9+ Best Composite Baseball Bats for Cold Weather Games


9+ Best Composite Baseball Bats for Cold Weather Games

Non-wood bats constructed from supplies like carbon fiber, fiberglass, or a mixture thereof, expertise efficiency variations in decrease temperatures. This phenomenon stems from the inherent properties of those supplies, which may turn out to be much less versatile and resilient within the chilly, probably affecting bat velocity, ball exit velocity, and the general “really feel” of the swing. As an example, a bat performing optimally at 70F would possibly exhibit decreased trampoline impact and elevated stiffness at 40F.

Understanding how temperature impacts bat efficiency is essential for gamers in search of to take care of constant hitting all through the season. Traditionally, wooden bats have been the usual, and whereas additionally affected by temperature, their response is much less dramatic than that of composite supplies. The arrival of composite bats launched a brand new variable into the sport, necessitating a deeper understanding of how these superior supplies work together with environmental components. Correct care and storage, alongside knowledgeable bat choice, can mitigate the damaging impression of chilly on composite bat efficiency.

This text will additional discover the precise results of chilly climate on varied composite bat constructions, talk about methods for optimizing efficiency in decrease temperatures, and description greatest practices for bat care throughout colder months.

1. Stiffness Enhance

Decrease temperatures considerably affect the stiffness of composite baseball bats. The resin techniques binding the composite fibers turn out to be much less pliable in chilly climate, leading to a stiffer bat barrel. This elevated rigidity impacts bat efficiency by lowering the trampoline impact upon ball contact. The “candy spot” shrinks, and the bat’s potential to flex and switch vitality effectively diminishes. Think about a state of affairs the place a participant makes use of the identical swing in each heat and chilly circumstances. In colder temperatures, the stiffer bat will switch much less vitality to the ball, resulting in a decreased exit velocity and shorter hit distance.

The impression of elevated stiffness extends past decreased efficiency. The added rigidity elevates the chance of bat cracking or breakage. The stiffer materials turns into extra brittle and vulnerable to break upon impression with a baseball, particularly in chilly climate. This potential for harm underscores the significance of correct bat care and storage in acceptable temperature circumstances. Whereas some gamers would possibly try to “heat up” a bat artificially, such practices can compromise the bat’s structural integrity and must be prevented. Gradual warming to room temperature is most popular.

Understanding the connection between temperature and stiffness is essential for optimizing composite bat efficiency and longevity. Gamers ought to modify their swing mechanics and bat choice methods to account for the results of chilly climate. Choosing a barely end-loaded bat or adjusting grip place will help compensate for the decreased trampoline impact. Moreover, correct storage and warm-up procedures can mitigate the chance of cracking and preserve bat efficiency all through the season. Recognizing and adapting to the affect of temperature on stiffness contributes considerably to constant and secure bat utilization.

2. Diminished Trampoline Impact

The “trampoline impact” refers back to the bat’s potential to flex upon impression with a baseball, storing after which releasing vitality to propel the ball ahead. Decrease temperatures diminish this impact in composite bats. As temperatures drop, the composite supplies, primarily the resin matrix binding the fibers, stiffen. This decreased flexibility means much less vitality storage and launch upon contact, resulting in decrease ball exit speeds. Think about hanging a tough floor with a stiff rod versus a versatile spring; the spring will propel an object additional resulting from its elastic properties. Chilly climate successfully reduces the “springiness” of a composite bat, diminishing the trampoline impact and impacting efficiency.

This decreased trampoline impact presents a problem for gamers accustomed to the efficiency of their bats in hotter circumstances. A batter would possibly swing with the identical pressure and method, but observe a noticeable lower in hit distance throughout colder video games. This efficiency drop will be irritating and impression recreation outcomes. As an example, a well-hit line drive in heat climate would possibly flip right into a routine fly ball in colder circumstances as a result of decreased exit velocity. Understanding this connection between temperature and the trampoline impact is crucial for adjusting batting methods and expectations.

Addressing the decreased trampoline impact requires a multifaceted strategy. Gamers can discover bats with completely different composite constructions, as some supplies retain flexibility higher within the chilly. Adjusting swing mechanics to prioritize bat management and stable contact also can mitigate the impression of decreased vitality switch. Moreover, understanding the restrictions imposed by chilly climate permits for extra life like efficiency expectations and knowledgeable decision-making throughout gameplay. Recognizing the diminished trampoline impact as a key think about cold-weather baseball gives useful insights for each gamers and coaches in search of to optimize efficiency in diverse taking part in circumstances.

