic exercise adjusted by means of the Borg Scale and a musical pace [25]. However, Brovold et al. [7], despite an exercise protocol with a high-intensity aerobic interval (HIA), found a small effect on SFT. This may be due to the fact that the exercise protocol used by Brovold et al. [7] did not interact favorably with the skills tested by SFT. Thus, a positive relationship among vigorous physical exercise [17] or HIA exercise [7] and the functional abilities tested by the SFT is not fully evident. On the contrary, the vigorous exercise protocol used here enhanced 5 out of 6 of the SFT and seems to be more focused than the aforementioned one. The small effect of vigorous physical exercise through the 8-foot up and go test is not fully clear and may depend on several factors: (i) a large standard deviation at T0 due to the presence of two subjects who showed a very low functional capacity; (ii) inadequacy of the exercises to improve this ability; and/or (iii) inadequate sensitivity of an 8-foot up and go test. In a recent study by Furtado et al. [15] conducted on a large number of elderly females, even though the SFT was used at baseline and after 8 months from an intervention program of multimodal exercise training (3 days per week), not all skills tested were found improved. However, according to a meta-analysis [11] that included 18 different exercise studies, even a small positive effect can be considered to be of great value in this group of individuals who are at risk of further functional decline. In conclusion, the present study shows that vigorous physical exercise in healthy elderly people provides significant improvements in the majority of the different skills assessed by the SFT.