3. Decrease Ball Exit Velocity

Ball exit velocity, a vital efficiency metric in baseball, is considerably influenced by bat traits and ambient temperature. Within the context of composite bats, chilly climate performs a vital position in lowering exit velocity, impacting general hitting efficiency. Understanding this relationship is crucial for gamers and coaches in search of to optimize ends in various taking part in circumstances.

  • Stiffness and Vitality Switch

    Chilly temperatures improve the stiffness of composite supplies. This decreased flexibility hinders the bat’s potential to retailer and launch vitality effectively upon impression with the ball. Consequently, much less vitality is transferred to the ball, leading to a decrease exit velocity. A bat that propels a ball at 100 mph in heat circumstances would possibly solely obtain 90 mph in colder temperatures, even with the identical swing. This discount in exit velocity straight interprets to shorter hit distances.

  • Candy Spot Diminishment

    The “candy spot” the optimum contact space on the bat barrel successfully shrinks in chilly climate resulting from elevated stiffness. Hits exterior this decreased candy spot expertise even better vitality loss, additional decreasing the ball exit velocity. Off-center hits in chilly climate will exhibit a extra pronounced drop in velocity in comparison with comparable mishits in hotter circumstances. This emphasizes the significance of exact ball contact in colder environments.

  • Influence on Hitting Outcomes

    Decrease ball exit speeds straight translate to altered hitting outcomes. Line drives turn out to be fly balls, and hard-hit floor balls lose their momentum. A hitter’s energy potential is considerably decreased, affecting offensive methods and recreation outcomes. A group accustomed to counting on extra-base hits would possibly battle to generate offense in chilly climate as a result of diminished exit velocities.

  • Mitigation Methods

    Whereas the results of chilly on ball exit velocity are plain, a number of methods can mitigate the impression. Utilizing bats with composite supplies much less vulnerable to stiffening in chilly climate can partially offset the efficiency drop. Adjusting swing mechanics to prioritize stable contact over energy can enhance exit velocity consistency. Moreover, understanding the impression of temperature permits gamers to regulate their hitting strategy, specializing in inserting the ball strategically slightly than relying solely on energy.

The connection between chilly climate and ball exit velocity underscores the significance of adapting to various taking part in circumstances. Recognizing the impression of temperature on composite bat efficiency permits gamers and coaches to make knowledgeable selections relating to tools choice, swing mechanics, and general recreation technique. By understanding and accounting for the results of chilly, groups can attempt to take care of constant offensive efficiency no matter ambient temperature.

4. Elevated Danger of Cracking

Chilly climate considerably will increase the chance of cracking in composite baseball bats. The decrease temperatures trigger the composite supplies, significantly the resin matrix, to turn out to be brittle and fewer proof against impression stresses. This elevated fragility makes the bat extra vulnerable to cracking and even shattering upon contact with a baseball. Understanding this vulnerability is essential for preserving bat longevity and guaranteeing participant security.

  • Temperature-Dependent Brittleness

    Composite supplies, in contrast to wooden, exhibit a big change in brittleness relying on temperature. As temperatures drop, the resin system holding the composite fibers collectively loses its pliability and turns into more and more inflexible. This ends in a cloth much less able to absorbing impression vitality, making it susceptible to cracking. Think about bending a plastic spoon at room temperature versus making an attempt to bend it after it has been within the freezer the chilly plastic is much extra more likely to snap. Equally, a chilly composite bat is considerably extra vulnerable to break from the impression of a baseball.

  • Influence Stress Focus

    When a baseball strikes a composite bat, the impression pressure is concentrated on the level of contact. In chilly climate, the brittle nature of the fabric prevents this pressure from being distributed successfully all through the bat’s construction. As an alternative, the localized stress turns into amplified, exceeding the fabric’s breaking level and resulting in cracks. This impact is especially pronounced in off-center hits, the place the impression pressure is concentrated over a smaller space, additional growing the chance of cracking.

  • Micro-Cracking Accumulation

    Even seemingly minor impacts in chilly climate can create microscopic cracks throughout the composite materials. Whereas these micro-cracks won’t be instantly seen, they weaken the bat’s general construction and make it extra vulnerable to catastrophic failure with subsequent use. Repeated use in chilly climate exacerbates this problem, as the buildup of micro-cracks steadily compromises the bat’s integrity. This highlights the significance of inspecting composite bats usually for any indicators of injury, particularly after use in chilly circumstances.

  • Prevention and Mitigation

    Mitigating the chance of cracking entails a number of key practices. Storing composite bats in a temperature-controlled atmosphere, ideally above freezing, helps preserve the resin’s flexibility and reduces brittleness. Avoiding hitting onerous or frozen baseballs in chilly climate considerably reduces the stress on the bat. Moreover, correct warm-up procedures earlier than use in chilly temperatures will help enhance the fabric’s resilience, though excessive measures like synthetic heating must be prevented as they’ll harm the resin. Common inspection for any indicators of injury, similar to floor cracks or uncommon sounds throughout impression, is crucial for stopping catastrophic bat failure and guaranteeing participant security.

The elevated danger of cracking in chilly climate underscores the significance of correct care and utilization of composite baseball bats. By understanding the results of temperature on the fabric’s properties and adopting acceptable preventative measures, gamers can considerably lengthen the lifespan of their bats and decrease the chance of kit failure throughout gameplay.

5. Altered Swing Weight Really feel

Chilly climate alters the swing weight really feel of composite baseball bats, impacting a participant’s swing mechanics and perceived bat management. The first issue contributing to this altered sensation is the elevated stiffness of the composite materials at decrease temperatures. This rigidity modifications the bat’s vibrational traits upon impression, resulting in a distinct sensory suggestions transmitted by way of the arms and arms of the batter. The bat might really feel heavier or much less responsive, disrupting timing and swing effectivity. Think about a batter accustomed to a selected swing weight; in colder circumstances, the identical bat would possibly really feel much less balanced or tougher to regulate, probably resulting in mishits or a decreased bat velocity.

This altered swing weight really feel has sensible implications for participant efficiency. A batter would possibly subconsciously modify their swing to compensate for the perceived change in weight, probably resulting in inconsistencies in swing mechanics and decreased bat management. For instance, a batter would possibly grip the bat tighter or shorten their swing in an try to regain management, in the end sacrificing energy and bat velocity. Moreover, the altered really feel can impression a batter’s confidence, resulting in hesitation and decreased effectiveness on the plate. Think about a batter entering into the field on a chilly day, feeling the unfamiliar stiffness of their bat; this altered sensation can introduce doubt and disrupt their regular rhythm.

Understanding the connection between chilly climate, composite bat stiffness, and altered swing weight really feel is essential for optimizing efficiency in various circumstances. Batters ought to pay attention to this phenomenon and anticipate the potential for a distinct really feel in colder temperatures. Practising with the bat in varied temperatures will help acclimate to those modifications and decrease their impression on swing mechanics. Moreover, contemplating various bat fashions or adjusting grip strategies is likely to be useful in mitigating the results of altered swing weight really feel. Recognizing this delicate but vital facet of cold-weather baseball permits gamers to make knowledgeable changes and preserve constant efficiency whatever the temperature.

6. Correct Heat-up Important

Correct warm-up procedures are essential for mitigating the damaging results of chilly climate on composite baseball bat efficiency and longevity. Chilly temperatures improve the stiffness and brittleness of composite supplies, making them extra vulnerable to cracking and lowering their efficiency traits. A correct warm-up routine helps put together the bat to be used in colder circumstances, minimizing these dangers and optimizing efficiency.

  • Temperature Gradual Enhance

    Regularly growing the bat’s temperature earlier than use is crucial. Exposing a chilly bat to sudden temperature modifications can shock the fabric, probably resulting in micro-fractures or weakening the resin system. As an alternative, permitting the bat to slowly heat as much as room temperature reduces the chance of thermal stress and prepares the fabric for impression. This may be achieved by retaining the bat indoors at room temperature for a number of hours earlier than use or storing it in a climate-controlled atmosphere.

  • Managed Swinging Workout routines

    Managed swinging workouts can additional put together the bat to be used. Beginning with gentle swings and steadily growing depth helps distribute warmth all through the bat and improve the fabric’s flexibility. Keep away from hitting onerous or frozen baseballs in the course of the warm-up course of, as these can place extreme stress on the chilly materials. Deal with managed swings to steadily acclimate the bat to game-like circumstances.

  • Materials Issues

    Completely different composite supplies reply in another way to temperature modifications. Some composite supplies are extra vulnerable to stiffening in chilly climate than others. Understanding the precise composition of the bat can inform the warm-up course of. Bats with larger fiberglass content material might require extra in depth warm-up procedures in comparison with these with the next proportion of carbon fiber. Consulting producer suggestions for particular bat fashions can present additional steering.

  • Efficiency Enhancement

    A correct warm-up not solely mitigates dangers but in addition enhances efficiency. By growing the bat’s temperature and adaptability, the trampoline impact is improved, leading to larger ball exit speeds and better hitting distance. Heat-up procedures assist the bat carry out nearer to its optimum capability, even in colder circumstances. This interprets to higher recreation efficiency and a extra constant really feel on the plate.

Correct warm-up protocols are important for maximizing each the lifespan and efficiency of composite baseball bats in chilly climate. By understanding the impression of temperature on composite supplies and implementing acceptable warm-up strategies, gamers can mitigate dangers, optimize efficiency, and make sure the longevity of their tools. This data is vital for anybody utilizing composite bats in colder environments.

7. Storage Temperature Essential

Applicable storage temperature is a vital think about sustaining the efficiency and longevity of composite baseball bats, particularly in areas experiencing chilly climate. These bats, constructed from supplies like carbon fiber and fiberglass certain by resin, are vulnerable to modifications in mechanical properties at decrease temperatures. Storing composite bats in chilly environments, significantly under freezing, can considerably impression the resin system, resulting in elevated stiffness and brittleness. This heightened rigidity reduces the bat’s potential to flex upon impression, diminishing the “trampoline impact” and decreasing ball exit speeds. Moreover, the elevated brittleness elevates the chance of cracking or fracturing upon impression with a baseball. As an example, a bat constantly saved in a freezing storage will possible exhibit considerably decreased efficiency and the next danger of injury in comparison with a bat saved at room temperature.

The sensible significance of correct storage temperature turns into evident in the course of the transition from colder off-seasons to hotter taking part in seasons. A bat saved improperly throughout winter months would possibly exhibit considerably degraded efficiency in the course of the preliminary video games of spring. The cold-induced stiffness can persist even after the ambient temperature rises, requiring an prolonged warm-up interval or probably resulting in irreversible efficiency decline. Moreover, the gathered micro-fractures ensuing from chilly storage won’t be instantly seen however can contribute to untimely bat failure throughout gameplay. This underscores the significance of constant, temperature-controlled storage all year long, not simply in the course of the lively taking part in season. Groups investing in high-quality composite bats can defend their funding and guarantee optimum efficiency by adhering to correct storage practices.

Sustaining composite bats in a temperature-controlled atmosphere, ideally between 60-80F (15-27C), safeguards the integrity of the resin system and preserves the bat’s designed efficiency traits. Avoiding temperature extremes, each cold and warm, is crucial for maximizing bat lifespan and minimizing the chance of efficiency degradation or harm. This proactive strategy to bat care ensures constant efficiency all through the season and extends the usable lifetime of the tools, representing an economical technique for gamers and groups. Understanding the essential position of storage temperature contributes considerably to maximizing the return on funding in composite bat know-how.

8. Breaking-In Interval Very important

The break-in interval for a composite baseball bat performs a vital position in its efficiency, particularly in chilly climate. This course of entails steadily conditioning the bat’s composite supplies by way of managed hitting, permitting the resin matrix to succeed in optimum flexibility and responsiveness. A correctly broken-in bat reveals improved trampoline impact and a bigger candy spot, even in decrease temperatures. Conversely, a bat missing a enough break-in interval would possibly really feel excessively stiff and unresponsive in chilly climate, additional exacerbating the damaging results of low temperatures on composite supplies. This stiffness can result in decreased ball exit speeds and an elevated danger of cracking. For instance, a brand new composite bat used straight in cold-weather video games would possibly exhibit considerably decreased efficiency in comparison with a correctly broken-in bat of the identical mannequin. The break-in course of permits the resin to succeed in its supposed flexibility, enabling the bat to carry out optimally throughout a wider temperature vary.

The sensible significance of this understanding lies in getting ready composite bats for numerous taking part in circumstances. Breaking in a bat predominantly in heat climate prepares it for optimum efficiency all through the season, together with colder video games. The preliminary flexibility achieved in the course of the break-in interval gives a efficiency buffer in opposition to the stiffening results of chilly temperatures. Moreover, a correctly executed break-in interval contributes to maximizing the bat’s lifespan. By steadily conditioning the supplies, the chance of untimely cracking or harm resulting from cold-weather brittleness is decreased. This interprets to an extended usable life for the bat and a better return on funding. As an example, skilled gamers usually break of their bats throughout spring coaching in hotter climates, guaranteeing peak efficiency all through the season, even in colder late-season video games.

In conclusion, a enough break-in interval is important for optimizing composite bat efficiency and longevity, significantly in cold-weather environments. This course of permits the bat’s supplies to attain their supposed flexibility and responsiveness, mitigating the damaging results of low temperatures. Understanding the connection between break-in interval, composite materials habits, and chilly climate permits gamers to maximise their tools’s efficiency and lifespan, contributing to constant and profitable outcomes on the sphere. Neglecting this vital facet of bat preparation can compromise efficiency and improve the chance of kit failure, particularly in difficult cold-weather circumstances.

9. Materials-Particular Responses

Completely different composite supplies exhibit various responses to chilly climate, influencing baseball bat efficiency. The first supplies utilized in composite bat building embrace carbon fiber, fiberglass, and hybrid mixtures. Every materials possesses distinct properties affecting its habits in decrease temperatures. Carbon fiber, recognized for its stiffness and power, turns into much more inflexible in chilly climate, lowering the bat’s trampoline impact and probably growing the chance of cracking. Fiberglass, whereas typically extra versatile than carbon fiber, additionally stiffens within the chilly, albeit to a lesser extent. Hybrid constructions, combining each supplies, exhibit responses depending on the precise ratio and layering of the elements. Understanding these material-specific responses is essential for knowledgeable bat choice and utilization in colder climates. As an example, a bat with the next fiberglass content material would possibly provide a barely extra versatile really feel in chilly climate in comparison with a predominantly carbon fiber bat. This nuanced understanding permits gamers to decide on bats greatest suited to their particular person swing mechanics and taking part in circumstances.

The sensible significance of those material-specific responses extends past bat choice. Correct care and upkeep protocols must be tailor-made to the bat’s composition. A bat with the next carbon fiber content material would possibly require a extra prolonged warm-up interval earlier than use in chilly climate to mitigate the chance of cracking. Conversely, a bat with the next fiberglass content material is likely to be extra tolerant of decrease temperatures however nonetheless profit from gradual warming. Recognizing these nuances permits gamers to optimize bat efficiency and longevity. Think about a state of affairs the place two gamers use completely different composite bats in the identical cold-weather recreation. The participant utilizing a bat optimized for colder circumstances, maybe with a selected carbon fiber/fiberglass mix, will possible expertise higher efficiency and a decreased danger of bat harm in comparison with the participant utilizing a bat much less suited to the atmosphere. This highlights the aggressive benefit gained by way of an understanding of material-specific responses.

In conclusion, recognizing the distinct responses of varied composite supplies to chilly climate is crucial for knowledgeable decision-making relating to bat choice, utilization, and care. This data empowers gamers to optimize efficiency, mitigate dangers, and maximize the lifespan of their tools. The interaction between materials properties and environmental circumstances underscores the significance of a scientific strategy to bat choice and upkeep, in the end contributing to participant success and tools longevity within the demanding sport of baseball.

Often Requested Questions

Addressing widespread inquiries relating to the results of chilly climate on composite baseball bat efficiency.

Query 1: How does chilly climate have an effect on the efficiency of a composite baseball bat?

Chilly temperatures scale back the pliability of the composite supplies, resulting in decreased trampoline impact, decrease ball exit speeds, and an elevated danger of cracking.

Query 2: Can a composite bat be completely broken by chilly climate?

Sure, extended publicity to freezing temperatures or vital impression whereas chilly may cause irreversible harm, similar to cracking or delamination.

Query 3: Are all composite bats equally affected by chilly climate?

No, completely different composite supplies and building strategies exhibit various responses to chilly. Some supplies retain flexibility higher than others in decrease temperatures.

Query 4: How can one mitigate the damaging results of chilly on a composite bat?

Correct warm-up procedures, acceptable storage temperatures, and deciding on bats with cold-weather efficiency in thoughts will help mitigate damaging results.

Query 5: Is it secure to make use of a composite bat in extraordinarily chilly climate?

Whereas not inherently unsafe, utilizing a composite bat in extraordinarily chilly climate considerably will increase the chance of cracking. Warning and correct preparation are important.

Query 6: What temperature is taken into account too chilly for utilizing a composite baseball bat?

Usually, temperatures under 50F (10C) warrant elevated warning. Beneath freezing, utilization must be prevented every time attainable to reduce the chance of injury.

Understanding the impression of chilly climate on composite bat efficiency is essential for maximizing each efficiency and bat lifespan. Implementing acceptable care and utilization practices will help mitigate potential points and guarantee constant efficiency in various taking part in circumstances.

The next part explores greatest practices for caring for composite baseball bats in chilly climate climates.

Finest Practices for Chilly Climate Bat Care

Sustaining optimum efficiency and longevity of composite baseball bats in chilly climate requires proactive measures. The next ideas provide steering for mitigating the damaging impacts of decrease temperatures on these specialised items of kit.

Tip 1: Retailer Bats in a Temperature-Managed Atmosphere: Keep away from storing composite bats in areas uncovered to freezing temperatures or excessive temperature fluctuations. Best storage temperature ranges between 60-80F (15-27C). Constant temperature management helps protect the resin’s integrity and prevents cold-induced brittleness.

Tip 2: Implement a Gradual Heat-up Routine: Earlier than use in chilly climate, enable the bat to steadily heat to room temperature. Keep away from fast heating strategies. Managed swinging workouts with progressively growing depth can additional put together the bat to be used.

Tip 3: Keep away from Influence with Frozen or Excessively Exhausting Baseballs: Putting onerous or frozen baseballs in chilly climate considerably will increase the chance of bat cracking. Go for softer apply baseballs throughout cold-weather coaching classes.

Tip 4: Examine Bats Frequently for Injury: Examine for any seen cracks, dents, or uncommon sounds upon impression. Even minor harm can compromise structural integrity and improve the chance of additional harm in chilly climate.

Tip 5: Think about Materials-Particular Care: Completely different composite supplies reply in another way to chilly. Seek the advice of producer suggestions for particular care directions primarily based on the bat’s composition. Bats with larger carbon fiber content material might require extra cautious dealing with in chilly climate.

Tip 6: Rotate Bat Utilization: Keep away from utilizing the identical bat completely in chilly climate. Rotating bat utilization distributes put on and tear extra evenly, probably extending the lifespan of all bats.

Tip 7: Use a Bat Sleeve for Added Safety: A thermal bat sleeve can present a further layer of insulation, serving to to take care of a extra constant temperature throughout use in chilly climate.

Adhering to those practices considerably contributes to preserving bat efficiency and lengthening lifespan. Correct care and upkeep are important investments in tools longevity and participant success.

This data gives sensible steering for navigating the challenges of cold-weather baseball and maximizing the efficiency of composite bats. The concluding part synthesizes key takeaways and reinforces the significance of knowledgeable bat care.

Conclusion

Efficiency variations in composite baseball bats resulting from chilly climate necessitate cautious consideration of a number of components. Decrease temperatures improve materials stiffness, diminishing the trampoline impact and lowering ball exit speeds. This efficiency decline, coupled with an elevated danger of cracking, underscores the significance of correct bat choice, warm-up procedures, and storage practices. Materials-specific responses to chilly additional complicate the difficulty, highlighting the necessity for knowledgeable decision-making primarily based on bat composition. Constant consideration to those components permits for optimized efficiency and extended bat lifespan, even in difficult cold-weather environments.

Sustained efficiency in baseball depends on adapting to variable circumstances. Understanding the impression of chilly climate on composite bat efficiency equips gamers and coaches with the information to make knowledgeable selections relating to tools choice, utilization, and care. This proactive strategy contributes not solely to quick efficiency good points but in addition to long-term tools integrity, maximizing the return on funding in these superior sporting instruments. Steady exploration of fabric science and efficiency optimization will additional refine greatest practices, guaranteeing peak efficiency in all taking part in circumstances.